论文部分内容阅读
为发掘双循环圆液力缓速器制动性能潜力,开展了不同倾斜方位弯曲叶片叶栅系统对其影响规律的研究.基于某双循环圆液力缓速器样机,对叶片倾斜方位作参数化定义,采用实验设计(DOE)方法建立不同参数下动轮与定轮单流道模型.利用三维流场仿真技术,分别针对不同参数配置下流道模型进行数值计算,分析叶片倾斜方位对液力缓速器内流场速度以及湍流动能等参量分布的影响规律,获取制动外特性随叶片倾斜方位的变化规律.结果表明:随着倾角和方位角参数变化,制动转矩均出现单峰值现象,且最优叶片倾斜方位下缓速器轮腔内油液循环流速明显加快、湍动能损失增加,制动性能得到显著提升.
In order to find out the potential of the braking performance of the double-circular hydrodynamic retarder, the influence of different sloped azimuthal curved blade cascades was studied.Based on the prototype of a double-circular circular hydrodynamic retarder, (DOE) method was used to establish a single runner model with different parameters under the condition of different parameters.The flow field model under different parameters was numerically calculated by using three-dimensional flow field simulation technology, Speed field and turbulent kinetic energy and other parametric distribution rules to obtain the variation characteristics of braking characteristics with blade tilt azimuth.The results show that with the changes of tilt and azimuth parameters, the single peak phenomenon of braking torque , And the optimum blade tilt azimuth retarder wheel cavity oil flow rate significantly accelerated, turbulent kinetic energy loss increased, the braking performance has been significantly improved.