Affiliations: Department of Energy, Politecnico di Milano, Piazza
Leonardo da Vinci 32, 20133 Milan, Italy. E-mail: sergio.arosio@polimi.it | Department of Energy, Politecnico di Milano, Piazza
Leonardo da Vinci 32, 20133 Milan, Italy. E-mail:
manfredo.guilizzoni@polimi.it
Abstract: When considering the flow of a two-phase mixture, the complete
characterization of its behavior requires not only the evaluation of its
temperature and pressure evolutions, but also the description of the
distribution of the phases (the so-called "flow structure"). This is of great
importance in problems concerning the analysis of the solicitations undergone
by the containing ducts, both from a mechanical point of view and even more
important when heat transfer at fixed power is involved. In the present paper
some methodologies are presented, which proved to be very useful in the
description and quantitative visualization of the structure of a two-phase
flow: for liquid gas mixtures, they are based on relatively simple experimental
acquisitions of a single quantity and allow a detailed visualization of the flow structure without requiring visual observation of the same.
