364 / 2024-03-22 10:51:46

Simulation of flow and heat transfer in latent functionally thermal fluid based on symmetric flow properties

Latent functionally thermal fluid, Axisymmetric flows, Lattice Boltzmann

3、深地工程与能源利用 > 2、深地探测开发装备与灾害防控

The pivotal role of heat exchangers in energy and industrial production cannot be overstated, as they are instrumental in efficient heat exchange and transfer. Given its exceptional properties, the latent functionally thermal fluid (LFTF) serves as an effective heat transfer fluid in double-pipe heat exchangers. This study delves deep into the convective and heat transfer characteristics of LFTF under symmetric flow conditions. Utilizing the lattice Boltzmann method (LBM), we meticulously examined various dimensionless parameters, including the height-to-diameter ratio (HDR). Our findings reveal that higher Rayleigh and Stefan numbers significantly intensify the reactions and heat transfer processes. Notably, when the HDR is set to 0.5, the complete melting time is shortened by a remarkable 47.61% compared to an HDR of 2. This is due to the reduced standard deviation of temperature at an HDR of 0.5, resulting in a more efficient melting process. In conclusion, a comprehensive understanding of these relationships is imperative for optimizing heat transfer processes in industrial applications.