Publications Repository - Helmholtz-Zentrum Dresden-Rossendorf

2 Publications

Measurements and CFX-simulations of a bubbly flow in a vertical pipe

Krepper, E.; Prasser, H.-M.
In the Forschungszentrum Rossendorf a measurements techniques test loop was constructed. Air water flow in a vertical tube was investigated using different two phase flow measuring techniques. The paper describes the used measuring techniques and some performed experiments. The code CFX-4.2 with its implemented two phase models was used, to simulate bubbly flow and to compare calculated void profiles with the measured results.
The two phase models of the code version CFX-4.2 are able, to describe void profiles with a near wall void maximum, which will be found for bubbly flow showing a monodisperse bubble size distribution. To model flow regimes showing a bubble size distribution and the occurrence of bubble coalescence and fraction, model extensions would be necessary. The consideration of larger bubbles, which may be deformed, requires the development of improved bubble force models.
Keywords: Two phase flow; Measurements; Computational fluid dynamics
  • Lecture (Conference)
    AMIF-ESF Workshop:"Computing methods for two-phase flow", Aussois, January 12-14, 2000, Conference-CD
  • Contribution to proceedings
    AMIF-ESF Workshop:"Computing methods for two-phase flow", Aussois, January 12-14, 2000, Conference-CD

Permalink: https://www.hzdr.de/publications/Publ-3165
Publ.-Id: 3165