Flow Description:

Reynolds number Re=10,595, based on the hill height h and the bulk velocity at the crest of the hill U_b.
 
 

Geometry:

Lx=9h; Ly=3.035h

For the accurate description of the hill, click here.
 
 

Computational Domain:

At the end of the 9th workshop held in Darmstadt, it was decided to renew the present test case in Poitiers, but to compute it with inlet/outlet boundary conditions rather than periodic, in order to avoid building up of errors.
Therefore, participants are asked to use the following domain:

The inlet profiles to be applied at x/h=-3 are provided in the database given below: file data-008 (and budget-008 for the dissipation).
The outlet is located at x/h=15.

A wall boundary condition is to be applied at y/h=3.035.
 

Database:

Highly resolved LES Data:

- Mean velocities and Reynolds stresses: download the archive (130k).
- Budgets of turbulent kinetic energy k: download the archive (150k).

Remark: all quantities are made dimensionless by using h and U_b.
 

References:

 1.Jang, Temmerman, Leschziner (4.9M): Investigation of anisotropy-resolving turbulence models by reference to highly resolved
    LES data for separated flow, ECCOMAS Computational Fluid Dynamics Conference, Swansea, September 4-7, 2001
 2.Temmerman, Leschziner (375k): Large Eddy Simulation of separated flow in a streamwise periodic channel construction, Int.
    Symp. on Turbulence and Shear Flow Phenomena, Stockholm, June 27-29, 2001
 3.Mellen, Fröhlich, Rodi (1.2M): Large Eddy Simulation of the flow over periodic hills, 16th IMACS World Congress, Lausanne, 2000
 
 
 

Required results:

Participants are invited to submit results in a form similar to the database given above, i.e.:

-A series of files containing the mean velocity and Reynolds stress profiles (one file per profile) named "results-XXX", where XXX stands for 001, 002, 003, 004, 005, 006, 007, 008, 009, 010.

- 5 series of files containing the budgets of <uu>, <vv>, <ww>, <uv> and k, respectively.  Irrelevant files are to be omitted (e.g., for a k-epsilon model, only k budgets are required).  The files are to be named "budget-VAR-XXX", where VAR stands for uu, vv, ww, uv, k and XXX stands again for the location.
 

Each file have to start with 9 comment lines beginning by a "#", consisting of:

#Case
#Name
#Affiliation
#Code/Numerical method
#Mesh type
#Turbulence model
#Wall treatment
#Any other useful information
#Column headings for the data

Examples:

File "results-001":

#Case9.2
#Rémi Manceau
#Laboratoire d'études aérodynamiques, université de Poitiers
#Finite volumes
#Block structured
#Reynolds stress model (Speziale, Sarkar, Gatski, 1991)
#Wall functions
#Without non-linear slow term, fine mesh
# Y/h    u/U_b    v/U_b    uu/U_b^2    vv/U_b^2   uv/U_b^2    k/U_b^2
 

File "budget-uu-001"

#Case9.2
#Rémi Manceau
#Laboratoire d'études aérodynamiques, université de Poitiers
#Finite volumes
#Block structured
#Reynolds stress model (Speziale, Sarkar, Gatski, 1991)
#Wall functions
#Without non-linear slow term, fine mesh
# Y/h    convec  produc    t-diff    p-strain    p-diff    v-diff    dissip
 
 

File "budget-k-001"

#Case9.2
#Rémi Manceau
#Laboratoire d'études aérodynamiques, université de Poitiers
#Finite volumes
#Block structured
#Reynolds stress model (Speziale, Sarkar, Gatski, 1991)
#Wall functions
#Without non-linear slow term, fine mesh
#Y/h    convec  produc    t-diff    p-strain    p-diff    v-diff    dissip    length scale
 

(N.B.: p-strain is of course supposed to be zero in the files budget-k-XXX.)
 
 

Moreover, participants are invited to submit a short description of their computations (mesh, numerical method, turbulence modelling, etc.)
Each participant will have 5 minutes to present these details (no results presentation).
 

To know how to submit the results, click here.
 

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