The influence of turbulence model and numerical technique on RANS computations is discussed in the case of turbulent boundary layer flow on a flat plate. In particular, results are presented for a centered scheme with artificial dissipation and a ENO-type scheme with the Baldwin-Lomax and Spalart-Allmaras models. First, in an a priori analysis, the truncation errors are evaluated under the assumption of parallel Couette flow, and some conclusions about mesh optimization and scheme performance are drawn. Then, the a posteriori analysis for the numerical solution of turbulent boundary, layer on a flat plate is performed. Grid Convergence Index and convergence rate analysis confirm the a priori results,
Truncation error analysis in turbulent boundary layers / A., Di Mascio; Paciorri, Renato; Favini, Bernardo. - In: JOURNAL OF FLUIDS ENGINEERING. - ISSN 0098-2202. - STAMPA. - 124:3(2002), pp. 657-663. [10.1115/1.1478564]
Truncation error analysis in turbulent boundary layers
PACIORRI, Renato;FAVINI, Bernardo
2002
Abstract
The influence of turbulence model and numerical technique on RANS computations is discussed in the case of turbulent boundary layer flow on a flat plate. In particular, results are presented for a centered scheme with artificial dissipation and a ENO-type scheme with the Baldwin-Lomax and Spalart-Allmaras models. First, in an a priori analysis, the truncation errors are evaluated under the assumption of parallel Couette flow, and some conclusions about mesh optimization and scheme performance are drawn. Then, the a posteriori analysis for the numerical solution of turbulent boundary, layer on a flat plate is performed. Grid Convergence Index and convergence rate analysis confirm the a priori results,I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
