多孔板产生水动力空化的数值验证

María Elena TEJEDA-DEL CUETO, Diana Karla FISCAL-HERNÁNDEZ, Mariolga Reyes Cruz, María ARROYO-FLORES
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引用次数: 0

摘要

本研究分析了三个使用带中心孔的穿孔板产生直径为2mm、3mm和4mm的水动力空化的案例。制作了实验模型并进行了仪器测试,验证了穿孔板的数值模型及其相应的压降。根据ISO 5167标准,在实验装置中建立了测试点,以测量上游压力(板前一直径的距离)和下游压力(板后半直径的距离)之间的压降等变量。数值模型采用商用计算流体动力学(CFD)软件,采用标准k-epsilon湍流模型、混合模型和Rayleigh-Plesset方程。结果表明:压降数值模型在穿孔板下游产生了水动力空化;用实验数据验证了这种现象,误差值小于5%。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Numerical validation of hydrodinamic cavitation generation using perforated plates
This research shows the analysis of three case studies using perforated plates with a central orifice to generate hydrodynamic cavitation with diameters of 2 mm, 3 mm, and 4 mm. Experimental model was fabricated and instrumented to validate numerical models of the perforated plates and their corresponding pressure drop. Test points were established in the experimental setup to measure variables such as pressure drop compared between upstream pressured (distance of one diameter before plate), and downstream pressure (distance of ½ diameter after the plate), according to the ISO 5167 standard. The numerical model was developed using commercial computational fluid dynamics (CFD) software applying the standard k-epsilon turbulence model, the mixture model, and the Rayleigh-Plesset equation. Results demonstrated that numerical model of the pressure drop produced hydrodynamic cavitation downstream the perforated plates; such phenomenon was validated with experimental data by less than 5% error values.
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