Results 71 to 80 of about 61,839 (207)

Computational fluid dynamics applied to gas-liquid contactors. [PDF]

, 1997
In this paper a `hierarchy of models¿ is discussed to study the fluid dynamic behaviour of gas-liquid bubble columns. This `hierarchy of models¿ consists of a Eulerian-Eulerian two fluid model, a Eulerian-Lagrangian discrete bubble model and a Volume ...
Delnoij, E., Kuipers, J.A.M., Swaaij, W.P.M. van   +2 more
core   +3 more sources

Objective speckle displacement resulting from the deformation of shaped objects [PDF]

, 2015
This paper describes an extended theory of the displacement of the objective speckle pattern resulting from displacement and/or deformation of a coherently illuminated diffuse object where the influence of the surface shape is included via the linear ...
Charrett, Thomas O. H., Tatam, Ralph P.
core   +1 more source

An Optical Flow Algorithm with Automatic Parameter Adjustment for Fluid Velocimetry

Journal of Open Research Software
Particle image velocimetry is a standard non-intrusive experimental fluid mechanics technique that is used for determining fluid flow velocities quantitatively.
Gauresh Raj Jassal, William Thielicke, Bryan E. Schmidt   +2 more
doaj   +1 more source

Estimation of myocardial deformation using correlation image velocimetry

BMC Medical Imaging, 2017
Background Tagged Magnetic Resonance (tMR) imaging is a powerful technique for determining cardiovascular abnormalities. One of the reasons for tMR not being used in routine clinical practice is the lack of easy-to-use tools for image analysis and strain
Athira Jacob, Ganapathy Krishnamurthi, Manikandan Mathur   +2 more
doaj   +1 more source

Experimental study on solids circulation patterns and bubble behavior using particle imagevelocimetry combined with digital image analysis [PDF]

, 2008
The hydrodynamics, viz. the solids circulation patterns and\ud bubble behavior, of a freely bubbling gas-solid fluidized bed\ud has been investigated experimentally using Particle Image\ud Velocimetry (PIV) combined with Digital Image Analysis\ud (DIA ...
Kuipers, J.A.M., Laverman, J.A., Roghair, Ivo, Sint Annaland, M. van   +3 more
core   +1 more source

Particle image velocimetry

, 1993
This document describes the development of a new flow visualization and measurement facility that incorporates a sheet of laser light and digital image enhancement and processing techniques. A simple bench test that was used to demonstrate the feasibility of such techniques is also described.
openaire   +3 more sources

Mapping River Flow from Thermal Images in Approximately Real Time: Proof of Concept on the Sacramento River, California, USA

Remote Sensing
Image velocimetry has become an effective method of mapping flow conditions in rivers, but this analysis is typically performed in a post-processing mode after data collection is complete.
Carl J. Legleiter, Paul J. Kinzel, Michael Dille, Massimo Vespignani, Uland Wong, Isaac Anderson, Elizabeth Hyde, Chris Gazoorian, Jennifer M. Cramer   +8 more
doaj   +1 more source

VISUALISATION AND ANALYSIS OF THE FLUID FLOW STRUCTURE INSIDE AN ELLIPTICAL STEELMAKING LADLE THROUGH IMAGE PROCESSING TECHNIQUES [PDF]

Journal of Engineering Science and Technology, 2007
The understanding of the fluid flow conditions during the liquid steel stirring treatment in the ladle is an important issue to optimize the steelmaking process.
R.P. NUNES, J.A.M. PEREIRA, A.C.F. VILELA, F.T.V. DER LAAN   +3 more
doaj  

Some comments on particle image displacement velocimetry [PDF]

Laser speckle velocimetry (LSV) or particle image displacement velocimetry, is introduced. This technique provides the simultaneous visualization of the two-dimensional streamline pattern in unsteady flows as well as the quantification of the velocity ...
Lourenco, L. M.
core   +1 more source

OF-PhyNet: A Hybrid Neural Network Method for River Surface Velocity Measurement Based on Optical Flow and Physical Constraints

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Measuring river surface velocity is crucial for hydrological monitoring. However, traditional methods exhibit significant limitations under extreme weather conditions and emergency scenarios.
Minghu Zhang, Lianpo Ma, Yingying Chen, Xin Li   +3 more
doaj   +1 more source