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Hybrid RANS/LES computation of plane impinging jet flow

(2011) ARCHIVES OF MECHANICS. 63(2). p.117-136
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Abstract
Flow characteristics are presented of simulation results of plane impinging jets at high nozzle-plate distances, with two k-omega based hybrid RANS/LES (Reynolds Averaged Navier-Stokes/Large-Eddy Simulation) models and a k-omega RANS model. The first hybrid RANS/LES model is obtained by substitution of the turbulent length scale by the local grid size in the destruction term of the turbulent kinetic energy equation and in the definition of the eddy-viscosity. The second hybrid model is obtained by a latency factor in the definition of the eddy-viscosity. The RANS model overpredicts the length of the jet core region, caused by too weak turbulent mixing in the shear layers of the jet. This results in erroneous near-wall shear stress along the impingement plate. The hybrid RANS/LES models overcome the deficiency of the BANS model. Further, the hybrid models represent the flow with much more detail. For instance, the Gortler vortices are well reproduced in the stagnation flow region by the hybrid RANS/LES models.
Keywords
PREDICTION, INLET, SLOT JET, FLAT-PLATE, TURBULENCE MODELS, K-OMEGA MODEL, LARGE-EDDY SIMULATION, hybrid RANS/LES model, turbulence modeling, plane impinging jet

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Citation

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Chicago
Kubacki, Slawomir, Jacek Rokicki, and Erik Dick. 2011. “Hybrid RANS/LES Computation of Plane Impinging Jet Flow.” Archives of Mechanics 63 (2): 117–136.
APA
Kubacki, Slawomir, Rokicki, J., & Dick, E. (2011). Hybrid RANS/LES computation of plane impinging jet flow. ARCHIVES OF MECHANICS, 63(2), 117–136. Presented at the 19th Polish National Fluid Dynamics Conference (KKMP 2010).
Vancouver
1.
Kubacki S, Rokicki J, Dick E. Hybrid RANS/LES computation of plane impinging jet flow. ARCHIVES OF MECHANICS. 2011;63(2):117–36.
MLA
Kubacki, Slawomir, Jacek Rokicki, and Erik Dick. “Hybrid RANS/LES Computation of Plane Impinging Jet Flow.” ARCHIVES OF MECHANICS 63.2 (2011): 117–136. Print.
@article{1908934,
  abstract     = {Flow characteristics are presented of simulation results of plane impinging jets at high nozzle-plate distances, with two k-omega based hybrid RANS/LES (Reynolds Averaged Navier-Stokes/Large-Eddy Simulation) models and a k-omega RANS model. The first hybrid RANS/LES model is obtained by substitution of the turbulent length scale by the local grid size in the destruction term of the turbulent kinetic energy equation and in the definition of the eddy-viscosity. The second hybrid model is obtained by a latency factor in the definition of the eddy-viscosity. The RANS model overpredicts the length of the jet core region, caused by too weak turbulent mixing in the shear layers of the jet. This results in erroneous near-wall shear stress along the impingement plate. The hybrid RANS/LES models overcome the deficiency of the BANS model. Further, the hybrid models represent the flow with much more detail. For instance, the Gortler vortices are well reproduced in the stagnation flow region by the hybrid RANS/LES models.},
  author       = {Kubacki, Slawomir and Rokicki, Jacek and Dick, Erik},
  issn         = {0373-2029},
  journal      = {ARCHIVES OF MECHANICS},
  language     = {eng},
  location     = {Poznan, Poland},
  number       = {2},
  pages        = {117--136},
  title        = {Hybrid RANS/LES computation of plane impinging jet flow},
  url          = {http://am.ippt.gov.pl/index.php/am/article/view/515},
  volume       = {63},
  year         = {2011},
}

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