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Large Eddy Simulations of Side Flow Past a Generic Model of a High-Speed Train

  • Natalia Kin
  • Ralf Deiterding
  • Claus Wagner
Conference paper
Part of the Notes on Numerical Fluid Mechanics and Multidisciplinary Design book series (NNFM, volume 132)

Abstract

Computational fluid dynamics (CFD) has been utilized to investigate straight and side flow over a simplified model of the concept high-speed Next Generation Train of the DLR. Large eddy simulation (LES) with a finite volume method for unstructured grids and a lattice Boltzmann method (LBM) were performed to compare the results. The Reynolds number of the flow was \(\mathrm {Re}=2.1\,\times \,10^5\) and the investigated yaw angle was \(30^\circ \). The flow fields and the aerodynamic forces predicted with these two different methods are compared for the validation case of the flow past a sphere and the flow around the generic train model. Both approaches yield similar force predictions and exhibit different strengths and weaknesses throughout the computational process which are discussed.

Keywords

Large Eddy Simulation Lattice Boltzmann Method Wake Region Straight Flow Structure Adaptive Mesh Refinement 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer International Publishing Switzerland 2016

Authors and Affiliations

  1. 1.German Aerospace Center (DLR)Institute for Aerodynamics and Flow TechnologyGöttingenGermany

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