This paper analyses separation process of gas-liquid mixture in submersible centrifugal gas separators. Gas separation coefficient is a monotonic function of two non-dimensional variables. Values of the function at the boundaries of variation range are found. Approximation of gas separation coefficient by the function satisfying these conditions is obtained. For gas separators of different designs the suggested characteristic curve was correlated to experimental information. It is shown that average approximation error did not exceed 10%.
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