Wyniki wyszukiwania - BazTech

Ograniczanie wyników

1 Archives of Thermodynamics

1 2005

Powiadomienia systemowe

Sesja wygasła!

Znaleziono wyników: 1

Liczba wyników na stronie

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: przeniesienie fazowe

Sortuj według:

Ogranicz wyniki do:

Simulation of condensation in a subcooled bubbly steam-water flow along a large vertical pipe

Lucas D., Prasser H.

Archives of Thermodynamics

2005

Vol. 26, no. 4

49-59

Detailed experimental data obtained at the TOPFLOW facility for steam-water vertical pipe flow were used to test the complex interaction of local bubble distributions, bubble size distributions and local heat and mass transfer. Steam is injected into subcooled water and condenses during the upward flow. The model considers a large number of bubble classes (50). This allows the investigation of the influence of the bubble size distribution. The results of the simulations show a good agreement with experimental data. The condensation process is clearly slower, if large bubbles are injected (4 mm holes). Also the bubble break-up has a strong influence on the condensation process because of the change of the interfacial area. Some unsureness arises from the unknown interfacial area for large bubbles and possible uncertainties of the heat transfer coefficient.