液力变矩器容量系数数值计算误差修正方法  

Error Correction Method for Capacity Factor Numerical Simulation Results of Hydrodynamic Torque Converter

作　　者：李兴泉[1] 邓兆祥[1,2] 王腾腾[1] 李英强[1] 

机构地区：[1]重庆大学机械传动国家重点实验室,重庆400030 [2]汽车噪声振动和安全技术国家重点实验室,重庆400039

出　　处：《世界科技研究与发展》2013年第1期5-7,31,共4页World Sci-Tech R&D

基　　金：重庆市科技攻关重大项目(CSTC;2009AC6002)资助

摘　　要：对液力变矩器进行三维流场数值模拟及容量系数等特性参数的计算,发现流场模拟中忽略补偿压力的影响,导致容量系数的计算误差较大。通过研究补偿压力及容量系数相对误差的变化规律,建立容量系数的误差修正公式,对计算结果进行误差修正。修正结果表明:容量系数的最大误差由12%下降到5%,提高了液力变矩器特性计算的精度。Three-dimensional flow field simulation for torque converter was studied. The experimental values of capacity factor were compared with the numerical results. And it was proved that neglecting compensative pressure was a main factor resulting in characteristic parameters errors. Changing law between compensative pressure and capacity factor errors was studied. And error modified formula was proposed accordingly to correct results of simulation. The error declined from 12% to 5% by using the modified formula： The precision of the numerical simulation was improved by this method.

关 键 词：液力变矩器 容量系数 流场数值模拟 误差修正 

分 类 号：TH137.332[机械工程—机械制造及自动化]