Growth characteristics downstream of a shallow bump: Computation and experiment | Zendy

R. D. Joslin | Zendy; C. E. Grosch | Zendy

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Growth characteristics downstream of a shallow bump: Computation and experiment

Author(s) -

R. D. Joslin,

C. E. Grosch

Publication year - 1995

Publication title -

physics of fluids

Language(s) - English

Resource type - Journals

eISSN - 1089-7666

pISSN - 1070-6631

DOI - 10.1063/1.868680

Subject(s) - physics , amplitude , computation , mechanics , mode (computer interface) , downstream (manufacturing) , flow (mathematics) , field (mathematics) , energy (signal processing) , computational physics , classical mechanics , optics , quantum mechanics , operations management , mathematics , algorithm , computer science , pure mathematics , economics , operating system

Measurements of the velocity field created by a shallow bump on a wall revealed that an energy peak in the spanwise spectrum associated with the driver decays and an initially small‐amplitude secondary mode rapidly grows with distance downstream of the bump. Linear theories could not provide an explanation for this growing mode. The present Navier–Stokes simulation replicates and confirms the experimental results. Insight into the structure of the flow was obtained from a study of the results of the calculations and is presented.

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