Sliding bubble motion, velocity and shape [68]
Streamwise vorticity in the wake of a sliding bubble
... a Sliding Bubble ...a bubble sliding underneath an inclined surface is common to two-phase flow systems such as shell and tube heat exchangers, mineral flotation and oxidation in water ...air ...
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Visualization of the wake behind a sliding bubble
... of sliding bubble based cooling ...larger bubble size, although the maximum values are transient due to the rapidly fluctuating convective heat flux, which was also observed numerically by Kim et ...
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Sliding bubble dynamics and the effects on surface heat transfer
... the bubble enhanced heat transfer coefficient to that of natural ...for bubble volumes of ...the velocity vector and bubble path. The bubble boundary is superimposed on the images along ...
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Motion of a confined bubble in a shear-thinning liquid
... a bubble confined in a horizontal planar channel that advances through a shear-thinning fluid as sketched in figure ...The bubble is assumed inviscid and translates at a steady velocity U while, far ...
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Dynamics of shape oscillations of a bubble attached to a capillary tip
... OF BUBBLE OSCILLATIONS The bubble oscillations are studied in an experimental setup, which is schematized in Figure ...A bubble grows slowly on a moveable glass capillary and its size is controlled ...
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Modelling of Vertical Wall Influence on the Single Bubble Motion
... angular velocity causes that ...i.e. velocity profile and void fraction ...typical bubble diffusion equation, shows that in case of presence of void fraction maximum, D, the sign change of its ...
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Liquid velocity field measurements during bubble formation and detachment at an orifice
... preceding bubble is to generate an upflow above the growing ...preceding bubble is negligible, it can be seen that the liquid flow field generated by the preceding bubble affects the shape and ...
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Plasma bubble zonal velocity variations with solar activity in the Brazilian region
... plasma bubble and the background plasma drift with the same zonal ...reduced motion), and its structure becomes strongly coupled to the zonal drifts (Martinis et ...a velocity drop from ...
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Flow visualisation and wake characterisation of a sliding bubble using particle image velocimetry
... the bubble (vapour bubbles only), as well as the interaction of the bubble and its accompanying wake with the thermal boundary ...the bubble acts as a bluff body, increasing the heat transfer to the ...
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Unsteady motion of a long bubble or droplet in a self-rewetting system
... unsteady motion of a long bubble or droplet in a self-rewetting system in a non-uniformly heated tube due to a combination of Marangoni effects due to the variation of surface tension with temperature, ...
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Analysis of quasi static vapour bubble shape during growth and departure
... vapour bubble growth, an uncomplicated apparatus is built in which a single right angle needle tip provides the nucleation site for bubble ...cross-sectional bubble images throughout the growth ...
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Bubble shape and breakage events in a vertical pipe at the boiler flow line
... 4. Bubble aspect ratio in vertical pipe flow at boiler exit with system pressure (abs) (Experiment II in Table ...the bubble elongation was evident with a shift in the bulk fluid velocity represented ...
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Effect of gas expansion on the front shape of a Taylor bubble: an experimental contribution
... The PIV+PS experiments were repeated 15 times to have representative vector maps in the liquid. The PS experiments were repeated 3 to 5 times for each experimental condition which represents 2 × 3 to 2 × 5 images ...
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Sliding-Mode control for high-precision motion control systems
... using Sliding-Mode Control There is no unique solution to different control ...as velocity, can be measured or estimated are also key ...in velocity may possibly result in very inaccurate ...
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Numerical Study of Bubble Separation and Motion Using Lattice Boltzmann Method
... According to effects of surface tension between two fluids, the bubble tends to change to steady state with the lowest interface. According to simulation results shown in Figure 1, bubble shape has ...
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Response Predictions for Sliding Isolation Bearings Considering the Effects of Temperature and Velocity on Friction
... of velocity, axial pressure and temperature at the sliding interface on the coefficient of friction should be able to update the coefficient of friction at every step of the ...vertical motion due to ...
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Calculation of lateral velocity estimation and error discrimination for railway wheelset to avoid sliding
... In Fig. 1, when coefficient of the creep is taken ad 6e+7 as the higher value, it is observed that the lateral velocity of the railway wheelset moves with motion slightly above 0.02 meter/s initially to ...
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CHAPTER 5 ANALYSIS OF THE BUBBLE SCREEN FLOW FIELD IN FLOWING WATER. In order to describe the bubble screen shape in flowing water,
... A bubble screen installed at a marina entrance can stop further propagation of surface pollution and can be an efficient filter for pollutants in suspension and bed ...the bubble screen is the low energy ...
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Underwater Landslide Shape, Motion, Deformation, and Tsunami Generation
... maximum velocity depends on landslide ...this velocity provides an instantaneous Froude number of unity ...maximum velocity result along with the work of Ben- Menahem and Rosenman (1972) as well as ...
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Analysis of Motion Velocity in Ultrasound Images
... traditional motion estimation techniques that have been introduced are based on the optical flow and block-matching ...the motion velocity displacement point in the ultrasound images ...The ...
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