URANS computations for an oscillatory non-isothermal triple-jet using thek-? and second moment closure turbulence models

2003 ◽  
Vol 43 (9) ◽  
pp. 1019-1044 ◽  
Author(s):  
M. Nishimura ◽  
N. Kimura
Keyword(s):  
Turbulence Models ◽  
Moment Closure ◽  
Second Moment ◽  
Second Moment Closure

ANALYSIS OF SYNTHETIC JET FLOW FIELD: APPLICATION OF URANS APPROACH

2011 ◽  
Vol 35 (3) ◽  
pp. 337-353 ◽  
Author(s):  
Farzad Bazdidi-Tehrani ◽  
Mehdi Jahromi
Keyword(s):  
Flow Field ◽  
Turbulence Models ◽  
Field Application ◽  
Synthetic Jet ◽  
Moment Closure ◽  
Navier Stokes ◽  
Second Moment ◽  
Long Time ◽  
Second Moment Closure ◽  
Reasonable Prediction

The present paper reports the time dependent simulation of a turbulent plane synthetic jet using an unsteady Reynolds averaged Navier-Stokes approach on the basis of the first and second moment closure turbulence models. All the applied turbulence models can capture a global feature of the long time averaged flow field quite well. However, the standard k – ε model yields a disappointing prediction of the turbulence field with inaccurately high levels of turbulence kinetic energy and normal Reynolds stress distributions. The second moment closure model with quadratic nonlinear pressure strain approximation shows the most reasonable prediction of the phase averaged flow and turbulence fields.

Nonlinear second moment closure consistent with shear and strain flows

AIAA Journal ◽  
1997 ◽  
Vol 35 ◽  
pp. 825-831
Author(s):  
Dirk G. Pfuderer ◽  
Claus Eifert ◽  
Johannes Janicka
Keyword(s):  
Moment Closure ◽  
Second Moment ◽  
Second Moment Closure

Computation of Discrete-Hole Film Cooling by a Near-Wall Second-Moment Turbulence Closure

1999 ◽  
Author(s):  
Hamn-Ching Chen ◽  
Gengsheng Wei ◽  
Je-Chin Han
Keyword(s):  
Film Cooling ◽  
Moment Closure ◽  
Navier Stokes ◽  
Closure Model ◽  
Complex Flow ◽  
Second Moment ◽  
Finite Analytic Method ◽  
Second Moment Closure ◽  
Effectiveness Prediction ◽  
Near Wall

Abstract A multiblock Favre-Averaged Navier-Stokes (FANS) method has been developed in conjunction with a chimera domain decomposition technique for investigation of flat surface, discrete-hole film cooling performance. The finite-analytic method solves the FANS equations in conjunction with a near-wall second-order Reynolds stress (second-moment) closure model and a two-layer k-ε model. Comparisons of flow fields and turbulence quantities with experimental data clearly demonstrate the capability of the near-wall second-moment closure model for accurate resolution of the complex flow interaction bewteen the coolant jet and the mainstream. The near-wall second-moment anisotropic model provides better agreement in adiabatic film effectiveness prediction than the two-layer k-ε model.

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