AVBe  AVBP Engine Computation
 Author : Frédéric Ducros , CERFACS
 ducros@cerfacs.fr
Objectives :
This project centers around the calculation of the flow around and inside
a model of a 2D engine.
The computations are based on the unstructured flower solver
AVBP
of CERFACS.
The three following tasks are proposed:
 Simulation of the flow in and around the engine for weak external
Mach numbers (M=0.3), visualization of pressure, density and
velocity fields, influence of
some simulation parameters such as Reynolds number, artificial viscosity,
angle of incidence, etc.
 Programming exercice:
Develop a Fortran routine able to calculate the mass flow rate
going through the engine. Estimate this mass flow rate for different
angles of incident and compare it with a straightforward theoretical
model. Redo this exercice for other cruise conditions
(higher Mach numbers).
Working plan :
 AVBe.1 : Introduction to the AVBP flow solver, execution of an academic
test case (channel with bump).
 AVBe.2 : Engine calculation, influence of simulation parameters.
 AVBe.3 : Mass flow rate estimation for two different regimes, comparison
with a straightforward model.
Week 
1 
2 
3 
4 
5 
6 
AVBe.1 
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AVBe.2 

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AVBe.3 


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Exam 





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Deliverables :
 1. Convergence history, pressure, density and velocity fields in and around the engine
 2. Fortran code calculating the mass flow rate
 3. Mass flow rate as a function of the incidence angle and of the external Mach number
Bibliography :
 [1] The AVBP User's Manual, T. Schönfeld, CERFACS, 1999.
 [2] Cours de FORTRAN77/90.
Pedagogical interest :
Introduction to some aeronautical CFD problems, getting familiar with unstructured data format.
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