Experimental study of the internal flow structures inside a fluidic oscillator

An experimental study is made of natural convection oscillations in gallium melts enclosed by right circular cylinders with differentially heated end walls. Cases heated from below are examined for angles of inclination (φ) ranging from 0 deg (vertical) to 75 deg with aspect ratios Ar (height/diameter) of 2, 3, and 4. Temperature measurements are made along the circumference of the cylinder to detect the oscillations, from which the oscillatory flow structures are inferred. The critical Rayleigh numbers and oscillation frequencies are determined. For Ar=3 and φ = 0 deg, 30 deg the supercritical flow structures are discussed in detail.

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Numerical and Experimental Study of an Internal Flow in a Tiny Droplet Under the Vibrating Field

Nihon Reoroji Gakkaishi ◽

10.1678/rheology.44.137 ◽

2016 ◽

Vol 44 (3) ◽

pp. 137-141

Author(s):

Satoko Yamauchi ◽

Shuichi Iwata ◽

Yumiko Yoshitake ◽

Ryo Nagumo ◽

Hideki Mori ◽

...

Keyword(s):

Experimental Study ◽

Internal Flow

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Experimental study of coherent flow structures past a wall-mounted square cylinder

Ocean Engineering ◽

10.1016/j.oceaneng.2019.04.043 ◽

2019 ◽

Vol 182 ◽

pp. 137-146 ◽

Cited By ~ 9

Author(s):

Maria Ikhennicheu ◽

Grégory Germain ◽

Philippe Druault ◽

Benoît Gaurier

Keyword(s):

Experimental Study ◽

Flow Structures ◽

Square Cylinder ◽

Coherent Flow Structures

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Probe Into Internal Flow Structures of a Ventilated Supercavity

Proceedings of the 10th International Symposium on Cavitation (CAV2018) ◽

10.1115/1.861851_ch168 ◽

2018 ◽

pp. 885-890

Keyword(s):

Internal Flow ◽

Flow Structures ◽

Ventilated Supercavity

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An experimental study on flow structures of a single bubble rising in a shear-thinning viscoelastic fluid with a new measurement technique

International Journal of Multiphase Flow ◽

10.1016/j.ijmultiphaseflow.2004.11.004 ◽

2005 ◽

Vol 31 (2) ◽

pp. 239-252 ◽

Cited By ~ 10

Author(s):

Tsao-Jen Lin ◽

Gen-Ming Lin

Keyword(s):

Experimental Study ◽

Viscoelastic Fluid ◽

Measurement Technique ◽

Shear Thinning ◽

Single Bubble ◽

Flow Structures ◽

Bubble Rising

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An Examination of Flow Regimes Associated With Inkjet-Printed Colloidal Drops

Volume 6: Electronics and Photonics ◽

10.1115/imece2008-68877 ◽

2008 ◽

Cited By ~ 2

Author(s):

Vadim Bromberg ◽

Sailee Gawande ◽

Ying Sun ◽

Timothy Singler

Keyword(s):

Experimental Study ◽

Radial Flow ◽

Internal Flow ◽

Flow Regimes ◽

Solid Substrate ◽

Marangoni Flow ◽

Single Group ◽

Evaporation Dynamics

An experimental study of the evaporation dynamics for an inkjet-printed drop on a solid substrate has been attempted. Using fluorescent spherical colloids, the internal flow of an evaporating drop has been observed directly. During the initial stages of the process, a novel inward radial flow carries the particles as a single group towards the center of the drop. Once the particles have converged near the center, a significantly slower outward radial flow proceeds. These flow regimes are qualitatively analyzed and their relationship to a possible thermal Marangoni flow is discussed.

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