Results 221 to 230 of about 153,851 (265)

Velocity Boundary Conditions for the Simulation of Free Surface Fluid Flow

Journal of Computational Physics, 1994
Abstract Accurate velocity boundary conditions are critical to the successful simulation of free surface fluid flow. It is shown in this paper that previous approaches for the assignment of free surface velocity boundary conditions in marker and cell methods artificially introduce asymmetry and can even cause the simulation to break ...
Chen, Shea, Johnson, David B., Raad, Peter E.   +2 more
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Generalized Crane flow induced by continuous surfaces stretching with arbitrary velocities

Acta Mechanica, 2009
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Weidman, Patrick D., Magyari, E.
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Fusion and mining of glacier surface flow velocity time series

2020
<p>Glacier response to climate change results in natural hazards, sea level rise and changes in freshwater resources. To evaluate this response, glacier surface flow velocity constitutes a crucial parameter to study. Nowadays, more and more velocity maps at regional or global scales issued from satellite SAR and/or optical images
Charrier, Laurane, Yan, Yajing, Koeniguer, Elise, Trouvé, Emmanuel, Millan, Romain, Mouginot, Jérémie, Derkacheva, Anna   +6 more
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Surface velocity computation of debris flows by vector field measurements

Physics and Chemistry of the Earth, Part B: Hydrology, Oceans and Atmosphere, 2000
Abstract The surface velocity of natural debris flows is one of the main physical parameters for developing effective disaster prevention techniques. The authors already presented the result of velocity vector field measurement of debris flow by the spatio temporal derivative space method.
H. Inaba, Y. Itakura, M. Kasahara
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Explicit Velocity for Modelling Surface Complex Flows with Cellular Automata and Applications

2006
Fluid-dynamics is an important field of Cellular Automata applications, that give rise also to specialised models as lattice gas automata and lattice Boltzmann models. These models come up against difficulties for applications to large scale (kilometres) phenomena. Our research group Empedocles faces up to macroscopic phenomena concerning surface flows,
AVOLIO MV, CRISCI GM, D'AMBROSIO D, DI GREGORIO S, IOVINE G, LUPIANO V, RONGO, Rocco, SPATARO W, TRUNFIO A.   +8 more
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Surface heat flow and Pn velocity distribution in Peninsular India

Journal of Geodynamics, 1991
Abstract A correlation study among Pn velocity distribution, surface heat flow and other related thermal parameters for Southern Indian Shield reveals that Pn velocity decreases significantly in the regions where regional heat flow and Moho temperatures are high. These areas are associated with shallow Curie depth and thin lithosphere.
S.R. Sharma, A. Sundar, V.K. Rao, D.V. Ramana   +3 more
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Velocity vorticity vector behavior in supersonic flows behind discontinuity surfaces

Thermophysics and Aeromechanics, 2007
The behavior of the velocity vorticity vector on a discontinuity surface arising in the supersonic non-uniform flow of combustible gas around a body with the formation of a shock or detonation wave is studied. The free stream is generally vortical and has a given distribution of parameters.
V. A. Levin, G. A. Skopina
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Velocity measurements on highly turbulent free surface flow using ADV

Experiments in Fluids, 2007
The 3D instantaneous velocity recorded with an acoustic Doppler velocimeter (ADV) in a highly turbulent free surface flow is analysed using several filters in order to eliminate the corrupted data from the sample. The filters used include the minimum/maximum threshold, the acceleration threshold, and the phase-space threshold.
L. Cea, J. Puertas, L. Pena
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Eulerian velocity measurements of hydrodynamic surfaces using optical flow methods

International Journal of Remote Sensing, 1985
Abstract Optical flow methods are a recent technological merger of numerical modelling and remote sensing/image processing techniques, used to derive an estimate of an Eulerian flow field for some hydrodynamic surface. Flow determinations are based on spatial and temporal tracer gradients, derived from time sequential remotely sensed data. A well-posed
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Temperature and velocity fields due to surface tension driven flow

Experiments in Fluids, 1988
Temperature and velocity fields near an air-bubble in silicon-oil under a heated horizontal wall were investigated. The studies were made with silicon oils of different viscosities so that a wide range of Marangoni numbers was encountered. Schlieren interferograms were taken to analyse the temperature field.
D. Raake, J. Siekmann, C. -H. Chun
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