Development of an Algebraic Model of Empirical Parameterization of Near Wakes around a Vehicle
Arata Kimura,
Mitsufumi Asami,
Hideyuki Oka,
Yasushi Oka
Affiliations
Arata Kimura
Maritime Risk Assessment Department, National Maritime Research Institute, National Institute of Maritime, Port and Aviation Technology, Shinkawa 6-38-1, Mitaka-shi, Tokyo 181-0004, Japan
Mitsufumi Asami
Marine Environment and Engine System Department, National Maritime Research Institute, National Institute of Maritime, Port and Aviation Technology, Shinkawa 6-38-1, Mitaka-shi, Tokyo 181-0004, Japan
Hideyuki Oka
Maritime Risk Assessment Department, National Maritime Research Institute, National Institute of Maritime, Port and Aviation Technology, Shinkawa 6-38-1, Mitaka-shi, Tokyo 181-0004, Japan
Yasushi Oka
Faculty of Environment and Information Sciences, Yokohama National University, Tokiwadai 79, Hodogaya-ku, Yokohama 240-8501, Japan
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.
