Fundamental characteristic of the induced flow by active dimple

Junki Hamada, Masahiro Motosuke, Shinji Honami

Research output: Contribution to conferencePaper

Abstract

With the downsizing of fluid machinery, a control of low Reynolds number flow is important as a significant factor to affect the energy efficiency. In the present study, an active dimple that vibrates its bottom surface is employed as control actuator for low Reynolds number flow. Induced flow around active dimple and solid dimple which has a fixed bottom surface is investigated. Dimple diameter is 5.0 mm, and Reynolds number based on channel height is 650. The normalized dimple depth by the dimple diameter ranges from 0.02 to 0.3. It is confirmed that both types of dimple have an optimum dimple depth that introduces the maximum outflow at the dimple edge.

Original languageEnglish
Publication statusPublished - 20 Jun 2012
Event50th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition - Nashville, TN, United States
Duration: 9 Jan 201212 Jan 2012

Conference

Conference50th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition
CountryUnited States
CityNashville, TN
Period9/01/1212/01/12

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Hamada, J., Motosuke, M., & Honami, S. (2012). Fundamental characteristic of the induced flow by active dimple. Paper presented at 50th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition, Nashville, TN, United States.