نتایج جستجو برای: buoyancy ratio
تعداد نتایج: 506577 فیلتر نتایج به سال:
Foraging theory predicts that breath-hold divers adjust the time spent foraging at depth relative to the energetic cost of swimming, which varies with buoyancy (body density). However, the buoyancy of diving animals varies as a function of their body condition, and the effects of these changes on swimming costs and foraging behaviour have been poorly examined. A novel animal-borne accelerometer...
Abstract This paper investigates the growth dynamics of a vapor-gas bubble pressed against heating plate by buoyancy force. The shadow method was used to capture images, which were then automatically processed calculate size bubble. As expected, significantly depends on power. It found that ratio diameter height increases as it grows.
The employment of gliding in aquatic animals as a means of conserving energy has been theoretically predicted and discussed for decades. Several studies have shown that some species glide, whereas others do not. Freshwater fish species that widely inhabit both lentic and lotic environments are thought to be able to adapt to fluctuating flow conditions in terms of locomotion. In adapting to the ...
We examine, as a function of depth, the relationship between a tectonic regionalization and upper-mantle shear-wave heterogeneity represented by a recent seismic tomographic model. We perform Monte Carlo simulations that incorporate the spectral properties of both the regions and the seismic signal. Our results indicate that ridges can be readily distinguished from older oceans to a depth of ab...
Laminar natural convection flow and heat transfer of a viscous incompressible fluid confined between two long vertical wavy walls has been analysed taking the fluid properties constant and variable. In particular, attention is restricted to estimate the effects of viscous dissipation and wall waviness on the flow and heat transfer characteristics. Use has been made of a llnearlzatlon technique ...
Considering the increase in number of offshore oil production projects and for better understanding of plume dynamics in accidental underwater oil blowouts, a series of laboratory experiments in a square cross section open top basin were carried out to investigate the effect of changes in seawater stratification and water column stability on plume dynamics and peeling height. Accordingly the o...
Buoyancy inhomogeneities on sloping surfaces arise in numerous situations, for example, from variations in snow/ice cover, cloud cover, topographic shading, soil moisture, vegetation type, and land use. In this paper, the classical Prandtl model for one-dimensional flow of a viscous stably stratified fluid along a uniformly cooled sloping planar surface is extended to include the simplest type ...
1463-5003/$ see front matter 2009 Elsevier Ltd. A doi:10.1016/j.ocemod.2009.06.014 * Corresponding author. Address: Climate and National Center for Atmospheric Research, Boulder, C 303 497 17 21. E-mail address: [email protected] (S.G. Yeager). The sensitivity of the North Atlantic gyre circulation to high latitude buoyancy forcing is explored in a global, non-eddy resolving ocean general circula...
The study sought to investigate thermosolutal convection and stability of two dimensional disturbances imposed on a heated boundary layer flow over a semi-infinite horizontal plate composed of a chemical species using a self-consistent asymptotic method. The chemical species reacts as it diffuses into the nearby fluid causing density stratification and inducing a buoyancy force. The existence o...
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