TY - GEN
T1 - Computational simulation of heavy trucks
AU - Sreenivas, Kidambi
AU - Nichols, D. Stephen
AU - Hyams, Daniel G.
AU - Mitchell, Brent
AU - Sawyer, Shane
AU - Taylor, Lafayette K.
AU - Whitfield, David L.
PY - 2007
Y1 - 2007
N2 - Aerodynamic simulations were carried out for the Generic Conventional Model, a 1/8th scale tractor-trailer model, that was tested in the NASA Ames 7'×10' tunnel. The computed forces and pressure coefficients are compared to experiment for the zero as well as the ten degree yaw cases. DES versions of the one-equation Menter SAS and the two-equation k-ε/k-ω hybrid turbulence model are used in the simulations. Significant unsteadiness is observed in the zero degree case which prevented a symmetry plane option from being used. Overall forces as well as pressure distributions matched well for the zero degree case. For the ten degree case, the forces were in reasonable agreement while the pressure distributions indicated a need for tighter grid resolution as well as possibly advanced turbulence models.
AB - Aerodynamic simulations were carried out for the Generic Conventional Model, a 1/8th scale tractor-trailer model, that was tested in the NASA Ames 7'×10' tunnel. The computed forces and pressure coefficients are compared to experiment for the zero as well as the ten degree yaw cases. DES versions of the one-equation Menter SAS and the two-equation k-ε/k-ω hybrid turbulence model are used in the simulations. Significant unsteadiness is observed in the zero degree case which prevented a symmetry plane option from being used. Overall forces as well as pressure distributions matched well for the zero degree case. For the ten degree case, the forces were in reasonable agreement while the pressure distributions indicated a need for tighter grid resolution as well as possibly advanced turbulence models.
UR - http://www.scopus.com/inward/record.url?scp=34250815590&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:34250815590
SN - 1563478900
SN - 9781563478901
T3 - Collection of Technical Papers - 45th AIAA Aerospace Sciences Meeting
SP - 13120
EP - 13132
BT - Collection of Technical Papers - 45th AIAA Aerospace Sciences Meeting
T2 - 45th AIAA Aerospace Sciences Meeting 2007
Y2 - 8 January 2007 through 11 January 2007
ER -