摘要
针对涡轮增压器中涡轮机蜗壳散热对涡轮流动以及输出功的影响,采用Pro/E和ANSYS-ICEM软件对涡轮机内部流道分别进行实体建模和网格划分,并通过计算流体力学软件ANSYS-CFX对涡轮机进行三维流动数值模拟,获得了在不考虑和考虑涡轮热损失两种情况下的涡轮机温度、压力、速度及密度的分布情况,使涡轮的热损失对涡轮机流场的影响更加清晰。结果表明,涡轮机实际工作过程中存在的蜗壳热损失会影响涡轮机的内部流动,并且使涡轮机的压气效率减低,这将使得绝热模拟结果与实际结果存在差异。
The influence of volute heat loss for the flow and power output of turbine in turbocharger is studied, by using Pro/E and ANSYS-ICEM software for solid modeling and meshing of the inner flow channel of turbine, and using computational fluid dynamical software ANSYS - CFX for the dimensional numerical simulation of flow. The temperature, pressure, velocity and density distribution of turbine are obtained in both cases considering the heat loss and ignoring the heat loss, so that it makes the impact of heat loss on turbine flow field more clear. The results show that, the existence of volute heat loss in the turbine actual work process will impact the internal flow of turbine, and will reduce the compressor efficiency of turbine. This will make the adiabatic simulation results and actual results differ.
出处
《农业装备与车辆工程》
2014年第11期32-36,共5页
Agricultural Equipment & Vehicle Engineering
关键词
增压器
涡轮机
热损失
数值模拟
流动仿真
turbocharger
turbine
heat loss
numerical simulation
flow simulation
