Structure visualization for a gas-liquid flow
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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.
KeywordsVisualization Two-phase flow Section fields Void fraction Flow complexity
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- Arosio, S. and Guilizzoni, M., Characterization of the time-averaged local structure of an isothermal two-phase flow in a horizontal duct with a sudden area expansion, Proc. 4th Pacific Symposium on Flow Visualization and Image Processing (2003).Google Scholar
- Arosio, S. and Guilizzoni, M., The Void Fraction — Flow Complexity Plane for Two-Phase Flows Characterisation, Proc. XXI UIT National Heat Transference Conference. (2003).Google Scholar
- Delhaye, J. M., Equations fondamentales des écoulements diphasiques, Centre dEtudes Nucléaires de Grenoble Report CEA-R-3429 (1) and (2) (1968).Google Scholar
- Foley, J. D., van Dam, A., Feiner, S. K. and Hughes, J. F., Computer Graphics Principles and Practice — Second Edition in C. (1996), Addison-Wesley Publishing Company.Google Scholar
- Guilizzoni, M., Comportamento di un flusso bifase acqua-aria in un condotto orizzontale con un brusco allargamento di sezione, (2002), Ph.D. Thesis, Politecnico di Milano.Google Scholar