TY - JOUR
TI - Numerical investigation of effect of fill ratio and inclination angle on a U-shaped elliptical gravity heat pipe thermal performance
AU - Chen Yang
AU - Chen Guofei
AU - Xu Huijie
AU - Zhou Jianqiu
JN - Thermal Science
PY - 2025
VL - 29
IS - 5
SP - 3729
EP - 3741
PT - Article
AB - As electronic devices become increasingly compact, effective thermal management is crucial for performance. This study establishes a model of a U-shaped elliptical gravity heat pipe with dual heating ends and a single cooling end. Through CFD simulations, the impacts of filling ratio and inclination angle on the thermal transfer capacity for the heat pipe were investigated. The results indicate that the evaporator surface temperature and thermal resistance of the heat pipe initially decrease and then increase with an increasing filling ratio. Within the inclination range of 10° to 90°, the evaporator surface temperature and thermal resistance gradually decrease. The optimal filling ratio is found to be 65%, and the optimal inclination angle is 90°. Furthermore, it was observed that higher heat input intensifies the effects of filling ratio and inclination angle affecting heat pipe thermal performance. These findings highlight the critical role of these parameters in optimizing heat pipe performance under varying heat inputs.
DO - 10.2298/TSCI241113023C
ER -