EXPERIMENTAL AND NUMERICAL INVESTIGATION OF TURBULENT AIR-CUSHION-CASCADE  

作　　者：Guo, Ting-Ting  Li, Shao-Hua  Wang, Guo-Hui  Xu, Zhong 

机构地区：[1] Xi'an Jiaotong Univ., Xi'an 710049, China [2] Northeast China Inst. of Electron., Jilin 132012, China

出　　处：《Journal of Hydrodynamics》2002年第2期41-44,共4页水动力学研究与进展B辑（英文版）

摘　　要：Experimental and numerical studies of air-cushion-cascade were conducted and described. The SIMPLE algorithm combined with the normal k-Ε turbulence model was adopted to simulate the air-phase flow. The experiment was carried out by an IFA 300 anemometer. The flow field was measured for different ratios of main-stream velocity to jet velocity, different numbers of gaps and a couple of gap widths. The contour of the air-cushion was obtained, and the numerical calculations gave a closed-form result. The results show that the air-cushion thickness would increase with the increase of the jet velocity, gap width and gap number mainly determined by the jet in the former half cascade. The possibility to achieve anti-erosion by the turbulent jet was examined and confirmed.Experimental and numerical studies of air-cushion-cascade were conducted and described. The SIMPLE algorithm combined with the normal k-Ε turbulence model was adopted to simulate the air-phase flow. The experiment was carried out by an IFA 300 anemometer. The flow field was measured for different ratios of main-stream velocity to jet velocity, different numbers of gaps and a couple of gap widths. The contour of the air-cushion was obtained, and the numerical calculations gave a closed-form result. The results show that the air-cushion thickness would increase with the increase of the jet velocity, gap width and gap number mainly determined by the jet in the former half cascade. The possibility to achieve anti-erosion by the turbulent jet was examined and confirmed.

关 键 词：ANEMOMETERS Computer simulation Computer software Erosion Flow of fluids Turbulent flow 

分 类 号：O357.5[理学—流体力学]