Application and comparison of SST model in numerical simulation of the axial compressors

Abstract

The shear-stress transport (SST) turbulence model is incorporated into Navier-Stokes equations to simulate a turbomachinery flowfield. A staggered finite volume method is used to make the mean flow equations and turbulence model equations strongly coupled and enhance the stability of the numerical computation. The implicit treatment of the source terms is applied to the SST model. A steady state solution is obtained using five-stage Runge-Kutta time-stepping scheme with local time stepping and residual smoothing to accelerate convergence.The wall distance d, a key parameter in the SST model, is solved by a partial differential equation. The validations of the code are conducted on rotor 37, wp11 at design and off-design conditions by comparison with measurements and the Spalart-Allmaras (SA) turbulence model. The flow within the tip is calculated with a multi-block grid.

Investigation of the Trailing Edge Modification Effect on Compressor Blade Aerodynamics Using SST k-ω Turbulence Model

“…After we switched to using the SST k-ω, the simulation results became more accurate. The mentioned issues were consistent to Simões et al [23], Yin et al [24], Boretti [25], and Sonoda et al [26], who were successful in using the SST k-ω to simulate the aerodynamics of turbomachinery applications in a steady state. Therefore, it may be concluded that the SST k-ω is a suitable turbulence model for simulating rotating turbomachinery, such as this research, as it yields credible results within the time and computer performance limitations.…”

Adaptive mesh refinement method based investigation of the interaction between shock wave, boundary layer, and tip vortex in a transonic compressor

“…shear stress transport) 0.594 Ito et al 64 2008 RANS (k-e) 0.718 Chima 65 2009 RANS (k-!) 0.872 Hah 66 2009 LES and RANS (two-equation model) 13.89 Zhang et al 67 2010 URANS/RANS (Spalart-Allmaras) 0.77 Yin et al 68 2010 RANS (k-! shear stress transport) 0.316 Ameri 69 2010 RANS (k-!)…”

Numerical study of flow in the stage of an axial compressor with different topology of computational grid

“…In article [9], the model of turbulent viscosity SST closes the Navier-Stokes equations, but there is no comparison with the results obtained when employing the model of turbulent viscosity k-ε. Paper [10] proposed using a modified model of turbulent viscosity k-w, which provides for a high accuracy of computational study into the flow in the elements of axial compressor.…”

“…Nevertheless, results of articles [4][5][6][7][8][9][10][11] reveal that in order to solve various problems on modeling the flow in the elements of compressors, it is expedient to apply various models of turbulent viscosity and the topology of a computational grid. That is why solving a particular class of problems requires preliminary setting of the numerical experiment, which means performing the test tasks.…”