Control of Natural Convection in a square enclosure with a Heat Source

• Main Authors: Yu-Cheng Lin, 林育成
• Other Authors: Tsan-Hui Hsu
• Format: Others
• Language: zh-TW
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/94650375451391016406

碩士 === 國立高雄應用科技大學 === 機械與精密工程研究所 === 99 === This article is to analyze the behavior of flow fields in a the enclosed cavity. Numerical simulation analysis using CFD method to simulate the confined cavity is the main topic in this study. This research investigates the natural convection caused by differential temperature difference in the enclosed cavity. The system studied is constructed with two vertical walls, with heated wall in the lift-hand side and cold in the right-hand sided, two horizontal walls, with insulation wall on the top, and the bottom wall embedded with a heat source. The fluids used to simulate in the cavity are air and water. The fluid flow and circulation phenomene inside the cavity are investigate by varying the temperature difference between the two vertical walls and the heat flux on the bottom wall. It is found the Nusselt number increaser as a half length of the bottom wall is provided with constant heat flux and a side the left vertical wall. No significant different is found for other cases else.