2021年9月1日 · In the present work, transient heat transfer and the melting process of n-octadecane PCM encapsulated in a novel Pear-Shaped Thermal Energy Storage (PS-TES) system with and without constraint are numerically investigated and …

2013年8月1日 · Numerical simulations are performed in order to examine the time-dependent melting, and heavily deforming processes of phase change material (PCM) subjected to local heating.

2016年6月15日 · In this study, the melting and solidification of a PCM within three various horizontal annulus configurations including two circular cylinders, one elliptical cylinder in a circular cylinder and one finned cylinder in a circular cylinder are investigated numerically in terms of the aspect ratio and the orientation of the ellipse and the number o...

2017年5月1日 · This study incorporates the buoyancy term in mathematical models to capture contour of a melted PCM and also its heat transfer capacity during the hydrogen absorption process.

2025年3月12日 · In this research, the cross-section of a semi-transparent cylindrical chamber containing phase change materials (PCM) has been investigated under the solar radiation. For this purpose, the conduction heat transfer with the volumetric absorption of solar radiation has been simulated using the Lattice Boltzmann method (LBM).

2025年3月17日 · The curves pertaining to PCM melt % and temperature vary depending on the number of components in the mesh. The figures illustrate that when the number of elements is larger (18850), the mesh independence exhibits higher melt % and PCM temperature at a given period compared to lower numbers of elements. Consequently, the melting of PCM occurs ...

However, past numerical studies have neglected natural convection heat transfer in the melted phase change material (PCM), resulting in an under prediction of the total heat transfer rate to the PCM under most circumstances.

PCMs have the benefit of their latent heat being exploited during the phase change from solid to liquid state. This paper experimentally investigates the melting of different PCMs having different melting temperatures (42, 55 and 64 °C).

2020年2月1日 · Natural convection occurs because of the warm liquid PCM rises along the hot wall while the cooler liquid in the center flows down to replace the warmer fluid. This creates an unstable fluid circulation inside the sphere, known as buoyancy-driven convection. The top part of PCM melts at a faster rate than its bottom half.

2020年4月21日 · One of the solutions to the considered problem is the usage of phase change materials (PCMs) that can essentially enhance the characteristics of the developed system. Phase change materials are characterized by high phase transition heat at a fixed temperature, and these materials have a thermal capacity higher than the typical heat storage media.