Large eddy simulation analysis of engine steady intake flows using a mixed-time-scale subgrid-scale model

Abstract

Large eddy simulation (LES) using a mixed-time-scale (MTS) subgrid-scale (SGS) model is applied to the intake flows in simplified internal combustion engine geometry. A modified colocated grid system is employed to obtain results as precise as possible and to perform calculations in a stable way with a central difference scheme for convective terms.

The results are compared with corresponding experimental data and the Reynolds averaged Navier—Stokes (RANS) equation model results obtained using the low-Reynolds-number linear k—

In addition, it is made clear that when the QUICK scheme is used in LES for the convective terms instead of the central difference scheme, the result obtained deteriorates owing to the numerical viscosity. The importance of the discretization method in practical LES is also confirmed.

Keywords

large eddy simulation internal combustion engine intake flow secondary flow subgrid-scale model

Get full access to this article

View all access options for this article.

References

Nagaoka

Suga

Horinouchi

, ‘Validation of cubic nonlinear eddy viscosity turbulence models for engine steady intake flows.’ Trans. Jap. Soc. Mech. Engrs: Ser. B 68-689 (2002): 1586–1592

Germano

Piomelli

Moin

Cabot

W. H.

, ‘A dynamic subgrid-scale eddy viscosity model.’ Phys. Fluids, A3 7 (1991): 1760–1765

Inagaki

Kondoh

Nagano

, ‘A mixed-time-scale SGS model with fixed model-parameters for practical LES.’ J. Fluids Engng 127 (2005): 1–13

Meneveau

Lund

T. S.

Cabot

W. H.

, ‘A Lagrangian dynamic subgrid-scale model of turbulence.’ J. Fluid Mechanics 319 (1996): 353–385

Inagaki

Horinouchi

Ichinose

Nagano

, ‘Predictions of wall-pressure fluctuation in separated complex flows with improved LES and quasi-DNS.’ In Proceedings of the 3rd International Symposium on Turbulence and shear flow phenomena, Sendai, Japan

Kawazoe

, A study on intake airflow and air—fuel mixture formation in an internal combustion gasoline engine Dr Eng Thesis, Nagoya University, Japan

Zhang

Kobayashi

Taniguchi

, ‘Large eddy simulation for engine port-cylinder flow.’ Monthly J. Inst. Ind. Sci. (University of Tokyo) 51-1 (1999): 37–40

Inagaki

Abe

, ‘An improvement of prediction accuracy of large eddy simulation on colocated grids.’ Trans. Jap. Soc. Mech. Engrs: Ser. B 64-623 (1998): 1981–1988

Rhie

C. M.

Chow

W. L.

, ‘Numerical study of the turbulent flow past an airfoil with trailing edge separation.’ AIAA J. 21 (1983): 1525–1532

10.

Horiuti

, ‘A proper velocity scale for modeling subgrid-scale eddy viscosities in large eddy simulation.’ Phys. Fluids, A (5) 1 (1993): 146–157

11.

Bardina

Ferziger

J. H.

Reynolds

W. C.

, ‘Improved turbulence models based on large eddy simulation of homogenous, incompressible, turbulent flows.’ Report TF-10, Thermosciences Division, Department of Mechanical Engineeering, Stanford University, Stanford, California

12.

Morinishi

Lund

T. S.

Vasilyev

O. V.

Moin

, ‘Fully conservative higher order finite difference schemes for incompressible flow.’ J. Comput. Phys. 143 (1998): 90–124

13.

Craft

T. J.

Launder

B. E.

Suga

, ‘Prediction of turbulent transitional phenomena with a nonlinear eddy-viscosity model.’ Int. J. Heat Fluid Flow 18-1 (1997): 15–28

14.

Kenjereš

Hanjali

, ‘Tackling complex turbulent flows with transient RANS.’ Fluid Dynamics Res. 41 (2009): 012201

15.

Suga

Nagaoka

Horinouchi

, ‘Application of cubic eddy viscosity turbulence models to 3D U-bend duct flows.’ Trans. Jap. Soc. Mech. Engrs: Ser. B 68-666 (2002): 495–503

16.

Mahesh

Constantinescu

Moin

, ‘A numerical method for large-eddy simulation in complex geometries.’ J. Comput. Phys. 197 (2004): 215–240