ABSTRACT

In this investigation, a partitioned vertical enclosed cavity is introduced by a modified configuration in which, perforations are made on the interior horizontal flat non-conductive blades in the cavity. Then, experiments have been executed to investigate the effects of governing parameters on the thermal behavior due to the buoyancy-driven convection in the modified partitioned cavity. Side walls of the cavity have different constant temperatures, while other walls are kept unheated. The governing parameters are the Rayleigh number (7 × 10³≤ Ra≤1.45 × 10⁴), blade’s tilt angle (0° ≤ θ ≤ 150°), perforation’s diameter to blade’s width ratio (0.2 ≤ d/w ≤ 0.6) as well as blade’s width to cavity’s width ratio (0.7872 ≤ w/W ≤ 0.9367).

摘要

在这项研究中，通过改进的配置引入了一个分隔的垂直封闭腔体，其中，在腔体中的内部水平扁平非导电叶片上进行穿孔。然后，进行了实验以研究控制参数对由于改进的分区腔中的浮力驱动对流引起的热行为的影响。空腔的侧壁具有不同的恒定温度，而其他壁则保持不加热。控制参数是瑞利数 (7 × 10 ³ ≤  Ra ≤1.45 × 10 ⁴ )、叶片倾斜角 (0° ≤  θ  ≤ 150°)、穿孔直径与叶片宽度比 (0.2 ≤  d/w ≤ 0.6) 以及叶片宽度与型腔宽度之比 (0.7872 ≤  w/W  ≤ 0.9367)。