Implementation of the Spalart–Allmaras Turbulence Model in a Finite-Volume Gas-Dynamic Solver

• Published in: Journal of applied mechanics and technical physics Vol. 66; no. 1; pp. 65 - 79
• Main Authors: Shoev, G. V., Shershnev, A. A., Polevshchikov, D. P., Shkredov, T. Yu, Kashkovsky, A. V.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01.02.2025; Springer Nature B.V
• Subjects: Applications of Mathematics; Channel flow; Classical and Continuum Physics; Classical Mechanics; Finite volume method; Flat plates; Flow velocity; Fluid- and Aerodynamics; Heat conductivity; Kinematics; Mathematical analysis; Mathematical Modeling and Industrial Mathematics; Mechanical Engineering; Physics; Physics and Astronomy; Simulation; Spalart-Allmaras turbulence model; Turbulence models; Viscosity; Spalart–Allmaras model; turbulence; computational fluid dynamics; verification
• ISSN: 0021-8944; 1573-8620
• DOI: 10.1134/S0021894425010146

A numerical finite-volume method of solving averaged Navier–Stokes equations closed by a one-parameter Spalart–Allmaras turbulence model is discussed. The proposed method is implemented within the framework of the HyCFS numerical code and is verified through comparisons of the HyCFS numerical solutions with those predicted by the CFL3D and FUN3D numerical codes. Three verification cases are considered: flow past a flat plate, bump-in-channel flow, and coflowing jet. It is shown that the numerical solutions obtained are in good agreement with each other. The numerical data on the flow velocity in the mixing layer are compared with experimental results.