孔板通道结构参数对空化效应的影响

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本站小编 Free考研考试/2024-10-07

作者:\n\t韩桂华，洪健，侯进军，李大尉，赵孟石，裴禹，姚立明\n

Authors:HAN Gui-hua,HONG Jian,HOU Jin-jun,LI Da-wei,ZHAO Meng-shi,PEI Yu,YAO Li-ming摘要:摘要:孔板制作方便、易于更换，是产生水力空化效应的主要结构形式。为了研究孔板通道结构参数对空化效应的影响，通过Fluent软件建立孔板空化装置的仿真模型，得到孔板通道截面积、孔分布方式、孔分散程度、孔板通道表面粗糙度对水力空化效果的影响规律，即，10种孔板通道参数的气体体积流率随压差的变化曲线；并以亚甲基蓝溶液的空化效应为实验表征。结论表明：相同通道截面积条件下，多通道比单通道的空化效果好；通道截面积的增加可以有效提高空化效果；孔间距相近时，孔分布方式对空化效果无明显影响；孔分布方式不变时，孔分散程度越小对流体的空化效果越好；孔板通道表面低粗糙度可以促进空化。可为孔板结构参数优化提供基础。
Abstract:The orifice was used for hydraulic cavitation with its manufacture and replacement easily.The orifice device cavitation simulation model was established under the Fluent software to study the influence between the structure parameters and the cavitation effect, such as the hole area, hole distribution, hole dispersion, and surface roughness.Then the change curves of the gas volume flow with pressure drop were gained, and the cavitation effect of the methylene blue solution was gained in an experiment.The conclusion shows that the cavitation effect of multiple channels is better than a single channel under the same hole area; the increase of the hole area can improve the cavitation effect; when the hole spacing is similar, the hole distribution mode has no obvious influence. When the distribution mode is unchanged, the smaller the degree of pore dispersion, the better the cavitation effect; the low surface roughness of hole can promote cavitation, and vice versa It is the basis of orifice cavitation device parameters optimization.

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孔板通道结构参数对空化效应的影响

本站小编 Free考研考试/2024-10-07

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