ABSTRACT

The parametric optimization of thermal collector having hemispherical protrusion with air jet impingement is carried on effective efficiency criterion. The parameters selected for the investigation are the relative spanwise pitch (Y/Dh$Y/D_h$$Y/D_h$), relative streamwise pitch (X/Dh$X/D_h$$X/D_h$), and ratio of the relative protrusion diameter to height (dpr/epr$d_{pr}/e_{pr}$$d_{pr}/e_{pr}$). A MATLAB program is executed to collect the data, and the optimization plots and table are prepared to determine the optimized parameter. For a wide range of operating parameter, the optimized values are relative streamwise pitch of 1.304, relative spanwise pitch of 0.434, and relative protrusion diameter to protrusion height ratio of 1.5.

摘要

以有效效率准则为基础，对带有空气射流冲击的半球形突起集热器进行了参数优化。为研究选择的参数是相对展向螺距（是/DH$是/D_H$$Y/D_h$), 相对流向螺距 (X/DH$X/D_H$$X/D_h$），以及相对突出直径与高度的比率（dpr _/epr _$d_{pr}/e_{pr}$$d_{pr}/e_{pr}$）。执行 MATLAB 程序来收集数据，并准备优化图和表格以确定优化参数。对于大范围的运行参数，优化值为相对流向节距1.304、相对展向节距0.434、相对突出直径与突出高度之比1.5。