Effect of dynamic shear stress on thermosyphon flooding limit
- Univ. of New Mexico, Albuquerque, NM (United States)
A one-dimensional, analytical model is developed to predict the flooding limited in closed, two-phase flow thermosyphons. This steady-state model incorporates the shear stress at the liquid-vapor interface as the sum of two terms: (a) the adiabatic shear stress, and (b) the dynamic shear stress, to account for the effect of evaporation at the interface. The calculated values of the liquid films Reynolds number at the onset of flooding are in good agreement with experimental data of other investigators for water and methanol, to within {+-}10%. The results demonstrate that at intermediate and high liquid film Reynolds number, neglecting the dynamic shear stress underestimates the film Reynolds numbers at the onset of flooding by 20% or more.
- OSTI ID:
- 485010
- Report Number(s):
- CONF-960815-; TRN: IM9727%%178
- Resource Relation:
- Conference: 31. national heat transfer conference, Houston, TX (United States), 3-6 Aug 1996; Other Information: PBD: 1996; Related Information: Is Part Of Heat transfer -- Houston 1996; El-Genk, M.S. [ed.] [Univ. of New Mexico, Albuquerque, NM (United States)]; PB: 385 p.; AIChE symposium series, Number 310, Volume 92
- Country of Publication:
- United States
- Language:
- English
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