{"product_id":"velocity-field-measurements-of-an-axisymmetric-nasa-technical-reports-server-ntrs-9781289147617","title":"Velocity-Field Measurements of an Axisymmetric Separated Flow Subjected to Amplitude-Modulated Excitation","description":"Active flow control was applied at the point of separation of an axisymmetric, backward-facing-step flow. The control was implemented by employing a Helmholtz resonator that was externally driven by an amplitude-modulated, acoustic disturbance from a speaker located upstream of the wind tunnel. The velocity field of the separating\/reattaching flow region downstream of the step was characterized using hotwire velocity measurements with and without flow control. Conventional statistics of the data reveal that the separating\/reattaching flow is affected by the imposed forcing. Triple decomposition along with conditional averaging was used to distinguish periodic disturbances from random turbulence in the fluctuating velocity component. A significant outcome of the present study is that it demonstrates that amplitude-modulated forcing of the separated flow alters the flow in the same manner as the more conventional method of periodic excitation.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eAuthor:\u003c\/b\u003e Nasa Technical Reports Server (Ntrs),Barry James Trosin\u003cbr\u003e\u003cb\u003eISBN-10:\u003c\/b\u003e 1289147612\u003cbr\u003e\u003cb\u003eISBN-13:\u003c\/b\u003e 9781289147617\u003cbr\u003e\u003cb\u003ePublisher:\u003c\/b\u003e Bibliogov\u003cbr\u003e\u003cb\u003eLanguage:\u003c\/b\u003e English\u003cbr\u003e\u003cb\u003ePublished:\u003c\/b\u003e 06\/28\/2013\u003cbr\u003e\u003cb\u003ePages:\u003c\/b\u003e 114\u003cbr\u003e\u003cb\u003eFormat:\u003c\/b\u003e Paperback\u003cbr\u003e\u003cb\u003eWeight:\u003c\/b\u003e 0.48lbs\u003cbr\u003e\u003cb\u003eSize:\u003c\/b\u003e 9.69h x 7.44w x 0.24d","brand":"Nasa Technical Reports Server (Ntrs)","offers":[{"title":"Paperback","offer_id":47611423654143,"sku":"9781289147617","price":19.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/2982\/9887\/files\/img_155fb955-7eff-45c5-8cf4-22b787fb9e89.jpg?v=1764513784","url":"https:\/\/www.whiterainbookhouse.com\/products\/velocity-field-measurements-of-an-axisymmetric-nasa-technical-reports-server-ntrs-9781289147617","provider":"WR Book House","version":"1.0","type":"link"}