Prediction of Flashing Water Flow Through Fine Annular Clearances

Abstract
The flow of a flashing mixture of water and steam through smooth annuli of fine clearance has been investigated experimentally. Test data have been obtained with inlet conditions to 600 F and 3000 psi. Critical conditions have been observed experimentally up to these temperatures and pressures. With the assumption that the flashing mixture is homogeneous a method for the prediction of flow and two-phase pressure drop is presented and discussed.

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