Development of an Algebraic Model of Empirical Parameterization of Near Wakes around a Vehicle
Development of an Algebraic Model of Empirical Parameterization of Near Wakes around a Vehicle
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DOI：
10.3390/fluids6020075
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发表时间：
2021-02
期刊：
影响因子：
1.9
通讯作者：
Arata Kimura;M. Asami;H. Oka;Y. Oka
中科院分区：
文献类型：
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作者：
Arata Kimura;M. Asami;H. Oka;Y. Oka
在本文中，我们描述和评估了一个已被用于诊断风流模型的代数模型。我们的数值模型是基于Röck le的风模型方法，我们打算再现在飞行器后面的近尾迹区域产生的环流涡流的定常流型。通过比较拉夫堡大学进行的车辆绕流风洞实验，对所提出的模型的实用性进行了评估。我们还比较了我们的模型和CFD模型的数值结果。所提出的模型再现了车辆后的流动形态，具有数值计算成本低等显著优点。我们预计，在考虑车辆形状时，代数模型的进一步改进将提高其在车辆周围流场数值分析中的实用性。
In this paper, we describe and evaluate an algebraic model that has been adopted in a diagnostic wind flow model. Our numerical model is based on the Röckle’s wind modelling approach and we intend to reproduce the steady-state flow patterns of recirculation vortices that are generated in the near-wake region behind a vehicle. The evaluation of the practicality of our proposed model is performed by comparing the wind tunnel experiments of the flow around a vehicle conducted by the Loughborough University. We also compare the numerical results of our model with the CFD model. The proposed model reproduces the flow patterns behind a vehicle and it has significant advantages, such as low numerical costs. We expect that further improvements in the algebraic model when considering the vehicle’s shape will improve its practicality for the numerical analysis of flow fields around a vehicle.