CAJ | 학술논문

采用计算流体动力学（computational fluid dynamics，CFD）方法对锥阀的阀腔内流场进行求解，得到不同阀芯颈部直径D值下不同阀口开度对应的流量、流量系数、阀芯阻力与稳态液动力值，并对解析结果进行了分析。结果表明：在相同阀口开度下，阀芯颈部直径D的变化对流量、流量系数几乎无影响，流量系数保持在0．86左右；阀芯的颈部直径D的变化对阀芯阻力与稳态液动力的影响也很小；阀芯阻力随着阀口开度的增大而减小；稳态液动力随着阀口开度增大而增大。
채용계산류체동역학（computational fluid dynamics，CFD）방법대추벌적벌강내류장진행구해，득도불동벌심경부직경D치하불동벌구개도대응적류량、류량계수、벌심조력여은태액동력치，병대해석결과진행료분석。결과표명：재상동벌구개도하，벌심경부직경D적변화대류량、류량계수궤호무영향，류량계수보지재0．86좌우；벌심적경부직경D적변화대벌심조력여은태액동력적영향야흔소；벌심조력수착벌구개도적증대이감소；은태액동력수착벌구개도증대이증대。
Computational Fluid Dynamics (CFD)method was adopted in this paper to analyze the inner flow of valve cavity with different cone neck diameters.The mass flow rate,flow coefficient, cone resistance and steady flow force of hydraulic poppet valve were obtained at different uncork. Based on the simulation results,it has shown that the change of valve cone neck diameter D wil not cause the change of mass flow rate when the valve opening is a constant,and the flow coeffi-cient is almost a constant around 0.86;valve cone neck diameter D has smal influence on the cone resistance and steady flow force.With the increase of valve opening,the cone resistance gets decreased,however,the steady flow force gets increased during this process.