Implicit large eddy simulation of a deep cavity using high-resolution methods

B. Thornber, D. Drikakis

Research output: Contribution to conferencePaper

Abstract

Implicit Large Eddy Simulations of a deep cavity at Mach 0.8 and Reynolds based on cavity length of 860,000 have been conducted using a recently developed Implicit Large Eddy Simulation (ILES) method. The numerical method employed is a new fifth-order accurate in space method where the variable extrapolation has been modified to give greatly improved performance in low Mach regions of the flow, such as areas of turbulent flow, yet retaining the shock capturing capabilities of the original method, and positivity of advected species. The ILES results are compared to experimental measurements by Forestier et al. (J. Fluid Mech.,vol. 475, 2003) of the mean flow field, Reynolds stresses and pressure spectra. The frequency and amplitude of the fundamental modes are predicted to within 2% and 6dB at all grid levels. There is excellent agreement of the mean flow field and Reynolds stresses, demonstrating that there is no need for an explicit subgrid model when using the new reconstruction method for this flow configuration.

Conference

Conference46th AIAA Aerospace Sciences Meeting and Exhibit
CountryUnited States
CityReno, NV
Period7/01/0810/01/08

Fingerprint

Large Eddy Simulation
Cavity
Reynolds Stress
High Resolution
Mean Field
Flow Field
Shock Capturing
Extrapolation
Turbulent Flow
Positivity
Simulation Methods
Numerical Methods
Grid
Fluid
Configuration
Model

Keywords

  • large eddy simulation
  • aerospace engineering
  • computational fluid dynamics
  • Reynolds number
  • cavity length
  • deep cavity
  • flow configurations

Cite this

Thornber, B., & Drikakis, D. (2008). Implicit large eddy simulation of a deep cavity using high-resolution methods. Paper presented at 46th AIAA Aerospace Sciences Meeting and Exhibit, Reno, NV, United States.
Thornber, B. ; Drikakis, D. / Implicit large eddy simulation of a deep cavity using high-resolution methods. Paper presented at 46th AIAA Aerospace Sciences Meeting and Exhibit, Reno, NV, United States.
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abstract = "Implicit Large Eddy Simulations of a deep cavity at Mach 0.8 and Reynolds based on cavity length of 860,000 have been conducted using a recently developed Implicit Large Eddy Simulation (ILES) method. The numerical method employed is a new fifth-order accurate in space method where the variable extrapolation has been modified to give greatly improved performance in low Mach regions of the flow, such as areas of turbulent flow, yet retaining the shock capturing capabilities of the original method, and positivity of advected species. The ILES results are compared to experimental measurements by Forestier et al. (J. Fluid Mech.,vol. 475, 2003) of the mean flow field, Reynolds stresses and pressure spectra. The frequency and amplitude of the fundamental modes are predicted to within 2{\%} and 6dB at all grid levels. There is excellent agreement of the mean flow field and Reynolds stresses, demonstrating that there is no need for an explicit subgrid model when using the new reconstruction method for this flow configuration.",
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author = "B. Thornber and D. Drikakis",
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note = "46th AIAA Aerospace Sciences Meeting and Exhibit ; Conference date: 07-01-2008 Through 10-01-2008",

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Thornber, B & Drikakis, D 2008, 'Implicit large eddy simulation of a deep cavity using high-resolution methods' Paper presented at 46th AIAA Aerospace Sciences Meeting and Exhibit, Reno, NV, United States, 7/01/08 - 10/01/08, .

Implicit large eddy simulation of a deep cavity using high-resolution methods. / Thornber, B.; Drikakis, D.

2008. Paper presented at 46th AIAA Aerospace Sciences Meeting and Exhibit, Reno, NV, United States.

Research output: Contribution to conferencePaper

TY - CONF

T1 - Implicit large eddy simulation of a deep cavity using high-resolution methods

AU - Thornber, B.

AU - Drikakis, D.

PY - 2008/1/10

Y1 - 2008/1/10

N2 - Implicit Large Eddy Simulations of a deep cavity at Mach 0.8 and Reynolds based on cavity length of 860,000 have been conducted using a recently developed Implicit Large Eddy Simulation (ILES) method. The numerical method employed is a new fifth-order accurate in space method where the variable extrapolation has been modified to give greatly improved performance in low Mach regions of the flow, such as areas of turbulent flow, yet retaining the shock capturing capabilities of the original method, and positivity of advected species. The ILES results are compared to experimental measurements by Forestier et al. (J. Fluid Mech.,vol. 475, 2003) of the mean flow field, Reynolds stresses and pressure spectra. The frequency and amplitude of the fundamental modes are predicted to within 2% and 6dB at all grid levels. There is excellent agreement of the mean flow field and Reynolds stresses, demonstrating that there is no need for an explicit subgrid model when using the new reconstruction method for this flow configuration.

AB - Implicit Large Eddy Simulations of a deep cavity at Mach 0.8 and Reynolds based on cavity length of 860,000 have been conducted using a recently developed Implicit Large Eddy Simulation (ILES) method. The numerical method employed is a new fifth-order accurate in space method where the variable extrapolation has been modified to give greatly improved performance in low Mach regions of the flow, such as areas of turbulent flow, yet retaining the shock capturing capabilities of the original method, and positivity of advected species. The ILES results are compared to experimental measurements by Forestier et al. (J. Fluid Mech.,vol. 475, 2003) of the mean flow field, Reynolds stresses and pressure spectra. The frequency and amplitude of the fundamental modes are predicted to within 2% and 6dB at all grid levels. There is excellent agreement of the mean flow field and Reynolds stresses, demonstrating that there is no need for an explicit subgrid model when using the new reconstruction method for this flow configuration.

KW - large eddy simulation

KW - aerospace engineering

KW - computational fluid dynamics

KW - Reynolds number

KW - cavity length

KW - deep cavity

KW - flow configurations

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M3 - Paper

ER -

Thornber B, Drikakis D. Implicit large eddy simulation of a deep cavity using high-resolution methods. 2008. Paper presented at 46th AIAA Aerospace Sciences Meeting and Exhibit, Reno, NV, United States.