scholarly journals Particle streak velocity field measurements in a two-dimensional mixing layer

1981 ◽  
Vol 24 (6) ◽  
pp. 995 ◽  
Author(s):  
Paul E. Dimotakis
Keyword(s):  
Velocity Field ◽  
Mixing Layer ◽  
Field Measurements ◽  
Two Dimensional

scholarly journals Two-dimensional ultrasound Doppler velocimeter for velocity field measurements of liquid metal flows

PAMM ◽  
2011 ◽  
Vol 11 (1) ◽  
pp. 649-650
Author(s):  
Sven Franke ◽  
Andreas Fischer ◽  
Lars Büttner ◽  
Jürgen Czarske ◽  
Dirk Räbiger ◽  
...  
Keyword(s):  
Velocity Field ◽  
Liquid Metal ◽  
Field Measurements ◽  
Two Dimensional ◽  
Ultrasound Doppler

scholarly journals Simultaneous concentration and velocity field measurements in a shock-accelerated mixing layer

2014 ◽  
Vol 55 (10) ◽  
Author(s):  
Daniel Reese ◽  
Jason Oakley ◽  
Alonso Navarro-Nunez ◽  
David Rothamer ◽  
Chris Weber ◽  
...  
Keyword(s):  
Velocity Field ◽  
Mixing Layer ◽  
Field Measurements

scholarly journals Energy budget in internal wave attractor experiments

2019 ◽  
Vol 880 ◽  
pp. 743-763 ◽  
Author(s):  
Géraldine Davis ◽  
Thierry Dauxois ◽  
Timothée Jamin ◽  
Sylvain Joubaud
Keyword(s):  
Velocity Field ◽  
Internal Wave ◽  
Boundary Layers ◽  
Energy Budget ◽  
Dissipation Rate ◽  
Theoretical Expression ◽  
Two Dimensional ◽  
Energy Sink ◽  
Set Up ◽  
Different Sources

The current paper presents an experimental study of the energy budget of a two-dimensional internal wave attractor in a trapezoidal domain filled with uniformly stratified fluid. The injected energy flux and the dissipation rate are simultaneously measured from a two-dimensional, two-component, experimental velocity field. The pressure perturbation field needed to quantify the injected energy is determined from the linear inviscid theory. The dissipation rate in the bulk of the domain is directly computed from the measurements, while the energy sink occurring in the boundary layers is estimated using the theoretical expression for the velocity field in the boundary layers, derived recently by Beckebanze et al. (J. Fluid Mech., vol. 841, 2018, pp. 614–635). In the linear regime, we show that the energy budget is closed, in the steady state and also in the transient regime, by taking into account the bulk dissipation and, more importantly, the dissipation in the boundary layers, without any adjustable parameters. The dependence of the different sources on the thickness of the experimental set-up is also discussed. In the nonlinear regime, the analysis is extended by estimating the dissipation due to the secondary waves generated by triadic resonant instabilities, showing the importance of the energy transfer from large scales to small scales. The method tested here on internal wave attractors can be generalized straightforwardly to any quasi-two-dimensional stratified flow.

Restoration of the velocity field of the heart from two-dimensional echocardiograms

1989 ◽  
Vol 8 (2) ◽  
pp. 143-153 ◽  
Author(s):  
G.E. Mailloux ◽  
F. Langlois ◽  
P.Y. Simard ◽  
M. Bertrand
Keyword(s):  
Velocity Field ◽  
Two Dimensional
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