多孔孔板水力空化可視化與數(shù)值模擬
發(fā)布時間:2018-08-19 07:34
【摘要】:基于自行搭建的多孔孔板空化反應裝置,采用高速數(shù)碼攝影和長工作距離顯微成像技術,對多孔孔板中心孔內(nèi)和孔板末下游進行空化特性試驗研究,并分析了入口壓力、空化數(shù)等參數(shù)對孔板水力空化的影響。試驗結果顯示:隨著入口壓力升高,孔內(nèi)空化數(shù)不斷下降且開始產(chǎn)生空化?装鍍(nèi)和孔板下游都有空化區(qū)存在,且孔內(nèi)空化對下游空化區(qū)影響大。數(shù)值模擬結果顯示孔內(nèi)空化與試驗相符合,且下游空化區(qū)的產(chǎn)生是由孔內(nèi)空化云脫落至下游漩渦區(qū)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.
【作者單位】: 江蘇大學能源與動力工程學院;江蘇大學能源研究院;
【基金】:國家自然科學基金項目(51176066、51276084)
【分類號】: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.
【作者單位】: 江蘇大學能源與動力工程學院;江蘇大學能源研究院;
【基金】:國家自然科學基金項目(51176066、51276084)
【分類號】:TV131.3
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