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| A relative assessment of sub grid scale models for large eddy simulation of co-axial combustor
Rupesh D. Shah, Hanumanthappa Patil and Jyotirmay Banerjee*
The Journal of Mechanical Science and Technology, vol. 26, no. 6, pp.1753-1763, 2012
Abstract : Large eddy simulation (LES) of a co-axial combustor is reported. Accuracy of LES depends on the ability of the sub-grid scale (SGS)
models to predict the turbulent viscosity. The sensitivity of LES results for different SGS models is established for a coaxial annular
combustor. The radial, axial and tangential velocity distribution predicted by four sub-grid scale models is compared with the experimental
results of Sommerfeld and Qiu. It is observed that the flow physics is captured more accurately by WALE model as compared to other
SGS models. The predictions of WALE model are closer to the experimental results for all stations in the flow domain.
Keyword : Isothermal analysis; LES; Sub grid scale model; Transient simulation |
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