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DES of the Flow Around a High Speed Train under the Influence of Wind Gusts

Sinisa Krajnovic (Institutionen för tillämpad mekanik, Strömningslära) ; Johan Georgii ; Hassan Hemida (Institutionen för tillämpad mekanik, Strömningslära)
7th International ERCOFTAC Symposium on “Engineering Turbulence Modelling and Measurements”, June 4-6, 2008, Limassol, Cyprus. (2008)
[Konferensbidrag, refereegranskat]

Detached eddy simulation of flow around a highspeed train exiting a tunnel and passing through a region of varying crosswind is presented. Results using two crosswind profiles with different velocity amplitudes during and after the train’s passage are compared. The flow surrounding the train after the passage through the varying crosswind velocity profile was found to return to a flow similar to that before the exit from the tunnel in case when the final crosswind velocity is zero. Thus the flow seems to forget the passage through the wind gust.

Nyckelord: DES, detached eddy simulation, train aerodynamics, vehicle aerodynamics, wind gust, crosswind stability



Denna post skapades 2008-12-15. Senast ändrad 2014-09-29.
CPL Pubid: 81557

 

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Institutioner (Chalmers)

Institutionen för tillämpad mekanik, Strömningslära

Ämnesområden

Strömningsmekanik

Chalmers infrastruktur