buoyancy force


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buoyancy force

the force due to fluid (liquid or gas) supporting an object, resulting from the different densities of the object and the fluid. Usually acts upwards. Also known as upthrust. See also centre of buoyancy.
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In other words, the vehicle could not move in the vertical direction even if the buoyancy force from the water acted on the vehicle.
When Ma=0, only natural convection due to buoyancy force is dominated on the fluid motion.
From (4), it could be found that recoil pressure, surface tension, and buoyancy force were influenced by temperatures of the molten pool.
In addition, the research has pinpointed the buoyancy force applied from the life jacket as the main factor for the injuries during water entry technique.
Subject to dynamic change of boundary temperature, the buoyancy force approximated by the Boussinesq model (the third term on the right hand side of Eq.
The effects of buoyancy force strengthens relative to the viscous force with increasing [Ra.
The integral characteristics for the dummy were calculated by the direct integration of the measured values of air speed and air temperature excess, and subsequently, the characteristics were reduced to 75% for volume flux, to 68% for momentum flux, to 85% for buoyancy force density, and to 89% for enthalpy flux to obtain the same proportions as for the integral characteristics in the manikin plume calculated by the ADI method and the direct integration method.
This is because the buoyancy force works against the fluid flow and therefore heat transfer process is retarded.
The variation of u with buoyancy ratio parameter N shows that when the molecular buoyancy force dominates over the thermal buoyancy force [absolute value of u] experiences an enhancement irrespective of the directions of the buoyancy forces (fig.
Gravity is applied in the entire domain and it results in a gradient in the hydrostatic pressure, which induces the buoyancy force on the bubble.