Overview

Solver: pimpleFoam
Experimental case described by Martinuzzi and Tropea [49]
Reynolds number based on the cube height of $ Re_h $ 40000
Turbulence is modelled using the Spalart-Allmaras Improved Delayed Detached Eddy Simulation (IDDES) model
$FOAM_TUTORIALS/incompressible/pimpleFoam/LES/surfaceMountedCube

Case description

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

Velocity	Velocity
Mean velocity	Mean velocity

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 [49]