منابع مشابه
Equilibrium Conditions for the Floating of Multiple Interfacial Objects
We study the effect of interactions between objects floating at fluid interfaces, for the case in which the objects are primarily supported by surface tension. We give conditions on the density and size of these objects for equilibrium to be possible and show that two objects that float when well-separated may sink as the separation between the objects is decreased. Finally, we examine the equi...
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More than one third of the world’s irrigated areas suffer occasional or more frequent waterlogging (Donmann and Houston, 1967). Waterlogging has been shown to limit wheat yields in many regions of the world; an area estimated at 10 million ha is waterlogged each year in developing countries (Sayre et al., 1994). Waterlogging occurs when rainfall or irrigation water collects on the soil surface ...
متن کاملSimulation of Floating Objects in Free-Surface Flows
In this thesis a model for the simulation of floating objects on free surfaces is presented. Free surfaces arise at the transition between two fluids with a large density difference, e.g. between water and air. This effect is important for a lot of technical applications, such as metal foaming or molding. Fluid flows around obstacles or flows involving solid bodies is a phenomenon, of equally n...
متن کاملControlled Magnetic Propulsion of Floating Polymeric Two-Dimensional Nano-Objects
Soft-bodied magnetically actuated microrobots could be developed by including controlled dispersions of magnetic nanoparticles into polymeric micro-fabricated structures. The characterization and actuation of magnetically active soft-bodied microrobots by tailored magnetic fields is, thus, a key issue for the design, full control and further development of these mobile micro-systems. In this wo...
متن کاملDifferential Sensitivity to Waterlogging
Screening for tolerance of additional seedling types was continued on a reduced scale. J. nigra seedlings from 3 sources were no different than those of J. hindsii. ~. californica seedlings (1 source) had slightly greater average tolerance than those of J. hindsii. Single comparisons indicated no difference between J. honorei and J. hindsii and only a suggestion that 11anregian seedlings (1 sou...
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ژورنال
عنوان ژورنال: Journal of Fluid Mechanics
سال: 2007
ISSN: 0022-1120,1469-7645
DOI: 10.1017/s002211200700715x