STRATIFIED 2-PHASE SUPERFLUID-HELIUM FLOW - II

This paper presents the physical basis of a one-dimensional two-fluid stratified flow model, adapted for adiabatic or diabatic superfluid he lium flow. Closure relationships for wall shear stresses and interfaci al momentum transfer are used to predict the total pressure losses and the void fraction along the line. The numerical resolution is based o n a finite difference scheme. The influence of each term in the moment um equations is discussed. Finally, the model has been verified throug h comparisons with available experimental datal. (C) 1997 Elsevier Sci ence Ltd.