Papers
Two-Phase Flow Instabilities in Boiling and Condensing Systems
2012 Volume 6 Issue 2 Pages 302-313
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2012 Volume 6 Issue 2 Pages 302-313
In this work Density Wave Oscillations (DWO) and Ledinegg instabilities are analyzed for boiling and condensing systems in a single tube. The analysis is based on a numerical model solved with a least squares spectral element method which is characterized by negligible numerical diffusion and high accuracy. Stability limits are constructed and compared with available correlations. The analysis is extended to sub-cooled, saturated and over-heated inlet conditions. Finally a discussion regarding the occurrence of these phenomena in condensing systems is presented.
