Assessment of the low-dissipation monotonicity-preserving scheme in a series of DNS of shock-wave/turbulent boundary layer interactions

Fang, Jian; Yao, Yufeng; Lu, Lipeng

Abstract

The seventh-order low-dissipation monotonicity-preserving scheme developed by Fang et al. (Journal of Scientific Computing, 2013, 56:67-95) was assessed in direct numerical simulations (DNS) of isotropic turbulence and channel flow. The influence of numerical dissipation is investigated by using MP7-LD scheme with different levels of bandwidth dissipation. It is found that, small-scale turbulence fluctuations can be suppressed by high level of scheme dissipation, while numerical errors in terms of high -frequency oscillations appear and could destabilize the computation if the dissipation is reduced to a very low level. Numerical studies show that reducing the bandwidth dissipation to 70% of the conventional seventh-order upwind scheme can maximize the efficiency of the MP7-LD scheme in resolving small-scale turbulent fluctuations and, in the meantime preventing the accumulation of non-physical numerical errors.

Citation

Fang, J., Yao, Y., & Lu, L. (2015, January). Assessment of the low-dissipation monotonicity-preserving scheme in a series of DNS of shock-wave/turbulent boundary layer interactions. Paper presented at The 9th International Conference on Computational Physics (ICCP9)

• Presentation Conference Type: Conference Paper (unpublished)
• Conference Name: The 9th International Conference on Computational Physics (ICCP9)
• Start Date: Jan 7, 2015
• End Date: Jan 11, 2015
• Publication Date: Jan 7, 2015
• Peer Reviewed: Not Peer Reviewed
• Keywords: low-dissipation, DNS, shock-wave, turbulent boundary
• Publisher URL: http://www.physics.nus.edu.sg/iccp9/
• Additional Information: Title of Conference or Conference Proceedings : The 9th International Conference on Computational Physics (ICCP9)