Abstract
Due to their accelerated rate of heat transfer, nanofluids are of immense interest. This work analyzes an innovative concept of hybrid nanoemulsion with an optimized design under the chemical radiative flow and its thermophysical properties. We are able to achieve great aspects of the flow with the assistance of the sheet’s permeable texture and inclined surface. Furthermore, the effects of thermal conductivity mix convection, chemical reaction, and thermal radiations on velocity, temperature, and concentration fields are also investigated. After converting the fundamental equations to ordinary differential equations with the use of similarity transportation, the problem is then solved analytically with the HAM technique. To investigate key attributes and parameters, a hybrid nanofluid with Ag and Al2O3 nanoparticles as well as Al2O3 for conventional nanofluids with the base solvent water is taken. To illustrate the effects of chemical radiative and mix convection on the thin-film flow, numerous graphs, charts, and tables are shown. Calculations and reviews are performed for reduced friction coefficient, heat, and mass transportation. According to this study, hybrid nanofluids have a higher heat-transfer rate than nanofluids when exposed to thermal radiation and at the appropriate surface angle of inclination. Due to , the temperature increases, but velocity has the opposite effect. This investigation’s innovative findings will promote the study of condensed nanostructures and nanomaterials.
Introduction
Table 1 shows the thermophysical properties of the materials. It is common practice to utilize the power-law model when modeling the flow of fluids that have a viscosity that varies with shear. On the other hand, it is not possible to forecast the results of elasticity. Fluids of the second or third grade have the potential to produce the desired outcomes in terms of elasticity. However, in these models, the viscosity is not shear-dependent. Furthermore, they are impotent to assess the effects of reducing stress. A subcategory of fluids known as the Maxwell model, which has become more popular, can identify stress relaxation. A perfectly viscous obstruction and a strictly elastic spring can be represented, much like in the Maxwell model. Maxwell nanofluid flow simulations have drawn the attention of numerous researchers. Abro et al. (2020), Sharama et al. (2020), and Ramesh et al. (2020) have used various mathematical models for the Maxwell fluid flow. The influence of radiative heat flux on the flow of Maxwell nanofluids across a chemically reacting spiraling disc was analyzed by Ahmed et al. (2020). Hussain et al. (2020) took into consideration the mathematical analysis of a Maxwell nanofluid with hydromagnetic dissipative and radiation. Jawad et al. (2021) have analyzed the entropy impact on the flow of Maxwell fluids using stretched surfaces.
TABLE 1
| Parameter | APS (average particle size), nm | Kg | W | J |
|---|---|---|---|---|
| 25–45 | 3,970 | 40 | 765 | |
| 18–23 | 10,500 | 429 | 250 | |
| 80 wt% –20 wt% | 10–45 | 2.87 | 4.768 | 0.842 |
Thermophysical features of the nanoparticles.
The most appealing and affordable method of thermal transportation was proposed by the revolutionary advancement in science using the concept of nanoparticles. Researchers are constantly examining the thermal characteristics of nanoparticles related to engineering and manufacturing usages because they have the highest proficiency of thermal transportation and stable forceful features. The formation of nanofluids is caused by the dispersion of nanoparticles in the base solvent. Plications for nanofluids are anticipated in a variety of fields, including nuclear engineering, mechanical and cooling devices, extrusion systems, and many others. In recent years, the role of nanofluids in energy production has moved into more essential applications. When nanoparticles are adequately dissolved in the base fluid, it is expected that mass and heat transmission will improve. Nanofluids are widely used in biotechnology, medicine delivery, renewable energy, and several technical fields. Choi (1995) coordinated the basic analysis and experimental investigation of the nanofluid characteristics. The thermal measurements of a nanofluid containing micropolar material were described by Khan et al. (2020) using modified diffusion concepts. Khan et al. (2019) have depicted the Oldroyd-B nanofluid flow using the optimal Prandtl number technique. Turkyilmazoglu (2020) used the single-phase model to declare the stability of nanofluids. The impact of porous space over moving surfaces susceptible to the Jeffrey nanofluid was determined by Khan and Shehzad (2020). The dual solution prediction for the nanofluid flow subject to asymmetrical slip was observed by Nadeem et al. (2020). Some other researchers have proposed different forms of nanofluids to study the many uses of nanofluids in various aspects (Sabir et al., 2019; Umar et al., 2020; Ayub et al., 2021a; Ayub et al., 2021b; Sabir et al., 2021).
As an alternative to conventional fluids, nanofluids are renowned for their exceptional capacity to transport energy. In order to make it significantly better, the hybrid nanoliquid is being produced. When two or more types of metals are combined in such a way as to produce different chemical bonds, the resulting substances are referred to be hybrid metals. A “hybrid nanofluid” can also be created by the uniform dispersion of two very small particles into the liquid that is acting as the mother liquid. Comparing this highly developed type of solution to unitary nanofluids or any other common functional fluids, it shows promising heat transmission. The innovative uses for hybrid nanosolutions include the fabrication of aviation devices, power systems, welding, lubricants, spacecraft, and electronic cooling devices. The influence of the magnetic field in the transverse direction to the flow field is discussed by Devi and Devi (2016). Babar and Ali (2019) discussed the specific thermophysical environment, applications, setup, and inherent issues of hybrid composites. Recently, more studies about hybrid nanofluid flow through various configurations can be decoded in Acharya et al. (2020), Yaseen et al. (2022), and Joshi et al. (2022).
The transportation of liquids in thin layers is frequently seen in daily life; one illustration of this is the way raindrops move across rooftops, road surfaces, and window glass. Understanding the process of thin films is crucial since they frequently occur in nature and have numerous useful applications. Whether there are inertial forces present or absent, thin films of liquids are driven by surface or body forces. Depending on the flow pattern under consideration, the strength of these forces acting on the fluid may be increased or decreased. In situations like dropping films or spray coating, inertia is crucial, but it is sometimes disregarded when the flow Reynolds number is low, as in the flow motion over an inclined plane in a sluggish motion. Thin-film flows have drawn a great deal of interest in recent years. Photovoltaic panels, lamination, biofluid flows, hydrophilicity, and other commercial and technical applications all involve film flowing over stirring flat, vertical, and inclined planes (Liu et al., 2017). The first person to look at the case of the dropping liquid films was Nusselt (1916). Jeffrey (1925) also explored the film flow in the scenario of an inclined plane. There are a lot of research studies on film flow on diverse models, which may be found in the Refs. Wang, 1990; Qasim et al., 2016; Zhang et al., 2021; Shah et al., 2022.
The radiation impact plays an important role in almost all the design approaches. Thermal radiation plays a significant role in a variety of mechanical processes, such as missiles, nuclear power plants, spacecraft and other communications satellites, steam turbines, and the many driving mechanisms for aviation. In addition to radiation, Ghadikolaei et al. (2018) and Ali et al. (2020) focused on the thermal radioactive effects in addition to the transfer of nanofluids when studying peristaltic pressing. CuO-Ag/water micropolar hybrid nanofluid flow across a vertically positioned plate was studied by Gumber et al. (2022) with the help of heat radiation and the suction/injection mechanism.
The possibilities for higher thermal transport illustrate the knowledge of the existing literature. Recent investigations of unsteady thin-film flow impacted by advanced ablation/accretion (Wang, 1990; Qasim et al., 2016; Zhang et al., 2021; Shah et al., 2022) address conventional heat transmission modes. We focused on expanding such work to include the chemical radiative effect and the mix convectional characteristics of Maxwell hybrid nanofluid flow. The cited works mentioned aforesaid highlight that less attention is paid to the study of nanofluid flow impressions over an inclined stretched plane keeping insight of Maxwell fluid flow. Nevertheless, the flow of the hybrid nanofluid in the same context is rare. We in this exploration discussed the hybrid nanofluid flow comprising silver with aluminum oxide, nanocomposites, and thin-film flow over an inclined plane. The thermal effects of the nanocomposites are also taken into account in the presence of radiation. The composite factor of the particles plays a significant role in thermal conduction. The film width along with the applied magnetic field has been studied additionally in the graphical form by using the HAM method. The impression of varied parameters versus involved profiles is studied logically.
The following are some of the innovative aspects of this work:
• Due to the intensive use of both laboratory and computational studies, the novel heat-transfer fluid is focused on the appropriate Maxwell fluid-based Al2O3-Ag-hybrid nanofluid.
• To explore the heat-transfer phenomenon, a thin film of Maxwell hybrid nanofluid flow on an inclined extended surface using thermal conductivity models has been used.
• To find an analytical solution for heat-transfer effects in hybrid nanofluid flow with thermal radiation, chemical reaction, porosity, and mix convection present.
• The governing equations for heat, mass transport, and fluid motion are transformed into self-similar differential equations using the standard factors, and the HAM method is then used to evaluate them analytically.
• The results are represented in diagrams that correspond to various numeric values of the relevant parameters.
Chemical radiative and convectional heat exchange between the surface and the surrounding fluid is essential in many real-world applications involving the cooling or heating of surfaces. The problem is more realistic and produces better results because of its cumulative proportion.
Problem development and the governing model
Let us examine the improvement of energy and mass transformation in time-dependent thin-film flow of Maxwell fluids with hybrid and mononanoparticles. Over an extended inclined plane making an angle
with the surface, a thin film flows. The following considerations are made while modeling the transportation of mass and heat:
1 The surface over which the thin film exists is moving with velocity ; here, the operative elasticity of the velocity is toward the -axis, where “” signifies the increment of time and “” represents the elasticity.
2 The surface temperature of the extending sheet is signified as “”, and the temperatures of the slit are defined as .The range of these constraints is referred to as .
3 is the local Reynolds number dependent on .
4 h(t) represents the thickness of the film.
5 We consider pressure to be constant.
6 The nanoparticles Al2O3 and Ag are used.
7 The magnetic field in a perpendicular direction is defined as .
8.8 The flow configuration for the problem is shown in Figure 1.
FIGURE 1
The fundamental equations for boundary layers that govern flow, heat, and mass transfer have the following forms (Jawad et al., 2021; Acharya et al., 2020; Zhang et al., 2021; Shah et al., 2022; Gumber et al., 2022):
The components of velocity are represented by and act along directions, respectively; is the Maxwell relaxation time parameter (note that for the problems reduce to the case of classical heat and mass transport of Newtonian fluids); is the permeability of the porous medium; are the coefficients of linear thermal and concentration expansion, respectively; is the Stefan–Boltzmann constant; is the coefficient of mean absorption; is the diffusion coefficient of the hybrid nanofluid; and is the chemical reaction. Also, the (electrical conductivity), (dynamic viscosity), (density), (capacity of specific heat), and (thermal conductivity) are some of the hybrid nanofluid quantities that can be described in this way (Acharya et al., 2020 and Joshi et al., 2022).
Therefore, we assumed the composition of Ag into Al2O3/H2O; in the proposed investigation, a hybrid nanofluid was developed. Al2O3 nanoparticles () are first dispersed in H2O to make a Al2O3/H2O ordinary nanofluid, and then Ag nanomaterials of diverse ratios () are mixed to make a consistent hybrid nanofluid of Al2O3-Ag/H2O. We assume that throughout the study.
The physical conditions for the thin-film flow are defined as
The non-dimensional variables and coordinates that we present are as follows (Zhang et al., 2021; Shah et al., 2022):where
Eq. 1 is satisfied, while Eqs 2–4 are transformed aswhere are the unsteadiness parameter, porosity term, Prandtl number, Maxwell parameter, chemical reaction, thermal Grashof number, radiation parameter, and mass Grashof number, respectively.
The transform forms of the physical conditions are taken as
The skin friction and the local Nusselt and Sherwood numbers are defined aswhere
The transformed terms are stated as
Results and discussion
In this section, we display and discuss the results that were computed using the aforementioned technique, HAM. Additionally, as illustrated in Figures 2–17 and Tables 2,Tables 3, the performance of hybrid nanofluid and nanofluid flow , energy , and concentration distribution under the impact of fluid parameters is explored. For these purposes, numerical simulations are carried out, with . When the current findings are compared with the previous study of Wang, 1990; Qasim et al., 2016 under limiting circumstances, the validity of the current results is demonstrated. The two sets of results are shown in Tables 2 and 3, and there is considerable agreement between them. According to Table 2, the progressive variation of S is added to the surface and wall temperature gradients.
FIGURE 2
TABLE 2
| Wang (1990) | Wang (1990) | Qasim et al. (2016) | Qasim et al. (2016) | Present | Present | |
|---|---|---|---|---|---|---|
| S | ||||||
| 0.3 | 0.45312 | 0.6413 | 0.45921 | 0.64374 | 0.4594251 | 0.64365 |
| 0.5 | 0.47683 | 0.7658 | 0.47941 | 0.76832 | 0.4794732 | 0.768320 |
| 0.7 | 0.49587 | 0.8513 | 0.49926 | 0.85383 | 0.4992763 | 0.853241 |
| 0.9 | 0.51325 | 0.9924 | 0.51732 | 0.51823 | 0.517276 | 0.5172751 |
Comparison between the published work and present work for the surface and wall temperature gradients considering common factors using the regular fluid having . Note that they used small and variable values of the Prandtl number.
TABLE 3
| Qasim et al. (2016) | Qasim et al. (2016) | Present | Present | |
|---|---|---|---|---|
| 9 | 0.13743 | 0.4587 | 0.137563 | 0.458872 |
| 11 | 0.129341 | 0.44575 | 0.129432 | 0.445834 |
| 13 | 0.11832 | 0.42782 | 0.11843 | 0.427942 |
Comparison between the published work and present work for the Sherwood number considering the common factor using the regular fluid having
The characteristics of (velocity field) and (thermal distributions) in the presence of (permeability variable) are delineated by Figures 2,3 for nanofluids and hybrid nanofluids. Figure 2 shows that a depletion of distribution results from increasing values. This is realistic because a porous medium presents a resistance in the way to fluid flow. Therefore, as demonstrated in Figure 2, high values of the parameter diminish the fluid velocity. The suspensions of hybrid nanofluids are declined more quickly as compared to monofluids. Additionally, as seen in Figure 3, there is an increase in temperature distributions when the values of the parameter are improved. Figures 4,5 demonstrate the variations in (velocity field) and (thermal distributions) with respect to the (volume fractions of nanoparticles). Figure 4 shows that the velocity profile appears to decrease when the values of nanoparticles grow statistically. In terms of physics, the rise in the values of denotes an increase in the number of nanoparticles scattered in the base fluid. The results imply that the minor volume percentage helps the hybrid nanofluid. When compared to ordinary nanofluids, the hybrid suspension achieves a prominent position. According to Figure 5, the distribution improved due to an increase in . Physically, the emergence of a greater number of small components into the host liquid makes it easier for the nanoliquids to release a greater quantity of their stored energy in the form of heat. As a result, there was an increase in the effective distribution of heat. Therefore, the hybrid nanofluid achieves a higher level than the typical one. The incorporation of nanocomposites results in an intensification of the process of heat transfer. It is perfectly reasonable because the incorporation of a greater number of nanoparticles into the nanosolution makes it easier to obtain a high rate of heat transmission. Figure 6 illustrates the impact of (magnetic parameter) on the field for all cases of nanofluids and hybrid nanofluids. As is estimated to be a larger value, the velocity of nanofluids decreases. Because an increase in signifies an improvement in resistive force (the Lorentz force), this results in a reduction in the velocity of the nanofluid and hybrid nanoliquid. According to Figure 7, a higher value results in an improved field. This is due to the fact that an increase in contributes to the generation of a stronger electric field, which in turn speeds up the flow of nanofluids and hybrid nanofluids. The characteristics of the flow field for different values of and (thermal and mass buoyancy parameters) are shown in Figures 8, 9. Figure 8 illustrates the unique effects of on the resulting velocity. The of the thin-film fluid increases as rises. Actually, is the ratio of thermal buoyant forces to viscous forces. As a consequence, the strengths of thermal forces rise as the magnitude of increases. Huge quantities of the Grashof number are used to provide the buoyancy forces. Thus, as rises, the resulting momentum boundary layer’s thickness also rises. The special impact of on the fluid velocity is shown in Figure 9. As the increases, the of the hybrid thin-film fluid also increases. The is the proportionality of concentration buoyant forces to viscous forces. The intensities of solutal force increase as the magnitude of the increases. Also, when compared to ordinary nanofluids, the hybrid suspension achieves a prominent position.
FIGURE 3
FIGURE 4
FIGURE 5
FIGURE 6
FIGURE 7
FIGURE 8
FIGURE 9
The changes in the profile relative to the (radiation parameter) are shown in Figure 10 for nanofluids and hybrid nanofluids. It is considered that an elevation in factor leads the temperature to rise. Physically, the factor compares the input of heat exchange through conduction to transfer using thermal radiation. It is obvious that an increase in the radiation parameter causes the temperature to rise. Additionally, there is a positive association between the and the temperature gradient close to the surface of the plate. Hence, the hybrid nanofluid shows the leading nature as compared to the nanofluid. The effect of (unsteadiness factor) on the profile is shown in Figure 11 for nanofluids and hybrid nanofluids. The plot reveals that a gradual increase in the magnitude of causes the profile to gradually decline, improving the momentum boundary film viscosity. The hybrid suspension also holds a prominent position when compared to regular nanofluids. Figure 12 predicts the significance of the distribution on the (unsteadiness factor) for both the types of nanofluids and hybrid nanofluids. It is important to note that has an increasing impact on the temperature of the liquid film. A slight temperature improvement is shown to increase the values of in the boundary layer.
FIGURE 10
FIGURE 11
FIGURE 12
Figure 13 illustrates how the presence of changed the concentration profile for both types of nanofluids. The tendency occurs for the liquid to be pushed into empty spaces as a result of the enhancement of . As a result, the increases, as depicted in Figure 13, for both the Al2O3 and Al2O3-Ag nanosolutions. Plot Figure 14 illustrates the significance of (Schmidt number) in regard to the profile for nanofluids and hybrid nanofluids. As increases, a noticeable lowering of the distribution can be seen. According to its definition, is the ratio of the momentum diffusivity to the mass diffusivity. Therefore, more species (higher ) depreciate the solutal fields. The behavior of the dimensionless distribution for various values in (chemical reactions) is depicted in Figure 15 for the cases of nanofluids and hybrid nanofluids. In this study, , and the effects of destructive chemical reactions are investigated. The plot shows a decrease in the field as rises. Physically, high values of the parameter indicate that there are many solute molecules taking part in the reaction, which causes the field to drop. As a result, a destructive chemical reaction dramatically reduces the thickness of the solutal border layer. Also, when compared to the Al2O3 nanofluid, the Al2O3-Ag suspension achieves a prominent position. Figures 16, 17 show the variation of the skin friction coefficient for different values of and for nanofluids and hybrid nanofluids. Also, the consequences of against Nusselt number enhancement in % age are presented in Figures 18.
FIGURE 13
FIGURE 14
FIGURE 15
FIGURE 16
FIGURE 17
FIGURE 18
Conclusion
We focused on describing the chemical radiative and convectional effects on the hydrothermal characteristics of two different types of Maxwell nanoliquids, the Ag hybrid nanofluid and Al
2O
3regular nanofluid, during the entire study. Over a permeable stretched inclined surface, the desired thin-film flow has been passed. Through tables and figures, exhaustive properties of porosity, volume fraction, unsteadiness, radiation, chemical reaction, and thermal and mass buoyancy components are explained. Through a comprehensive examination, some guiding points help focus our attention on the following findings:
• Maxwell hybrid nanofluids’ thin-film flow is slowed down by increased (porosity).
• (nanoparticle volume fraction), (unsteadiness), , and (Thermal and mass buoyancy parameters) parameters highly influence the thin-film flow of Maxwell hybrid nanofluids compared to nanofluids.
• For the thermal profile, (nanoparticle volume fraction), (unsteadiness), and (porosity) have similar effects. These factors have a greater impact on hybrid nanofluids than on nanofluids.
• For the concentration profile, the thin film of the hybrid fluid is more influenced than the nanofluid by as compared to the other various parameters like
• The skin friction coefficient, Nusselt number, and Sherwood number reduce when uplifting the parameter , while it increases for , and .
Future direction
These results of thin-film flows can also be used for other models like discs and cylinders, different flow factors, and trihybrid nanofluids with the execution of numerical and analytical techniques.
Statements
Data availability statement
The raw data supporting the conclusions of this article will be made available by the authors, without undue reservation.
Author contributions
TG, modeling and solution; SM, writing draft WA, editing. ETE, Validated, MFY and KG, participated in revision and provide funding source.
Funding
The authors would like to thank the Deanship of Scientific Research at Umm Al-Qura University for supporting this work by Grant Code: (22UQU4331317DSR78).
Conflict of interest
The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.
Publisher’s note
All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations or those of the publisher, the editors, and the reviewers. Any product that may be evaluated in this article or claim that may be made by its manufacturer is not guaranteed or endorsed by the publisher.
Nomenclature
relaxation time
tensor for extra stress
thermal conductivity
heat capacitance
similarity variable
temperature terms
unstable parameter
temperature
- ,
kinematic viscosity
velocity components
density
dynamic viscosity of the hybrid nanofluid
Schmitt number
permeability coefficient
time relaxation
Prandtl number
dimensionless temperature
film thickness
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Summary
Keywords
Maxwell hybrid nanofluid, thin film, heat and mass transfer, inclined stretching sheet, MgO and TiO2
Citation
Gul T, Mukhtar S, Alghamdi W, Tag Eldin E, Yassen MF and Guedri K (2022) The radiative flow of the thin-film Maxwell hybrid nanofluids on an inclined plane in a porous space. Front. Energy Res. 10:970293. doi: 10.3389/fenrg.2022.970293
Received
15 June 2022
Accepted
01 August 2022
Published
04 October 2022
Volume
10 - 2022
Edited by
Umar Khan, Hazara University, Pakistan
Reviewed by
Basharat Ullah, Mohi-Ud-Din Islamic University, Pakistan
Muhammad Farooq, University of Engineering and Technology, Lahore, Pakistan
Zulqurnain Sabir, United Arab Emirates University, United Arab Emirates
Updates
Copyright
© 2022 Gul, Mukhtar, Alghamdi, Tag Eldin, Yassen and Guedri.
This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
*Correspondence: Elsayed Tag Eldin, Elsayed.tageldin@fue.edu.eg
This article was submitted to Process and Energy Systems Engineering, a section of the journal Frontiers in Energy Research
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