Reynolds number and settling velocity influence for finite-release particle-laden gravity currents in a basin
نویسندگان
چکیده
منابع مشابه
Low Reynolds number suspension gravity currents.
The extension of a gravity current in a lock-exchange problem, proceeds as square root of time in the viscous-buoyancy phase, where there is a balance between gravitational and viscous forces. In the presence of particles however, this scenario is drastically altered, because sedimentation reduces the motive gravitational force and introduces a finite distance and time at which the gravity curr...
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Experimental results are presented for the spreading of buoyant drops and gravity currents along a free surface. The spreading occurs at low Reynolds number, and no interfacial tension exists between the spreading and ambient fluid. Theoretical results suggest that distinct spreading rates occur in three regimes: l!@ ln(R/a)#a/R, a/R!l!R/a , and l@R/a , where l is the ratio of the spreading and...
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In this numerical study, we are interested in the prediction of a mono-disperse dilute suspension particle-laden flow in the typical lock-exchange configuration. The main originality of this work is that the deposition of particles is taken into account for high Reynolds numbers up to 10 000, similar to the experimental ones. Unprecedented twoand three-dimensional Direct Numerical Simulations (...
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The most meaningful parameter to determine the treatment efficiency of large scale sedimentation tanks is the settling velocity of suspended solids. However it is difficult to measured representative settling velocity because of the instability of suspended solids. A water elutriation system was tested to assess the treatment efficiency of sedimentation tanks. In laboratory tests the flow condi...
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ژورنال
عنوان ژورنال: Computers & Geosciences
سال: 2018
ISSN: 0098-3004
DOI: 10.1016/j.cageo.2017.09.010