1. Presentation.
The main target of this study is to handle the fluid dynamic
code Star CD. The tutorial takes the exemple of a two-dimensional flow
in a labyrinth. The labyrinth consists of a space enclosed by walls with
one inlet, one outlet and four baffles (zero-thickness solid cells). The
fluid within the labyrinth is air and its physical properties are :
Density
|
1.205
|
kg/m3
|
Molecular viscosity
|
1.81e-5
|
Pa s
|
Specific heat
|
1006.0
|
J/kg K
|
Thermal conductivity
|
2.637e-2
|
W/m K
|
Air at standard pressure and temperature (1 bar and 293K) enters the
labyrinth with a velocity of 0.02 cm/s in the laminar case and of 2 m/s
in the turbulent case. The total mass entering the labyrinth exists through
the outlet. The flow is assumed to be two-dimensional, with constant fluid
density, viscosity and temperature in the third part of the study. The
influence of temperature is studied in the fourth part of this report.
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