{"product_id":"experimental-investigation-of-flow-over-a-rotating-disk-von-muhammad-ehtisham-siddiqui","title":"Experimental Investigation of Flow over a Rotating-Disk","description":"\u003cp\u003eThis book is based on the experimental study of the rotating-disk boundary-layer flow.  In the case of the natural flow, different flow regimes are identified as a function of nondimensional distance, R, from the disk axis. Mean-velocity profiles initially follow the von Kármán solution. At higher R, departures arise and increase with R, which are due to the spatial growth of boundary-layer instability modes, whose radial growth rates are found to match linear-theory predictions. The profiles in the fully turbulent region follow the turbulent log law and the velocity spectra exhibit Kolmogorov-type power laws.  To study the response to forcing, a setup has been designed which allows the excitation of stationary (in the lab frame) disturbances or disturbances which rotate with a frequency independently of the disk frequency. The flow response to both types of forcing and two forcing element geometries was studied. Stationary forcing produces a wake which decays with distance from the element, in agreement with theory. Forcing due to rotating elements can generate growing wavepacket-like disturbances, which although nonlinear, follow trajectories close to linear-theory predictions.\u003c\/p\u003e\u003cdiv class=\"aw-variant-hidden-subtitle-div\" id=\"aw-variant-subtitle-9783845429120\"\u003e\u003ch3\u003eNatural and Forced Boundary-Layer Flow Behavior And Characterization Of Different Flow Regimes\u003c\/h3\u003e\u003c\/div\u003e","brand":"Autorenwelt Shop","offers":[{"title":"Softcover - 9783845429120","offer_id":39494464700509,"sku":"9783845429120","price":49.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0622\/files\/f55bd83c-e7e8-462a-8111-d96053697392.jpg?v=1765264492","url":"https:\/\/shop.autorenwelt.de\/en\/products\/experimental-investigation-of-flow-over-a-rotating-disk-von-muhammad-ehtisham-siddiqui","provider":"Autorenwelt Shop","version":"1.0","type":"link"}