AVBv  AVBP Valve Computation
 Author : Frédéric Ducros, CERFACS
 ducros@cerfacs.fr
Objectives :
This project centers around the calculation of the flow around a isolated valve.
The computations are based on the unstructured flower solver
AVBP
of CERFACS.
For two differents meshes and regimes the three following tasks are proposed:
 Simulation of the flow around the valve,
visualization of pressure and velocity fields, influence of some
simulation parameters such as
Reynolds number, artificial viscosity, boundary conditions, etc.
 Programming exercice:
Develop a Fortran routine able to produce the repartition
of pressure and total energy
at the wall and for chosen axis in the proposed mesh. Use this routine
to evaluate the pressure drop through the valve. For two fixed points
produce the pressure drop as a function of time in case of
unsteady simulation.
 Pressure drop analysis:
For three different valve positions produce a mean pressure drop
and compare it with results available in literature.
Working plan :
 AVBv.1 : Introduction to the AVBP flow solver, execution of an academic
test case (channel with bump).
 AVBv.2 : Valve calculation, influence of simulation parameters.
 AVBv.3 : Pressure drop estimation.
 AVBv.4 : Pressure drop analysis.
Week 
1 
2 
3 
4 
5 
6 
AVBv.1 
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AVBv.2 

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AVBv.3 


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AVBv.4 




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Exam 





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Deliverables :
 1. Velocity and pressure fields.
 2. Pressure drop estimation: Fortran programming and validation.
 3. Pressure drop estimation for different valve positions, compared with literature.
Bibliography :
 [1] The AVBP User's Manual, T. Schönfeld, CERFACS, 1999.
 [2] Cours de FORTRAN77/90.
 [3] Memento des pertes de charge.
Pedagogical interest :
Introduction to some CFD problems of internal flows, getting familiar
with unstructured data format.
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