Publication: Numerical analysis of the flow in a narrow channel with a backward facing step
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2014
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2014-07-11
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Abstract
The project consists on the development of a numerical method using Matlab to
simulate the flow over a backward facing step. The effects of varying the Reynolds
number and the Expansion Ratio, H/S, are then studied. The simulations are performed
for the range of 5 ≤ Re ≤ 389 and 0 ≤ H/S ≤ 1/2.
The code is validated comparing the results with those obtained by Armaly, Durst,
Pereira & Schonung. They studied the flow over a similar channel with a backward
facing step varying the Reynolds number. Once checked that the numerical method
gives sensible results, a study of the effects of varying the expansion ratio, H/S, over
the Reynolds number range is carried out in order to find the appearance of a
recirculation bubble zone. Also the existence of an expansion ratio that has a
recirculation bubble for all Re and on the other side, an expansion ratio that does not
present any recirculation bubble over the range of will be investigated.
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Dinámica de fluidos, Análisis numérico, MATLAB (Programa de aplicación)