Multidimensional two-phase flow structure in systems with large diameter
Abstract
Reviewing the available literature has revealed that the current experimental and modeling efforts for large diameter channels have some significant limitations. To correct these limitations, efforts have been made to collect data for experimental ranges where no data is currently available regarding flow regime, void fraction, and interfacial area transport. Further modeling efforts have been initiated to develop new flow regime transition criteria, develop new drift-flux type correlations to estimate void fraction and compute the interfacial drag in the two-fluid model, and improve and benchmark the existing interfacial area transport equation source and sink terms for large diameter channels. Currently these efforts have led to significant expansion of the experimental database, development of new flow regime transition criteria applicable to large diameter channels, validation of a new drift-flux type model for churn-turbulent flows in large diameter channels, several modifications to the constitutive models used in the IATE for large diameter systems, and significant improvement of the performance of the IATE using the new data and new benchmarking efforts.
Degree
Ph.D.
Advisors
Ishii, Purdue University.
Subject Area
Mechanical engineering|Nuclear engineering
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