An algebraic turbulence model
for three-dimensional viscous flows
Chima, R. V.
(NASA Lewis Research Center, Cleveland, OH, United States); Giel,
P. W. (Sverdrup Technology, Inc., Brook Park, OH.,
United States); Boyle, R. J. (NASA Lewis Research Center, Cleveland, OH, United
States)
NASA Center for AeroSpace Information (CASI)
NASA-TM-105931 , 1993
An algebraic turbulence model is proposed for use with three-dimensional Navier-Stokes analyses. It incorporates features of both
the Baldwin-Lomax and Cebeci-Smith
models. The Baldwin-Lomax model uses the maximum of a
function f(y) to determine length and velocity scales. An analysis of the
Baldwin-Lomax model shows that f(y) can have a
spurious maximum close to the wall, causing numerical problems and non-physical
results. The proposed model uses integral relations to determine delta(*) u(sub e) and delta used in the Cebeci-Smith
mode. It eliminates a constant in the Baldwin-Lomax
model and determines the two remaining constants by comparison to the Cebeci-Smith formulation. Pressure gradient effects, a new
wake model, and the implementation of these features in a three-dimensional Navier-Stokes code are also described. Results are shown
for a flat plate boundary layer, an annular turbine cascade, and endwall heat transfer in a linear turbine cascade. The heat
transfer results agree well with experimental data which shows large variations
in endwall
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Updated/Added to NTRS: 2003-05-08