Data from two experiments on the development of the components of the Reynolds stress tensor after a sudden application of transverse strain are compared. Computations were based on four different turbulence models: a first-order mixing length model, a second-order two-equation eddy viscosity model, and two second-order Reynolds stress models. The second-order models do not produce dramatic improvements over the simple mixing length model. The Reynolds stress models still need development to represent the physics of shear-strained turbulence well. Finally, it is demonstrated that the assumption of a scalar eddy viscosity, often used in engineering calculations of three-dimensional boundary layers, is quite reasonable. (DePo)
Behavior of a turbulent boundary layer subjected to sudden transverse strain
Verhalten turbulenter Grenzschichten bei ploetzlicher Querverformung
AIAA-Papers ; 1-19
1978
19 Seiten, 9 Bilder, 2 Tabellen, 12 Quellen
Conference paper
English