基于CFD的调节阀流场数值模拟与实验研究

Flow Field Numerical Simulation and Experimental Study of Regulating Valve Based on CFD

为了对某国产调节阀进行优化设计,利用CFD方法对其内部三维流场进行数值模拟,根据模拟结果分析了不同开度下调节阀内流场流动特性,得到了速度和压力的可视化结果,计算了不同开度下调节阀流阻系数与流量系数,绘制了调节阀流量特性曲线,最后将模拟结果与实验结果进行对比。结果表明:随着调节阀开度的增大,流量增大,流阻减小,流量系数增大。数值模拟与实验分析结果吻合程度良好,进一步验证了数值模拟的可靠性,为后续对阀芯的优化设计提供依据。

For the purpose of optimizing and designing certain domestic adjusting valve,the CFD method is utilized for the numerical simulation of internal 3D fluid field.Based on the simulation result,the flow characteristics of internal flow field for regulating valve with different opening widths is analyzed;the visual results of speed and pressure are worked out;the flow resistance coefficient and flow coefficient of regulating valve with different opening widths are calculated;the flow characteristics curve of regulating valve is drawn up,and the simulation result and experimental result are compared finally.The results show that:As the opening width of regulating valve increases,both the flow and flow coefficient increase,and the flow resistance decreases.The numerical simulation coincides with the experimental analysis result well,which further verifies the reliability of numerical simulation and provides the basis for the subsequent optimization design of the valve core.