脈動流を用いた発熱部材の伝熱促進に対する流路寸法の影響

抄録

This study describes a heat transfer characteristic of pulsating airflow around heating obstruction mounted in a rectangular duct. Several researchers have reported the possibility of the heat transfer enhancement by pulsating flow. Our study is trying to apply pulsating flow to the heat transfer enhancement method in thermal equipment such as heat exchangers and electronic equipment. In this report, an effect of the clearance between the enclosure wall and the heating obstruction on the heat transfer of the pulsating airflow around the obstruction was investigated in the case of Re = 1044. It is found that pulsating flow can enhance heat transfer around the obstruction except in the case of extremely narrow flow passage.