多孔孔板水力空化可视化与数值模拟
发布时间：2018-08-19 07:34
【摘要】：基于自行搭建的多孔孔板空化反应装置,采用高速数码摄影和长工作距离显微成像技术,对多孔孔板中心孔内和孔板末下游进行空化特性试验研究,并分析了入口压力、空化数等参数对孔板水力空化的影响。试验结果显示:随着入口压力升高,孔内空化数不断下降且开始产生空化。孔板内和孔板下游都有空化区存在,且孔内空化对下游空化区影响大。数值模拟结果显示孔内空化与试验相符合,且下游空化区的产生是由孔内空化云脱落至下游漩涡区引起的。
[Abstract]:Based on the self-built porous plate cavitation reaction device, the cavitation characteristics in the center hole of the porous plate and the downstream of the hole plate are studied by using high-speed digital photography and long working distance microscopic imaging technology, and the inlet pressure is analyzed. Effect of cavitation number and other parameters on hydraulic cavitation of orifice plate. The experimental results show that the cavitation number decreases and cavitation begins to occur with the increase of inlet pressure. The cavitation zone exists in the hole plate and the downstream of the hole plate, and the cavitation in the hole has a great influence on the downstream cavitation area. The numerical simulation results show that the cavitation in the hole is consistent with the experiment, and the formation of the downstream cavitation zone is caused by the falling off of the cavitation cloud in the hole to the vortex region downstream.
【作者单位】： 江苏大学能源与动力工程学院;江苏大学能源研究院;
【基金】：国家自然科学基金项目(51176066、51276084)
【分类号】：TV131.3
[Abstract]:Based on the self-built porous plate cavitation reaction device, the cavitation characteristics in the center hole of the porous plate and the downstream of the hole plate are studied by using high-speed digital photography and long working distance microscopic imaging technology, and the inlet pressure is analyzed. Effect of cavitation number and other parameters on hydraulic cavitation of orifice plate. The experimental results show that the cavitation number decreases and cavitation begins to occur with the increase of inlet pressure. The cavitation zone exists in the hole plate and the downstream of the hole plate, and the cavitation in the hole has a great influence on the downstream cavitation area. The numerical simulation results show that the cavitation in the hole is consistent with the experiment, and the formation of the downstream cavitation zone is caused by the falling off of the cavitation cloud in the hole to the vortex region downstream.
【作者单位】： 江苏大学能源与动力工程学院;江苏大学能源研究院;
【基金】：国家自然科学基金项目(51176066、51276084)
【分类号】：TV131.3
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1 ;孔板式抹灰和油漆机[J];今日科技;1991年06期
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3 徐明权,蔡今;小浪底枢纽泄流排沙隧洞孔板浑水阻力系数的试验研究[J];泥沙研究;1985年02期
4 丁则裕,才君眉;泄洪洞内多级孔板消能效果的试验研究[J];水力发电学报;1986年04期
5 赵慧琴;;小浪底泄洪洞孔板消能试验研究[J];人民黄河;1986年04期
6 徐福生,于明祥,刘树军;多级孔板空化与脉动壁压特性[J];水动力学研究与进展;1988年03期
7 李玉柱,周炳p，
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