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Based on the viscous Kelvin–Helmholtz theory, an instability analysis of stratified flow during condensation inside horizontal tubes is conducted to predict the transition from stable two-phase stratified flow to unstable flow. Taking into account the condensation heat transfer, a linear analysis of the one-dimensional two-fluid model is employed to calculate the amplification factor, which is used...
In this paper, first we proposed a method of attribute reduction based on rough set under fuzzy equivalent relation. We computed the similarity of cases with the fuzzy equivalent relation, reduced the attributes by the same fuzzy equivalent partitions based on rough set, and then gave a method of computing the weights of the attributes. Comparing with the traditional method of attribute reduction...
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