Experimental and numerical investigation of two-phase pressure drop in vertical cross-flow over a horizontal tube bundle.
Author(s) : BAMARDOUF K., MCNEIL D. A.
Type of article: Article
Summary
Experimental pressure drop data for vertical two-phase air-water flow across horizontal tubes is presented for gas mass fractions in the range 0.0005-0.6 and mass fluxes in the range 25-700 kg/m2 s. The square in-line tube bundle had one column containing ten tubes and two columns of half tubes attached to the walls. The tubes had a diameter of 38 mm and a pitch to diameter ratio of 1.32. This data and air-water and R-113 vapour-liquid data available in the literature are compared with the predictions from two kettle reboiler models, the one-dimensional model and a one-dimensional formulation of the two-fluid model. The one-dimensional model was implemented with three separate void fraction correlations and one two-phase friction multiplier correlation. The results show that the two-fluid model predicts air-water void fraction data well but R-113 data poorly with pressure drop predictions for both being unsatisfactory. The one-dimensional model is shown to predict pressure drop and void fraction data reasonably well, provided a careful choice is made for the void fraction correlation. [Reprinted with permission from Elsevier. Copyright, 2008].
Details
- Original title: Experimental and numerical investigation of two-phase pressure drop in vertical cross-flow over a horizontal tube bundle.
- Record ID : 2009-1062
- Languages: English
- Source: Applied Thermal Engineering - vol. 29 - n. 7
- Publication date: 2009/05
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Indexing
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Themes:
Heat transfer;
Two-phase flow - Keywords: Two-phase flow; Air; Bundle; Expérimentation; Crossflow; Shell and tube exchanger; Heat exchanger; Water; Pressure drop
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