Results 211 to 220 of about 153,851 (265)
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Free Surface, Velocity Gradient Flow Past Hemisphere
Journal of the Hydraulics Division, 1970The drag on a hemisphere in a finite-flow field with free surface effects is evaluated by successively studying six flow fields, which allows the study of one new variable at a time. These flow fields are: the semi-infinite uniform and nonuniform flow fields, the finite uniform and nonuniform flow fields without free surface effects, and the finite ...
Gordon H. Flammer +2 more
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Surface velocity of a flowing surfactant solution
Journal of Colloid and Interface Science, 1979Abstract An aqueous sodium dodecyl sulfate solution (at concentrations exceeding the CMC and containing variable amounts of tetradecanol as a minor component) is forced to flow in a canal under the influence of a hydrostatic pressure gradient. Two barriers, spanning the canal, are brought at the air-water surface.
R.Van Den Bogaert, P Joos
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Influence of endothelial surface on flow velocity in vitro
American Journal of Physiology-Heart and Circulatory Physiology, 1993The influence of the endothelial surface and its interaction with various plasma components on flow velocity was investigated in vitro. The falling velocity of microcarrier beads with and without cultured porcine aortic endothelial cells in a vertical tube containing different media was recorded with a video system attached to a light microscope.
W H, Reinhart +4 more
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Measurement of free-surface flow velocity using controlled surface waves
Flow Measurement and Instrumentation, 2005The paper describes a non-intrusive velocity measurement method that innovatively combines image velocimetry and fluid mechanics principles to determine the free-surface velocity of a moving liquid. Controlled surface waves are generated at the surface of open-channel channel flows.
Muste, Marian +2 more
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Velocity distribution in decelerating flow over rough surfaces
Canadian Journal of Civil Engineering, 2002An experimental program was undertaken to study turbulent boundary layers formed in decelerating open channel flows. The flows over a smooth surface and three rough surfaces were examined. Tests were conducted at a subcritical Froude number (~0.2) and varying depth Reynolds numbers (64 000 < Red < 88 000).
R Balachandar, K Hagel, D Blakely
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Evaluation of the tablets’ surface flow velocities in pan coaters
European Journal of Pharmaceutics and Biopharmaceutics, 2016The tablet pan coating process involves various types of transverse tablet bed motions, ranging from rolling to cascading. To preserve satisfactory results in terms of coating quality after scale-up, understanding the dynamics of pan coating process should be achieved.
Rok, Dreu +6 more
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Velocity distribution in a gradually accelerating free surface flow
Advances in Water Resources, 2006This study investigates the interaction of the vertical velocity v and the streamwise velocity u in a gradually accelerating flow. The analytical result shows that the momentum of uv driven by the mean velocities in a non-uniform flow is not negligible.
Shu-Qing Yang, Wei-Lin Xu, Guo-Liang Yu
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Velocity circulations in free-surface flows
International Journal of Engineering Science, 1996Abstract The equations of balance between horizontal and vertical accelerations on a free surface are derived from the Euler equations for vertical flows with arbitrary distribution of density. From these equations it follows that the velocity circulations on a free surface are invariants of motion.
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