Abstract
Stationary experiments (subcritical and with choked flow) with strongly accelerated steamwater and air-water mixtures, assuming a broad variation of inflow conditions (m˙,p,x), were performed in a well-instrumented horizontal diffuser. The experimental setup is reported as well as the experimental program. The phenomenology of a two-phase horizontal diffuser flow is investigated.Experimental data are compared to calculations with a one-dimensional computer code (DUESE). In a systematic study, two-phase flow models (homogeneous and drift-flux) and empirical parameters in constitutive correlations of different code versions were tested. Special attention was given to the pressure rise in the diffuser, which could be calculated adequately only with the drift-flux correlation taken from the SOLA-DF code.Velocity data for choked flow conditions are compared to four different two-phase sound velocity models, which give the best agreement with the equilibrium sound velocity.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
