Frontier Research Series: MRI Measurement of Granular Flows and Fluid-Particle Flows
نویسندگان
چکیده
منابع مشابه
Granular and Particle-Laden Flows
This research programme at the Newton Institute was devoted to improving the understanding and mathematical modelling of granular and particle-laden fluid systems as they arise in nature, in the laboratory and in industry. Geophysical examples of granular and particle-laden flows include rock avalanches, debris flows, mud flows and turbulent boundary layers with suspended particles, such as vol...
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We probe the diffusive motion of particles in slowly sheared three-dimensional granular suspensions. For sufficiently large strains, the particle dynamics exhibits diffusive Gaussian statistics, with the diffusivity proportional to the local strain rate —consistent with a local, quasistatic picture. Surprisingly, the diffusivity is also inversely proportional to the depth of the particles below...
متن کاملGranular Flows
Those who have played with sand on the beach or with sugar in their kitchen are aware that a collection of solid grains can behave macroscopically like a liquid and flow. However, the description of this peculiar fluid still represents a challenge due to the lack of constitutive laws able to describe the rich phenomenology observed. In this paper we first review the properties of dry granular f...
متن کاملGranular Flows
The epigrammatic quote by a French Nobel laureate is familiar to many in the field of granular mechanics and reflects a long-standing scientific fascination and practical interest. This is acknowledged by many others and summarized in the articles listed under Further Reading. As a general definition, we understand by granular medium a particle assembly dominated by pairwise nearest-neighbor in...
متن کاملParticle Dynamic Simulation of Free Surface Granular Flows
A large collection of particles can behave collectively like a fluid. In this work, we examine the fluid behavior of a large collection of particles in the absence of a background gas phase. The use of granular fluids, as opposed to liquids, has several advantages for free-surface plasma-facing coolants: low vapor pressure, absence of electromagnetic interactions, and chemical inertness, to nam...
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ژورنال
عنوان ژورنال: Journal of the Society of Powder Technology, Japan
سال: 2007
ISSN: 0386-6157,1883-7239
DOI: 10.4164/sptj.44.276