scholarly journals Ultrasonic Measurement of Two-Dimensional Liquid Velocity Profile Using Two-Element Transducer

2022 ◽  
Vol 10 (01) ◽  
pp. 12-31
Author(s):  
Hiroshige Kikura ◽  
Naruki Shoji ◽  
Hideharu Takahashi ◽  
Wongsakorn Wongsaroj
Keyword(s):  
Velocity Profile ◽  
Liquid Velocity ◽  
Ultrasonic Measurement ◽  
Two Dimensional

Effects of inflow velocity profile on two-dimensional hemodynamic analysis by ordinary and ultrasonic-measurement-integrated simulations

2015 ◽  
Vol 54 (9) ◽  
pp. 1331-1339 ◽  
Author(s):  
Takaumi Kato ◽  
Shusaku Sone ◽  
Kenichi Funamoto ◽  
Toshiyuki Hayase ◽  
Hiroko Kadowaki ◽  
...  
Keyword(s):  
Velocity Profile ◽  
Ultrasonic Measurement ◽  
Two Dimensional ◽  
Inflow Velocity

Simulation of Fluid Flow in a Microchannel at Low Reynolds Number Using Dissipative Particle Dynamics

2018 ◽  
Author(s):  
Waqas Waheed ◽  
Anas Alazzam ◽  
Ashraf N. Al Khateeb ◽  
Eiyad Abu Nada
Keyword(s):  
Reynolds Number ◽  
Fluid Flow ◽  
Velocity Profile ◽  
Drag Coefficient ◽  
Dissipative Particle Dynamics ◽  
Particle Dynamics ◽  
Published Data ◽  
Two Dimensional ◽  
Close Match ◽  
Good Agreement

In this paper, a two-dimensional Dissipative Particle Dynamics (DPD) technique to simulate the poiseuille flow in a microchannel is developed using an in-house code. The calculated Reynolds number is reduced via adjusting the DPD parameters. The obtained velocity profile is compared with the analytical results and a good agreement is found. The drag force and the drag coefficient on a stationary cylinder exerted by the fluid particles are obtained using the developed DPD code. The calculated drag coefficient exhibits a close match with already published data in the literature.

Stability of a compressible two-dimensional vortex under a three-dimensional perturbation

1984 ◽  
Vol 392 (1803) ◽  
pp. 279-299 ◽  
Keyword(s):  
Mach Number ◽  
Velocity Profile ◽  
Incompressible Flow ◽  
Compressible Fluid ◽  
Three Dimensional ◽  
Critical Value ◽  
Two Dimensional ◽  
Rankine Vortex ◽  
The Core ◽  
Critical Boundary

Kelvin showed that a two-dimensional vortex under a two-dimensional disturbance in incompressible flow responds at a discrete set of eigenvalues, which were found by Broadbent & Moore ( Phil. Trans. R. Soc. Lond. A 290, 353-371 (1979) to become unstable in a compressible fluid. It is now shown that three-dimensional perturbations are also unstable provided the wavelength is greater than some critical value that depends on the Mach number of the vortex. A critical boundary dividing stable from unstable modes is defined. Most of the results relate to a Rankine vortex, as in the previous work mentioned above, but some results are also given for a vortex with a different velocity profile within the core; qualitatively the same kind of behaviour is found.

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