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Keywords: drops
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Journal Articles
Article Type: Research Papers
J. Fluids Eng. December 2011, 133(12): 121303.
Published Online: December 23, 2011
... of the recess length l R , it is shown that the spray cone angle and the drop size decrease as l R increases. 06 02 2011 12 10 2011 23 12 2011 23 12 2011 Fig. 3 shows the evolution of the overall spray characteristics according to the momentum flux ratio M ( = ρ g u...
Journal Articles
Article Type: Technical Briefs
J. Fluids Eng. November 2011, 133(11): 114501.
Published Online: October 13, 2011
... the governing equations of a viscous liquid jet. The results predict the evolution and breakup of the liquid jet, the growth rate of disturbance, the breakup time and location, and the main and satellite drop sizes. It is found that the predicted growth rate of disturbance, the breakup time, and the main...
Journal Articles
Article Type: Research Papers
J. Fluids Eng. October 2011, 133(10): 101208.
Published Online: October 5, 2011
...T. F. Oliveira; F.R. Cunha This theoretical work shows how the knowledge of the emulsion microscale, including drop stretching and orientation leads to a continuum description of emulsion flows. A first order small deformation theory is explored for describing the rheology of an emulsion of high...
Journal Articles
Article Type: Research Papers
J. Fluids Eng. October 2011, 133(10): 101205.
Published Online: October 4, 2011
... tension serves to get finer droplets and wider droplet spatial distribution. Small liquid density, surface tension and viscosity are benefit for getting higher atomized droplet velocity. 07 10 2009 14 05 2011 04 10 2011 04 10 2011 drops Navier-Stokes equations sprays surface...
Journal Articles
Article Type: Technical Briefs
J. Fluids Eng. September 2011, 133(9): 094501.
Published Online: September 8, 2011
... of the results with respect to the fineness of mesh is developed with special emphasis on the influence of the nondimensional sub-layer scaled distance. The coefficient of pressure drop and the droplet collection efficiency are numerically calculated. It may be concluded that using the GCI method leads...
Journal Articles
Article Type: Research Papers
J. Fluids Eng. August 2011, 133(8): 081302.
Published Online: August 23, 2011
... the secondary-drop-breakup region. To simulate these multiscale free surfaces, we developed a method that combines two types of simulation. The liquid-film breakup near the injector outlet was simulated by using a particle method, and the secondary-drop breakup after the liquid-film breakup was simulated...
Journal Articles
Article Type: Research Papers
J. Fluids Eng. July 2011, 133(7): 071301.
Published Online: July 5, 2011
... Eggers , J. and Dupont , T. F. , 1994 , “ Drop Formation in a One Dimensional Approximation of the Navier Stokes Equation ,” J. Fluid Mech. , 262 , pp. 205 – 221 . 10.1017/S0022112094000480 21 Setiawan , E. R. and Heister , S. D. , 1997 , “ Nonlinear Modeling...
Journal Articles
Article Type: Technical Briefs
J. Fluids Eng. April 2011, 133(4): 044503.
Published Online: May 12, 2011
...Alexander G. Bick; William D. Ristenpart; Ernst A. van Nierop; Howard A. Stone We recently discovered that bubble formation can be substantially prevented when an aqueous solution is sprayed into a bath of the same solution provided that any two consecutive drops impacting the same surface location...
Topics: Nozzles, Bubbles
Journal Articles
Article Type: Research Papers
J. Fluids Eng. March 2011, 133(3): 031303.
Published Online: March 16, 2011
...S. Mortazavi; Y. Afshar; H. Abbaspour The motion of deformable drops suspended in a linear shear flow at nonzero Reynolds numbers is studied by numerical simulations in two dimensions. It is found that a deformable drop migrates toward the center of the channel in agreement with experimental...
Journal Articles
Article Type: Research Papers
J. Fluids Eng. March 2011, 133(3): 031301.
Published Online: March 15, 2011
... confined flow drops jets nozzles sprays two-phase flow sprays numerical modeling nozzle atomization particle number density Many industrial processes utilize liquid sprays due to their high surface area to volume ratio. Whether it is to quickly deliver a reagent into the reaction...
Journal Articles
Article Type: Research Papers
J. Fluids Eng. December 2010, 132(12): 121402.
Published Online: December 22, 2010
... the momentum transfer between the gas phase and the liquid droplet. In this paper, the droplet size distribution in gas-liquid annular flow is studied using a numerical approach. annular flow multiphase flow population balance size distribution computational fluid dynamics drops flow...
Journal Articles
Article Type: Research Papers
J. Fluids Eng. October 2010, 132(10): 101302.
Published Online: October 20, 2010
...A. Dechelette; P. E. Sojka; C. R. Wassgren The objective of this study is to develop a computational model that accurately describes the dynamic behavior of a non-Newtonian power-law film formed after a drop impinges on a flat surface. The non-Newtonian drop deposition and spreading process...
Journal Articles
Article Type: Research Papers
J. Fluids Eng. June 2010, 132(6): 061402.
Published Online: June 23, 2010
...Ariel R. Muliadi; Paul E. Sojka; Yudaya R. Sivathanu; Jongmook Lim The goal of this study was to determine when patternation information derived from Phase Doppler Analyzer (Dantec Dynamics, Skovlunde, Denmark, dual-PDA) measurements of volume flux, drop velocity, and mean size agreed...
Topics: Sprays, Drops
Journal Articles
Article Type: Research Papers
J. Fluids Eng. June 2010, 132(6): 061302.
Published Online: June 15, 2010
... dissipation in spontaneous spreading and the other one is for viscous dissipation of the initial kinetic energy of the droplet. The new model satisfies the fundamental physics of drop-surface interaction and can be used for droplets impacting on solid surfaces with or without initial kinetic energy...
Journal Articles
Article Type: Research Papers
J. Fluids Eng. March 2010, 132(3): 031301.
Published Online: March 17, 2010
.... This means that we can simulate droplet sizes of the field application. The fact that it concerns only 0.5% of our total injected mist volume explains why a relatively large number of nozzles (28) are needed. 26 05 2009 05 01 2010 17 03 2010 17 03 2010 centrifuges drops flow...
Journal Articles
Article Type: Research Papers
J. Fluids Eng. February 2010, 132(2): 021301.
Published Online: January 28, 2010
..., inlet and outlet unsteady pressures, and pump rotation velocity enable to characterize the pump behavior during rapid starting periods. Three different types of fast startup behaviors have been identified. According to the final operating point, the startup is characterized either by a single drop...
Journal Articles
Article Type: Research Papers
J. Fluids Eng. September 2009, 131(9): 091203.
Published Online: August 18, 2009
.... In such a process, curved liquid jets produced by rotating a perforated cylindrical drum are utilized to control drop sizes and breakup lengths. In general, smaller droplets are observed as the rotation rate is increased. The addition of surfactants along the free surface of the liquid jet as it emerges from...
Journal Articles
Article Type: Research Papers
J. Fluids Eng. August 2009, 131(8): 081301.
Published Online: July 7, 2009
...R. Shukla; K. A. Sallam An experimental investigation of the role of liquid transparency in controlling laser-induced motion of liquid drops is carried out. The study was motivated by application to manipulation of liquid drops over a solid substrate. Droplets with diameters of 1–4 mm were...
Journal Articles
Article Type: Research Papers
J. Fluids Eng. April 2009, 131(4): 041201.
Published Online: March 6, 2009
... theory describes the main characteristics of the flow very well. 28 07 2006 31 01 2008 06 03 2009 drops flow simulation mass transfer nozzles numerical analysis pipe flow two-phase flow vortices Laval nozzle vortex flow natural gas Condi-Cyclone The behavior...
Journal Articles
Article Type: Research Papers
J. Fluids Eng. February 2009, 131(2): 021301.
Published Online: January 9, 2009
...Ritu Gupta; R. K. Wanchoo The shape of a single Newtonian liquid drop moving freely under gravity in quiescent non-Newtonian liquid (visco-inelastic and visco-elastic) has been studied. Strong effect of fluid elasticity on the shape of Newtonian liquid drop has been observed. Based on experimental...