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2004•Applied Mathematics Research eXpressOpen access

Untitled research work

Emmanuel Creusé, Iraj Mortazavi

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Abstract

A control procedure is applied to a two-dimensional slightly compressible flow over backward-facing step. This low Reynolds number flow is computed by a direct numerical simulation method and validated for some existing experimental and numerical results. Then, an oscillating inlet flow variation is applied to control the flow behavior inside the channel. The amplitude and the frequency effects are especially analyzed to obtain a better understanding of their influence on the shedding evolution and the recirculation zone behavior.

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What this paper is about

A control procedure is applied to a two-dimensional slightly compressible flow over backward-facing step. This low Reynolds number flow is computed by a direct numerical simulation method and validated for some existing experimental and numerical results. Then, an oscillating inlet flow variation is applied to control the flow behavior inside the channel. The amplitude and the frequency effects are especially analyzed to obtain a better understanding of their influence on the shedding evolution and the recirculation zone behavior.

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Available abstract

A control procedure is applied to a two-dimensional slightly compressible flow over backward-facing step. This low Reynolds number flow is computed by a direct numerical simulation method and validated for some existing experimental and numerical results. Then, an oscillating inlet flow variation is applied to control the flow behavior inside the channel. The amplitude and the frequency effects are especially analyzed to obtain a better understanding of their influence on the shedding evolution and the recirculation zone behavior.

Key concepts: Mechanics, Reynolds number, Flow (mathematics), Computer simulation, Amplitude, Compressible flow, Compressibility, Numerical analysis

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