Surface mounted cube

Overview

• Solver: pimpleFoam
• Experimental case described by Martinuzzi and Tropea 46
• Reynolds number based on the cube height of $Re_h$ 40000
• Turbulence is modelled using the SA-IDDES model
• surfaceMountedCube

Mesh

• 3D structured mesh created using blockMesh

Boundary conditions

A precursor boundaryFoam calculation is used to set the inlet flow conditions onto which turbulent content is superimposed using the turbulentDFSEMInlet velocity condition.

Common fields

• $U$ 1 m/s
• $h$ 1 m
• $\nu$ 2.5e-5 m2/s

Velocity: U

Patch	Condition	Value
Inlet	turbulentDFSEMInlet
Outlet	zeroGradient
Walls	noSlip

Pressure: p

Patch	Condition	Value
Inlet	zeroGradient
Outlet	fixedValue	0 Pa (static)
Walls	zeroGradient

Turbulence fields

Turbulence viscosity: nut

Patch	Condition	Value
Inlet	calculated
Outlet	calculated
Walls	nutUSpaldingWallFunction

Spalart-Allmaras

Modified viscosity: nuTilda

Patch	Condition	Value
Inlet	mappedFixedValue
Outlet	zeroGradient
Walls	zeroGradient

Results

The following images show examples of the instantaneous- and mean-velocity predictions

Profiles at a series of x/h positions are presented in the following images, where the predictions are compared against the experimental data of Martinuzzi and Tropea 46