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Evaluation of a fourth-order finite-volume compact scheme for les with explicit filtering

Elhami Amiri, A ; Sharif University of Technology | 2005

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  1. Type of Document: Article
  2. DOI: 10.1080/10407790590963613
  3. Publisher: 2005
  4. Abstract:
  5. The accuracy of the large-eddy simulation (LES) of turbulent flows can be increased by using high-order numerical schemes in space and time, due to a decrease in numerical errors. This work investigates a high-order compact finite-volume scheme suitable for LES. The explicit fourth-order Runge-Kutta (RK) scheme for time marching and fourth-order compact schemes for spatial derivatives using a cell-averaged approach are implemented. Different subgrid-scale models and the effect of explicit filtering in a fully turbulent channel flow are studied. In this flow, the fourth-order compact finite-volume method in space, and fourth-order RK in time in conjunction with the dynamic Smagorinsky model with explicit filter-grid size ratio of √6, show the best agreement with the available reference data. Copyright © Taylor & Francis Inc
  6. Keywords:
  7. Channel flow ; Computer simulation ; Error analysis ; Finite volume method ; Runge Kutta methods ; Large-eddy simulation (LES) ; Numerical errors ; Smagorinsky model ; Turbulent channel flow ; Turbulent flow
  8. Source: Numerical Heat Transfer, Part B: Fundamentals ; Volume 48, Issue 2 , 2005 , Pages 147-163 ; 10407790 (ISSN)
  9. URL: https://www.tandfonline.com/doi/abs/10.1080/10407790590963613