摘要
对SJ135增压器的涡轮蜗壳及喷嘴用Pro/E进行了流场计算区域的建模,用FIRE软件对蜗壳及喷嘴划分网格,根据计算流体力学(CFD)基本方程和K-ε双方程模型,采用有限体积法对其进行了三维可压缩粘性流场数值计算,得到了内部流动的模拟结果,通过对计算结果的分析,直观地掌握了蜗壳及喷嘴内部的流动情况,找出了蜗壳及喷嘴产生局部流动损失的部位和影响因素,为进一步改进蜗壳通道和喷嘴型线,减少流动损失提高能量转换效率提供了依据.在对双腔半周进气的涡轮蜗壳及喷嘴的流场数值计算中,喷嘴出口采用等压边界条件会对计算结果带来一定的误差.
The models in calculation zone of flow field of volute and nozzles are built with Pro/E. The meshes of volute and nozzles are generated by using Computational Fluid Dynamics （CFD） software FIRE and the 3-D compressible viscous flow field is simulated by FVM based on CFD basic equation and K-ε double-equation model. The calculation result is analyzed to figure out the flow field of volute and nozzles. The position and influential factors for partial flow loss of volute and nozzles indicate the improvement of the volute channel and nozzle outline to reduce flow loss and improve the energy conversion efficiency. Flow field of volute and nozzles of double-chamber intake at semi-circle, the calculation error resnts from the assumption of constant outlet pressure of nozzles.
出处
《山东大学学报（工学版）》
CAS
2005年第6期41-45,共5页
Journal of Shandong University（Engineering Science）
关键词
增压器
流场
数值计算
turbocharger
flow field
numerical calculation
