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How low are you prepared to drag relations with our closest ally?" Netanyahu has talked himself into a corner on Iran.
For the air water system, appropriate drag relations are suggested for these two bubble classes.
Discrete particle simulations of a segregating system are performed using various drag relations and boundary conditions, and compared to experiments.
The drag relations for the coupling are modified to take into account the grain shape and cross-sectional area relative to the local gas flow.
The best agreement with experimental results is obtained with drag relations that were recently proposed based on LBM-simulations in combination with the aforementioned polydispersity factor.
In the model, the gas phase is treated as continuum, solved on an Eulerian grid, and the liquid phase is treated as a dispersed phase, solved in a Lagrangian fashion, with interphase coupling through state-of-the-art drag relations obtained from direct numerical simulations.
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From these simulations a new drag relation is derived describing the drag as function of the Reynolds number and the pitch to cylinder diameter, p/D, ratio.
The CFD/DEM was found to reliably predict the segregation rates in low beds, provided that an appropriate gas-particle drag relation is used that accounts for the effect of polydispersity.
The drag relation for interactions between the large bubbles and the liquid, is developed from analysis of an extensive data base on large bubble swarm velocities measured in columns of 0.051, 0.1, 0.174, 0.19, 0.38 and 0.63 m diameter using a variety of liquids (water, paraffin oil, tetradecane).
The outpouring came on the fourth day of a political crisis between Turkey and Israel that has dragged relations between the countries to their lowest point in history.
ISTANBUL — The Israeli commando raid on Monday on an aid flotilla, which left at least nine people dead, has dragged relations between Israel and Turkey to a new low, political experts here say, threatening to derail diplomatic relations between two close American allies.
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