Numerical Simulation Study on Heat Transfer Characteristics of Particle-Loaded Flow in Microchannels

Particle suspension is considered powerful and perspective in enhancing heat transfer, but the unclear nature of particle-loaded flow limits further understanding of particle suspension. Therefore, in this paper, orthogonal experiments and the arbitrary Lagrangian-Eulerian method were used to investigate the heat transfer characteristics of particle-loaded flow. Results indicate that when the particle is at the inlet of the microchannel, the factors arranged in important order are the Reynolds number, blockage ratio, particle initial position, specific heat capacity, and thermal conductivity. When the particle is far from the microchannel inlet, the factors arranged in important order are the Reynolds number, blockage ratio, particle initial position, thermal conductivity, and specific heat capacity. The utilization of particle suspensions holds significant promise for enhancing heat transfer, yet the intricate dynamics of single particle-loaded flow present challenges in heat transfer characteristics. Orthogonal experiments using the arbitrary Lagrangian-Eulerian method were performed to identify the key factors influencing the heat transfer performance of a particle suspension. image