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Prediction Method for Water Intrusion into the Engine Air Intake Duct while Running on Flooded Road at the Early Stage of Vehicle Development

机译:车辆发育早期洪水道上洪水道上运行时的水侵入预测方法

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Vehicles are required durability in various environments all over the world. Especially water resistance on flooded roads is one of the important issues. To solve this kind of problem, a CFD technology was established in order to predict the water resistance performance of the vehicle at the early development stage. By comparison with vehicle tests on flooded roads, it is clarified the following key factors are required for accurate prediction; the vehicle velocity change, the vehicle height change and the air intake flow rate. Moreover, these three key factors should be appropriately determined from vehicle and engine specification to predict water intrusion for flooded roads at the early stage of development. In this paper, a methodology which determines appropriate analysis conditions mentioned above for flooding simulation from vehicle and engine specification is described. The methodology enables us to determine whether the vehicle provides sufficient waterproofness. Further, it is confirmed that the CFD with the methodology can successfully reproduce critical phenomena for water intrusion into the air intake duct.
机译:车辆在世界各地的各种环境中是必需的。特别是洪水道路上的耐水性是重要问题之一。为了解决这种问题,建立了CFD技术,以预测在早期发展阶段的车辆的耐水性能。通过与洪水道路上的车辆测试进行比较,阐明了准确预测所需的以下关键因素;车辆速度变化,车辆高度变化和进气流率。此外,这三个关键因素应采用车辆和发动机规范适当地确定,以预测发育早期洪水道路的水侵入。在本文中,描述了确定上述用于从车辆和发动机规范泛洪模拟的适当分析条件的方法。该方法使我们能够确定车辆是否提供足够的防水性。此外,证实具有该方法的CFD可以成功地再现临界现象以进入进气管中的水侵入。

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