Affiliation:
1. Beijing Key Laboratory of Green Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
Abstract
The effect of granular pressure on the fluctuation of the granular volume fraction is investigated experimentally in a gas–solid flow system. Granular compressibility, defined by the response of granular volume fractions in granular pressure, is also measured. It is found that there exists a critical granular pressure beyond which the transition from the coexistence of a liquid-like granular phase and a gas-like granular phase to homogenous granular fluids takes place. The transition from a heterogenous to homogenous granular phase is characterized by an abrupt change in the granular compressibility. To describe the characteristic change in compressibility, a granular hydrostatic model is formulated by considering both collisional and non-collisional interactions. The model predictions agree well with experimental results.
Funder
Natural Science Foundation of China
Subject
Condensed Matter Physics,Fluid Flow and Transfer Processes,Mechanics of Materials,Computational Mechanics,Mechanical Engineering
Cited by
2 articles.
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