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采用红外热像测试技术对肋化冲击靶板双圆孔射流冲击换热进行了实验研究,研究了多种肋化形式、流动参数和几何参数对射流冲击换热特性的影响。结果表明:由于产生更多的扰动并降低肋片对射流在壁面扩散的阻碍,间断的肋片形式比连续的肋片形式有更好的强化换热效果;60°斜向间断肋型有最佳的换热效果;随着射流Reynoldes数的增大,冲击靶板的换热效果显著提高;冲击间距对冲击靶板的换热效果有一定的影响,冲击间距为冲击孔直径2倍时换热效果较好。
Infrared thermography was used to study the impact and heat transfer of double-circular jet on the target plate. The effect of various forms of fiame, flow parameters and geometrical parameters on the jet heat transfer was studied. The results show that discontinuous rib form has better heat transfer enhancement effect than continuous rib form due to more perturbation and less influence of fins on wall diffusion. Good heat transfer effect; with the increase of jet Reynoldes number, the heat transfer effect of impact target plate significantly increased; impact spacing impact on the heat transfer target impact to a certain extent, the impact of the impact of the hole diameter of 2 times the time change Thermal effect is better.