The 3D Velocity Field of an Impacting Turbulent Jet

Autor:	K Anandarajah, Neil A. Halliwell, Graham K. Hargrave, T. C. Williams
Rok vydání:	2006
Předmět:	Physics History Jet (fluid) business.industry Turbulence Flow (psychology) Mechanics Computer Science Applications Education Physics::Fluid Dynamics Optics Particle image velocimetry Turbulence kinetic energy Shear stress Vector field business Image resolution
Zdroj:	Journal of Physics: Conference Series. 45:162-172
ISSN:	1742-6596 1742-6588
DOI:	10.1088/1742-6596/45/1/022
Popis:	The flow structure of a normally impacting jet is of interest for both its practical importance and because it represents an important test case for the development and validation of turbulent flow models. Experimental data, obtained using Stereo Digital Particle Image Velocimetry (S-DPIV), is presented for a submerged impacting water jet, operating in the turbulent regime (Re = 23400). Profiles of time-averaged velocity, fluctuating velocity and shear stress are presented for the impaction region out to a radial distance of 2.5 jet diameters. The DPIV results showed good agreement with the probe data found in the literature. The application of the DPIV technique overcame the directional ambiguity problems associated with the probe techniques and errors associated with their operation in regions of high turbulence intensity. The potential spatial resolution limitations of the DPIV technique are discussed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::311ddf644e757da25d8166cde98d9fb0 https://doi.org/10.1088/1742-6596/45/1/022 Zobrazit plný text záznamu