Abstract
This study explores the issue of micropolar fluids and heat transfer in a hybrid nanofluid through a moving thin needle with prescribed surface heat flux. Here, SWCNT and MWCNT are referred to as hybrid nanoparticles, and Engine oil and Refrigerant-134A as a working fluid. Similarity transformation is implemented to acquire the similarity equations, and then numerically solved by utilizing the shooting technique bvp4c function. Hybrid nanofluids enhance the heat transfer coefficient when their concentrations and nanoparticle volumes increase. The graphical results are made for different involved parameters such as material parameter, micro-gyration parameter, moving parameter, and index parameter. It is found that the heat transfer and friction drag are improved for hybrid nanofluid than nanofluids. It is further seen that increase in the size of the needle axial and angular velocity and temperature distribution diminishes.
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