Case Description

• ·  Impinging jet flow is used in cooling process such as gas turbine cooling , rocket launcher cooling.
• ·  Heat transfer is an important factor in impinging jet
• ·  “Impinging jet studies for turbulence model assessment” , Cooper et al., 1993. is used for experimental data.

ComputationalMesh

• 4° axi-symmetric wedge cells are created using blockMesh
• Hexahedral : 165,000

Physical Models

• ​Turbulence Model​

·   Standard k-e model (2 Equation model)​

·   Launder-Reece-Rodi (LRR) model

·   Speziale-Sarkar-Gatski (SSG) model

Numerical Method

• ·  Pressure-velocity coupling based on SIMPLE algorithm
• ·  Second order scheme for spatial discretization of convection term
• ·  Constant value inlet B.C with zero gradient pressure and Incompressible condition
• ·  Normalized residual of P < 10-5, the other < 10-5 for convergence

Boundary Conditions

Results

• Comparison of Mean Velocity Magnitude Profiles ( H/D = 2 case )​

Graphical contours ( H/D = 2 case )