三元件向心涡轮液力变矩器环面流线法设计

Torus Streamline Method Design of 3-element Centripetal-turbine Hydraulic Torque Converters

对三元件向心涡轮液力变矩器的设计方法进行了研究,提出了基于环面流线的设计方法。将流体质点在液力变矩器内部的运动看作为在环面上的曲线运动并可分解为轴面分量和周向分量,推导了轴面流线方程和环面流线方程。分析了叶片对于流线的影响,给出了流线型叶片厚度函数。将叶型骨线和叶片厚度函数相结合,得到了叶片表面的计算方程。研究结果表明,三元件向心涡轮液力变矩器的轴面流线和环面流线都比较接近抛物线。

The design method of 3-element centripetal-turbine hydrodynamic torque converters was investigated. A new design method based on torus streamline was proposed. The particle movement inside the hydrodynamic torque converter was considered as the curvilinear movement on a torus surface, and could be decomposed into meridional component movement and circumferential component movement. The meridional streamline equations and torus streamline equations were derived. The blade influence on streamline was analyzed and a streamlined thickness function was put forward. The equations of blade camber line combined with the thickness function, the blade surface equation was obtained. The research result shows that either a meridional streamline or a torus streamline is an approximate parabola.