Author: Gustavo Cesar Rachid Bodstein
Publisher:
ISBN:
Category : Acoustic streaming
Languages : en
Pages : 370
Book Description
A Theoretical and Experimental Study of the Interaction of a Streamwise Vortex with a Surface
Author: Gustavo Cesar Rachid Bodstein
Publisher:
ISBN:
Category : Acoustic streaming
Languages : en
Pages : 370
Book Description
Publisher:
ISBN:
Category : Acoustic streaming
Languages : en
Pages : 370
Book Description
EXPERIMENTAL STUDY OF VORTEX RING INTERACTION WITH A FREE SURFACE.
Author: JUNG TAI KWON
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
angle is reduced.
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
angle is reduced.
An Experimental Study of Vortex Surface Interactions and 3-D Optical Topographic Mapping
Author: Alfredo Gabrie
Publisher:
ISBN:
Category : Surfaces, Models of
Languages : en
Pages : 192
Book Description
Publisher:
ISBN:
Category : Surfaces, Models of
Languages : en
Pages : 192
Book Description
Experimental Observations of Vortex Ring Interaction with the Fluid Adjacent to a Surface
Author: A. W. Cerra
Publisher:
ISBN:
Category : Flow visualization
Languages : en
Pages : 356
Book Description
Experimental studies examined the breakdown of initially laminar vortex rings during impact with both solid and free surfaces in a quiescent environment, and with a solid surface beneath a developing laminar boundary layer. Flow interactions were visualized in water using dye and hydrogen-bubble techniques and recorded with a high-speed video system. When a vortex ring approaches a surface the resulting flow interaction appears to be chaotic and turbulent, but is actually a very organized viscid-inviscid process which rapidly disperses the vorticity of the vortex ring throughout the surrounding fluid. Described is the flow interaction which integrates the following phenomena: (1) generation of secondary vorticity of opposite sense to that of the vortex ring; (2) deviations in the trajectory of the vortex ring from that predicted by classical theory; and (3) the processes of organized dispersal of vorticity. The process by which vorticity dispersal occurs is dependent upon the initial Reynolds number (Re sub 0) of the vortex ring. For very weak rings, i.e. Re sub o less than 350, vorticity is dispersed by laminar diffusion. For stronger rings, vorticity dispersal occurs discretely through formation of secondary and tertiary vortex rings (SVR and TVR) via a viscous boundary layer process. Vorticity dispersal continues as a result of Biot-Savart-type interactions of the SVR and TVR with the original or primary vortex ring. During this interaction the diameter of the SVR is compressed, causing an instability in the SVR which is characterized by an azimuthal waviness.
Publisher:
ISBN:
Category : Flow visualization
Languages : en
Pages : 356
Book Description
Experimental studies examined the breakdown of initially laminar vortex rings during impact with both solid and free surfaces in a quiescent environment, and with a solid surface beneath a developing laminar boundary layer. Flow interactions were visualized in water using dye and hydrogen-bubble techniques and recorded with a high-speed video system. When a vortex ring approaches a surface the resulting flow interaction appears to be chaotic and turbulent, but is actually a very organized viscid-inviscid process which rapidly disperses the vorticity of the vortex ring throughout the surrounding fluid. Described is the flow interaction which integrates the following phenomena: (1) generation of secondary vorticity of opposite sense to that of the vortex ring; (2) deviations in the trajectory of the vortex ring from that predicted by classical theory; and (3) the processes of organized dispersal of vorticity. The process by which vorticity dispersal occurs is dependent upon the initial Reynolds number (Re sub 0) of the vortex ring. For very weak rings, i.e. Re sub o less than 350, vorticity is dispersed by laminar diffusion. For stronger rings, vorticity dispersal occurs discretely through formation of secondary and tertiary vortex rings (SVR and TVR) via a viscous boundary layer process. Vorticity dispersal continues as a result of Biot-Savart-type interactions of the SVR and TVR with the original or primary vortex ring. During this interaction the diameter of the SVR is compressed, causing an instability in the SVR which is characterized by an azimuthal waviness.
Theory of Concentrated Vortices
Author: S. V. Alekseenko
Publisher: Springer Science & Business Media
ISBN: 3540733760
Category : Technology & Engineering
Languages : en
Pages : 505
Book Description
This book presents comprehensive and authoritative coverage of the wide field of concentrated vortices observed in nature and technique. The methods for research of their kinematics and dynamics are considered. Special attention is paid to the flows with helical symmetry. The authors have described models of vortex structures used for interpretation of experimental data which serve as a ground for development of theoretical and numerical approaches to vortex investigation.
Publisher: Springer Science & Business Media
ISBN: 3540733760
Category : Technology & Engineering
Languages : en
Pages : 505
Book Description
This book presents comprehensive and authoritative coverage of the wide field of concentrated vortices observed in nature and technique. The methods for research of their kinematics and dynamics are considered. Special attention is paid to the flows with helical symmetry. The authors have described models of vortex structures used for interpretation of experimental data which serve as a ground for development of theoretical and numerical approaches to vortex investigation.
Scientific and Technical Aerospace Reports
An Experimental Study of the Effect of Streamwise Vortices on Unsteady Turbulent Boundary-layer Separation
Author: William W. Humphreys
Publisher:
ISBN:
Category :
Languages : en
Pages : 502
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 502
Book Description
Applied Mechanics Reviews
Experimental Study of Vortices Generated by Oscillatory Flow Over Rippled Surfaces
Author: Edward Brant Tunstall
Publisher:
ISBN:
Category : Eddies
Languages : en
Pages : 266
Book Description
Publisher:
ISBN:
Category : Eddies
Languages : en
Pages : 266
Book Description