Fluid flow characteristics of single inclined circular jet impingement for ultra-fast cooling
来源期刊：中南大学学报(英文版)2013年第11期
论文作者：WANG Bing-xing(王丙兴) XIE Qian(谢谦) WANG Zhao-dong(王昭东) WANG Guo-dong(王国栋)
文章页码：2960 - 2966
Key words：hot plate; ultra-fast cooling; inclined circular jet; impact pressure; fluid flow velocity
Abstract: The fluid flow characteristics of the single bunch inclined jet impingement were investigated with different jet flow velocities, nozzle diameters, jet angles and jet-to-target distances for ultra-fast cooling technology. The results show that the peak pressure varying significantly from nearly 0.5 to above 13.4 kPa locates at the stagnation point with different jet diameters, and the radius of impact pressure affected zone is small promoted from 46 to 81 mm in transverse direction, and 50 to 91 mm in longitude direction when the jet flow velocity changes from 5 to 20 m/s. However, the fluid flow velocity is relatively smaller near the stagnation point, and increases gradually along the radius outwards, then declines. There is an obvious anisotropic characteristic that the flow velocity component along the jet direction is about twice of the contrary one where the jet anlge is 60°, jet diameter is 5 mm, jet length is 8 mm and jet height is 50 mm.
WANG Bing-xing(王丙兴), XIE Qian(谢谦), WANG Zhao-dong(王昭东), WANG Guo-dong(王国栋)
(State Key Laboratory of Rolling and Automation (Northeastern University), Shenyang 110819, China)
Abstract:The fluid flow characteristics of the single bunch inclined jet impingement were investigated with different jet flow velocities, nozzle diameters, jet angles and jet-to-target distances for ultra-fast cooling technology. The results show that the peak pressure varying significantly from nearly 0.5 to above 13.4 kPa locates at the stagnation point with different jet diameters, and the radius of impact pressure affected zone is small promoted from 46 to 81 mm in transverse direction, and 50 to 91 mm in longitude direction when the jet flow velocity changes from 5 to 20 m/s. However, the fluid flow velocity is relatively smaller near the stagnation point, and increases gradually along the radius outwards, then declines. There is an obvious anisotropic characteristic that the flow velocity component along the jet direction is about twice of the contrary one where the jet anlge is 60°, jet diameter is 5 mm, jet length is 8 mm and jet height is 50 mm.
Key words:hot plate; ultra-fast cooling; inclined circular jet; impact pressure; fluid flow velocity
