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On Unsteady Simulations in Train Aerodynamics

Sinisa Krajnovic (Institutionen för tillämpad mekanik, Strömningslära)
Railways 2014 The Second International Conference on Railway Technology: Research, Development and Maintenance Ajaccio, Corsica, France 8-11 April 2014 (2014)
[Konferensbidrag, refereegranskat]

The paper presents the present status of unsteady simulations in train aerodynamics. The approaches range from Large-Eddy Simulation, hybrid RANS-LES in form of so called Detached-Eddy Simulations and Partially-Averaged Navier-Stokes to unsteady Reynolds-Averaged Navier-Stokes. Usage 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.

Nyckelord: LES, train aerodynamics, Partially-Averaged Navier-Stokes, hybrid RANS-LES, flow control, crosswind stability

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Denna post skapades 2014-04-03. Senast ändrad 2014-09-29.
CPL Pubid: 196243