Melting in a vertical cylindrical tube: Numerical investigation and comparison with experiments

Numerical study of finned heat pipe-assisted thermal energy storage system with high temperature phase change material

“…Different values of mushy zone constant ranged from 10 3 to 10 10 were reported in previous numerical studies [47][48][49]. In the present work, A mush is assigned to a value of 2.5 Â 10 6 which shows the best consistency with previous experimental works.…”

Numerical investigation of heat transfer mechanism in a vertical shell and tube latent heat energy storage system

“…Although there are some experimental results for vertical shell-and-tube heat exchangers [21][22][23], there are limited computational studies of vertical cylindrical tube systems [24][25] and vertical cylindrical shell-and-tube systems which are commonly used in the thermal energy storage. In this study, a numerical simulation was conducted to investigate the heat transfer mechanism inside a vertical cylindrical shell-and-tube latent heat energy storage system during different charging and discharging stages.…”

“…A 2D vertical slice of the cylinder is modeled to reduce computational time. Following previous numerical studies using Fluent [9,18,25], the transient simulation with the pressure staggering option (PRESTO) scheme is used for the pressure correction equation, and a Coupled algorithm was used for pressurevelocity coupling. A second order upwind scheme was used to solve the momentum and energy equations.…”

Numerical study of melting of a phase change material (PCM) enhanced by deformation of a liquid–gas interface

“…Since there is no universal value for A mush in modelling by Enthalpy-Porosity method, different values have been used in different systems [19,26]. As clearly shown in [27], melt fraction and solid shape evolution are highly dependent on A mush , and there exists an optimum value of A mush for each system. Thus, careful determination of correct A mush for our system is necessary.…”