Author: Donald Edward WroblewskiPublisher:
ISBN:
Category :
Languages : en
Pages : 670
Book Description
An Experimental Investigation of Turbulent Heat Transport in a Boundary Layer with an Embedded Streamwise Vortex
Author: Donald Edward WroblewskiPublisher:
ISBN:
Category :
Languages : en
Pages : 670
Book Description
Experimental Investigation of the Turbulent Far Wake Behind Finite and Infinite Obstacles
Author: David Eugene BarlandPublisher:
ISBN:
Category :
Languages : en
Pages : 150
Book Description
Scientific and Technical Aerospace Reports
Author: An Experimental Investigation of the Heat-transfer Effects of a Longitudinal Vortex Embedded in a Turbulent Boundary Layer
Author: Stanford University. Thermosciences Division. Thermosciences DivisionPublisher:
ISBN:
Category :
Languages : en
Pages : 276
Book Description
Progress in Hybrid RANS-LES Modelling
Author: Shia-Hui PengPublisher: Springer Science & Business Media
ISBN: 3642141684
Category : Technology & Engineering
Languages : en
Pages : 361
Book Description
Hybrid modelling of turbulent flows, combining RANS and LES techniques, has received increasing attention over the past decade to fill the gap between (U)RANS and LES computations in aerodynamic applications at industrially relevant Reynolds numbers. With the advantage of hybrid RANS-LES modelling approaches, being considerably more computationally efficient than full LES and more accurate than (U)RANS, particularly for unsteady aerodynamic flows, has motivated numerous research and development activities. These activities have been increasingly stimulated by the provision of modern computing facilities. The present book contains the contributions presented at the Third Symposium on Hybrid RANS-LES Methods, held in Gdansk, Poland, 10-12 June 2009. To a certain extent, this conference was a continuation of the first symposium taking place in Stockholm (Sweden, 2005) and the second in Corfu (Greece, 2007). Motivated by the extensive interest in the research community, the papers presented at the Corfu symposium were published by Springer in the book entitled “Advances in Hybrid RANS-LES Modelling” (in Notes on Numerical Fluid Mechanics and Multidisciplinary Design, Vol. 97). At the Gdansk symposium, along with four invited keynotes, given respectively by S. Fu, U. Michel, M. Sillen and P. Spalart, another 28 papers were presented on the following topics: Unsteady RANS, LES, Improved DES Methods, Hybrid RANS-LES Methods, DES versus URANS and other Hybrid Methods, Modelli- related Numerical Issues and Industrial Applications. After the symposium all full papers have been further reviewed and revised for publication in the present book.
Applied mechanics reviews
Author: NASA Technical Memorandum
Author: Interaction of an Embedded Longitudinal Vortex with an Attached, Three-dimensional, Turbulent Boundary Layer
Author: Stanford University. Thermosciences Division. Thermosciences DivisionPublisher:
ISBN:
Category :
Languages : en
Pages : 170
Book Description
Experimental Study of the Effect of Streamwise Vortices on Unsteady Turbulent Boundary-layer Separation
Author: W. W. HumphreysPublisher:
ISBN:
Category :
Languages : en
Pages : 296
Book Description
This experiment studied the effect of streamwise vortices on unsteady turbulent boundary-layer separation. The objectives were to document the flow field, to characterize the time response of the boundary layer, and to understand the actual mechanisms by which the streamwise vortices modify boundary-layer behavior. A new configuration for non-obtrusive three-component Laser Doppler Anemometry (LDA) determined the phase averaged velocity and Reynolds stress components, in an unsteady water tunnel, at a momentum thickness Reynolds number of 1840. The streamwise vortices were created by three pairs of half-delta wing vortex generators, while the boundary-layer separation was controlled through impulsively initiated opposite-wall suction, which created a strong adverse pressure gradient. The time response of the freestream velocity demonstrates that convection is the primary mechanism by which vortex generators modify the response of the boundary layer. There is an initial fast response throughout the boundary layer which is unaffected by the presence of vortex generators, followed by a slow or convective response, the magnitude of which is substantially modified by the presence of the vortex generators. Flow control, Unsteady turbulent layers. Aircraft, Vortex generators. (jes).
Author: