Temperature distributions of wet clutch contact during engagement and disengagement processes are investigated considering lubricant flow behaviors in the gap between the friction pad and steel separator. Frictional heat generated by wet clutch contact in repeated operational modes that simulates high thermal endurance performance of a wet clutch system is modeled. This study applies CFD analysis to the lubricant convective flows that remove most of the frictional heat with respect to groove patterns on the frictional pad surface. Based on fluid flow analysis between the friction pad gap and the steel separator that includes the effects of pattern shapes on the friction pad, frictional heat, convective cooling behaviors and temperature distributions are computed with the repeated modes of varying sliding velocities and applied loads. The cooled frictional heat is investigated considering the convective flows in the gap of friction pad and separator. Frictional temperature variations on a wet clutch surface are computed for the effects of groove pattern shapes on the friction pad, waffle, and radial-arc types for better cooling effects. It is expected that the computational results will provide design methods for higher heat resistance durability and stable frictional torque transfer and effective cooling performance in wet clutch systems.

中文翻译：

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基于摩擦垫模式的离合器接合过程中湿式离合器表面温度分析

考虑到摩擦垫和钢分离器之间间隙中的润滑剂流动行为，研究了在接合和分离过程中湿式离合器接触的温度分布。模拟了湿式离合器在重复操作模式下接触产生的摩擦热，该摩擦热模拟了湿式离合器系统的高热耐久性能。这项研究将CFD分析应用于润滑剂对流，从而消除了相对于摩擦垫表面上沟槽图案的大部分摩擦热。基于摩擦垫间隙和钢分离器之间的流体流动分析（包括图案形状对摩擦垫的影响），利用变化的滑动速度和施加载荷的重复模式，计算了摩擦热，对流冷却行为和温度分布。考虑了摩擦垫和分离器间隙中的对流，研究了冷却后的摩擦热。计算出湿式离合器表面上的摩擦温度变化，以了解凹槽图案形状对摩擦垫，华夫饼和径向电弧类型的影响，以获得更好的冷却效果。预期计算结果将为湿式离合器系统中的更高耐热性，稳定的摩擦扭矩传递和有效的冷却性能提供设计方法。