About this Research Topic
Development in different industries requires improving and reforming the previous techniques of heat transfer or using modern methods. The management of heat transfer, for example in precise electronic devices, biology and biophysics, or chemical and petroleum engineering, is one of the major challenges faced by engineers and scientists. However, it is not always easy to overcome this challenge. Finite thermal conductivity, space, weight, and cost are the main factors limiting heat transfer. It is crucial to increase heat transfer, saving material or reducing costs by decreasing the heat transfer media, and controlling temperature, using heat transfer enhancement methods both active and passive. On the other hand, the degradation of performance of heat transfer systems is a fact that cannot be ignored. Many systems initially work at their optimum point, however, they gradually deviate from their optimum condition and heat transfer can decrease considerably. Fouling and sedimentation are examples of this degradation. Therefore, heat transfer can be enhanced by prediction and analysis of degradation rate by different methods, such as entropy generation analysis, statistical analysis, and so on.
Heat transfer enhancement methods include but are not limited to:
• Using extended surfaces;
• Using optimization techniques such as entropy generation minimization or the constructal theorem;
• Micro and nanoscale channels;
• Nanofluids and nanoparticles;
• Boiling and condensation;
• Using phase change material (PCM);
• Porous media.
Each of these method has its own pros and cons and it is not possible to use the same method for all problems. So, clarifying the different aspects and suitability of each method is necessary. This Research Topic will be a suitable platform to share researchers' experiences in the form of scientific articles including theoretical or analytical derivation, engineering application, model development, and/or scientific experiments are highly encouraged. Proposed sub-topics of this special issue may be, but are not limited to:
• State-of-the-art review of recent developments and predicting the future pathway in heat transfer enhancement techniques;
• Analytical or numerical methods as well as algorithm development;
• Experimental validation of heat transfer enhancement;
• Application of optimizations or forecasting techniques such as artificial neural networks, ant colony optimization technique, or so on in enhanced heat transfer problems;
• Using novel numerical methods, such as of molecular dynamics simulation or the Lattice Boltzmann method for heat transfer and fluid flow simulation;
• Simulation of multiphase flow, multi-component flow, and coupled heat and mass transfer such as boiling, evaporation, chemical reaction, condensation, combustion;
• Analysis of the effect of using non-Newtonian and/or external fields (electro, magnetic) on heat transfer enhancement;
• Multiscale simulation approach to heat and mass transfer problems and study the nanostructured materials;
• Heat transfer degradation rate estimation or prediction, statistically, thermodynamically, numerically, or experimentally.
Keywords: Heat transfer enhancement, PCM, Nanofluid, Multi-phase flow, Extended surface, Boiling, Heat pipe, Heat exchanger
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