Communication Dans Un Congrès Année : 2011

High Reynolds Channel Flows: Upstream interaction of various wall deformations

Résumé

The flow at high Reynolds number in the entrance of distorted channel is considered. We analyse the anticipated fluid responds to a downstream wall distortion, and we find that the non linear upstream length $\Delta={\mbox{O}}(R_e^{1/7})$, using either a new asymptotic approach called Successive Complementary Expansions Method (SCEM) with generalized asymptotic expansions and a modal analysis of the perturbed flow. Comparisons with Navier-Stokes solutions show that the mathematical model is well founded.

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hal-04026028 , version 1 (13-03-2023)

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  • HAL Id : hal-04026028 , version 1

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Patricia Cathalifaud, Mokhtar Zagzoule, Jean Cousteix, Jacques Mauss. High Reynolds Channel Flows: Upstream interaction of various wall deformations. International Conference Boundary and Interior Layers Computational and Asymptotic Methods - BAIL 2010, Jul 2010, Saragosse, Spain. pp.0. ⟨hal-04026028⟩
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