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Immersed boundary method (IBM) was developed that can solve conjugate heat transfer (CHT) including phase change to simultaneously analyze phase change material (PCM) and forced convection. The CHT was analyzed by determining the effective conductivity to satisfy the continuity of temperature and heat flux at the interface. The PCM was included in the energy equation using the fact that the liquid fraction is proportional to temperature. By applying the method developed in this study, flow, conjugate heat transfer, and melting/solidification can be considered in the unitary domain without the aid of the lattice Boltzmann method (LBM). For code verification, simulations were performed for the one-dimensional solidification of a binary mixture and battery package including the PCM. The IBM simulation results were in good agreement with the results of the analytical solution and finite element method (FEM). A hybrid cooling system with forced convection and PCM was proposed, and a simulation was performed with the code developed in this study. When forced convection is added, the temperature rise can be effectively suppressed but results in temperature non-uniformity.
International Journal of Aeronautical and Space Sciences – Springer Journals
Published: May 4, 2023
Keywords: Immersed boundary method (IBM); Conjugate heat transfer (CHT); Phase change material (PCM); Melting; Solidification
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