时变侧风下双层客车的流固耦合数值模拟

沈沉, 杨志刚

沈沉, 杨志刚. 时变侧风下双层客车的流固耦合数值模拟[J]. 工程力学, 2014, 31(7): 203-207. DOI: 10.6052/j.issn.1000-4750.2013.01.0066
引用本文: 沈沉, 杨志刚. 时变侧风下双层客车的流固耦合数值模拟[J]. 工程力学, 2014, 31(7): 203-207. DOI: 10.6052/j.issn.1000-4750.2013.01.0066
SHEN Chen, YANG Zhi-gang. NUMERICAL SIMULATION OF FLUID-SOLID-INTERACTIONS FOR DOUBLE-DECK COACH UNDER TIME-DEPENDENT CROSSWINDS[J]. Engineering Mechanics, 2014, 31(7): 203-207. DOI: 10.6052/j.issn.1000-4750.2013.01.0066
Citation: SHEN Chen, YANG Zhi-gang. NUMERICAL SIMULATION OF FLUID-SOLID-INTERACTIONS FOR DOUBLE-DECK COACH UNDER TIME-DEPENDENT CROSSWINDS[J]. Engineering Mechanics, 2014, 31(7): 203-207. DOI: 10.6052/j.issn.1000-4750.2013.01.0066

时变侧风下双层客车的流固耦合数值模拟

基金项目: 国家“973”重点基础研究发展计划项目(2011CB711200)
详细信息
    作者简介:

    沈沉(1988―),男,上海人,硕士生,从事空气动力学及流固耦合研究(E-mail:sc@sccax.net).

    通讯作者:

    杨志刚(1961―),男,辽宁鞍山人,教授,博士,博导,从事车辆工程及空气动力学研究(E-mail:zhigangyang@tongji.edu.cn).

NUMERICAL SIMULATION OF FLUID-SOLID-INTERACTIONS FOR DOUBLE-DECK COACH UNDER TIME-DEPENDENT CROSSWINDS

  • 摘要: 流固耦合效应会影响行驶安全性。利用任意拉格朗日-欧拉(ALE)方法对某型客车1︰1模型实施时变侧风下的流固耦合数值模拟。其中车辆使用系统六自由度动力学模型简化,并选取了三种典型的侧风工况(线性、伪阶跃、正弦)分别模拟。对于各类工况,通过耦合与非耦合计算的比较,得到流固耦合效应对气动升力和俯仰力矩影响较显著。其机理在于流固耦合效应造成的流场结构的变化。有助于量化了解流固耦合效应对各个气动力的影响,为更精细地模拟车辆行驶状态提供计算方法上的参考。
    Abstract: The fluid-solid interaction (FSI) between crosswind and moving vehicles has an impact on driving safety. An arbitrary Lagrange-Euler method is applied to the FSI numerical simulation of a 1:1 double-deck coach model. A dynamic model for six-degrees-of-freedom systems is put into use to simplify the coach model. The systems are simulated under three typical crosswind forms (linear cross-wind, pseudo-jump cross-wind, sine cross-wind) respectively. FSI effect influences the lift force and the yawing moment more notably than other components of general forces, caused by the change of a flow field structure. Through the research, how much the FSI effect influence the general forces respectively can be quantitatively known. It provides a reference to simulate the vehicle travelling status in a more precise way.
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出版历程
  • 收稿日期:  2013-01-20
  • 修回日期:  2013-09-04
  • 刊出日期:  2014-07-24

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