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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