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Title: Fundamental Studies of Fluid Mechanics: Stability in Porous Media

We summarize our research results in three main areas: coating flows; electrohydrodynamics of drops; and wetting and spreading of drops. Experimental, computational and analytical methods are used to address a variety of issues. Coating flow studies include the effect of roughness, surfactants, and adsorbed particles on the dynamics of dip-coating. Electrohydrodynamic studies include drop deformation in uniform electric fields, shape distortion due to charge convection in sedimenting drops, and driving chaotic advection by either an electric field inclined to the direction of drop motion or time-periodic changes in the direction of the electric field. Heat and mass transport from chaotically mixed droplets exhibit unexpected and remarkable increases in the rates of transport. Finally, we develop an analytical solution to the problem of a static droplet, and use numerical techniques to predict its migration due to surface tension gradients.
  1. University of California, Santa Barbara
Publication Date:
OSTI Identifier:
Report Number(s):
DOE Contract Number:
Resource Type:
Technical Report
Research Org:
The Regents of the University of California, Santa Barbara
Sponsoring Org:
USDOE Office of Science (SC)
Country of Publication:
United States
42 ENGINEERING; 97 MATHEMATICS AND COMPUTING; 02 PETROLEUM fluid mechanics; coating flows; drops; heat and mass transfer; chaotic advection; mixing; electrohydrodynamics; wetting