...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Computers & Fluids >Coupled analysis of unsteady aerodynamics and vehicle motion of a road vehicle in windy conditions
【24h】

Coupled analysis of unsteady aerodynamics and vehicle motion of a road vehicle in windy conditions

机译：大风条件下道路车辆非定常空气动力学与车辆运动的耦合分析

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The two-way coupling of full-scale vehicle motion and the surrounding turbulence motion has been realized on a developed unsteady aerodynamic simulator for a road vehicle. A large-eddy simulation (LES) technique has been applied to reproduce the unsteady turbulence motion, and an unstructured finite volume method has been adopted to explain the complicated geometry of a full-scale road vehicle. Three-degree-of-freedom equations of the vehicle's dynamic motion are incorporated into the developed LES code, and the motion is numerically reproduced by coupling the arbitrary Lagrangian-Eulerian (ALE) method and Navier-Stokes equations in a non-inertial reference frame. The simulation code is implemented on a massively parallel processor to meet the demands of the large-scale, long-term aerodynamic simulations of full-scale road vehicles. As a typical application of the coupled analysis, an unsteady aerodynamics simulation of a simplified heavy-duty truck in windy conditions is demonstrated, and the effects of the unsteady aerodynamics on the truck's motion are investigated. The obtained results are compared with the results of a conventional quasi-steady analysis, and certain differences in the vehicle path and the yaw angle are identified. The effects of the transitional aerodynamics on variables related to driver's perception are significant. These results clearly indicate the importance of estimating the unsteady aerodynamic forces in a vehicle motion analysis.
机译：满量程车辆运动与周围湍流运动的双向耦合已在开发的用于公路车辆的非稳态空气动力学模拟器上实现。应用大涡模拟（LES）技术来再现非定常湍流运动，并采用非结构化有限体积方法来解释全尺寸公路车辆的复杂几何形状。将车辆动态运动的三自由度方程式合并到已开发的LES代码中，并通过在非惯性参考系中耦合任意拉格朗日-欧拉（ALE）方法和Navier-Stokes方程来数值再现运动。该仿真代码在大型并行处理器上实现，以满足大型公路车辆的大规模，长期空气动力学仿真的需求。作为耦合分析的典型应用，对简化的重型卡车在大风条件下的非定常空气动力学仿真进行了演示，并研究了非定常空气动力学对卡车运动的影响。将获得的结果与常规准稳态分析的结果进行比较，并识别出车辆路径和偏航角的某些差异。过渡空气动力学对与驾驶员感知有关的变量的影响非常明显。这些结果清楚地表明了在车辆运动分析中估计不稳定的空气动力的重要性。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号