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S. Krajnovic

Department of Applied Mechanics, Vehicle Aerodynamics Laboratory, Chalmers University of Technology, Göteborg, Sweden

doi:10.4203/ccp.104.38

S. Krajnovic, "Unsteady Simulations in Train Aerodynamics", in J. Pombo, (Editor), "Proceedings of the Second International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Stirlingshire, UK, Paper 38, 2014. doi:10.4203/ccp.104.38

Keywords: large-eddy simulation, LES, partially-averaged Navier-Stokes, PANS, URANS, DES, train aerodynamics.

Summary

This paper presents the present status of unsteady simulations in train aerodynamics. The approaches range from large-eddy simulation, hybrid RANS-LES in the form of detached-eddy simulations and partially-averaged Navier-Stokes to unsteady Reynolds-averaged Navier-Stokes. Use of a hybrid technique called partially-averaged Navier-Stokes is discussed. Applications of different techniques are illustrated with examples from predictions of flows around generic train vehicles. Numerical prediction of crosswind stability and flow control of train-like vehicles is discussed.

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Front Page Browse CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Proceedings ISSN 1759-3433 CCP: 104 PROCEEDINGS OF THE SECOND INTERNATIONAL CONFERENCE ON RAILWAY TECHNOLOGY: RESEARCH, DEVELOPMENT AND MAINTENANCE Edited by: J. Pombo Paper 38 Unsteady Simulations in Train Aerodynamics S. Krajnovic Department of Applied Mechanics, Vehicle Aerodynamics Laboratory, Chalmers University of Technology, Göteborg, Sweden doi:10.4203/ccp.104.38 purchase the full-text of this paper Full Bibliographic Reference for this paper S. Krajnovic, "Unsteady Simulations in Train Aerodynamics", in J. Pombo, (Editor), "Proceedings of the Second International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Stirlingshire, UK, Paper 38, 2014. doi:10.4203/ccp.104.38 Keywords: large-eddy simulation, LES, partially-averaged Navier-Stokes, PANS, URANS, DES, train aerodynamics. Summary This paper presents the present status of unsteady simulations in train aerodynamics. The approaches range from large-eddy simulation, hybrid RANS-LES in the form of detached-eddy simulations and partially-averaged Navier-Stokes to unsteady Reynolds-averaged Navier-Stokes. Use of a hybrid technique called partially-averaged Navier-Stokes is discussed. Applications of different techniques are illustrated with examples from predictions of flows around generic train vehicles. Numerical prediction of crosswind stability and flow control of train-like vehicles is discussed. purchase the full-text of this paper (price £20) go to the previous paper go to the next paper return to the table of contents return to the book description purchase this book (price £65 +P&P)
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