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- W997002912 abstract "A AB BS ST TR RA AC CT T Diphasic flows of concentrated suspensions describe the rheology of melt casting explosives. Anxious to limit the handling of pyrotechnical products, presenting by nature a risk with respect to the mechanical and thermal aggressions, we take profit from the results obtained from the research works undertaken for many years in the civil engineering sector. The objective of this work is to propose a predictive model of the flow time of a concentrated suspension through a nozzle situated at the bottom of a tank. Similarly to our industrial process, the suspension is made out of energetic materials and flows under gravity. Experimental results are compared to three models (Quemada, Krieger-Dougherty and Mooney) that predict the viscosity μ of a suspension as a function of the solid volume fractionφ , the maximum packing density m φ and the insterstitial liquid viscosity 0 μ . The model of De Larrard is used to calculate m φ . The experimentally measured pure liquid viscosity is comparable to the prediction made with Bernoulli theorem, where the liquid is considered as incompressible and perfect. It turns out that the Quemada model gives a fair agreement between predictions and experiments." @default.
- W997002912 created "2016-06-24" @default.
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- W997002912 date "2006-01-01" @default.
- W997002912 modified "2023-09-23" @default.
- W997002912 title "Application d'un modèle de viscosité à la coulée d'explosifs : Modélisation du temps de coulée." @default.
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