Encontrados 8 documentos, a visualizar página 1 de 1
Euler-euler simulation of gas-liquid and gas-liquid-solid airlift reactors : ca...
Simcik, M.; Havlica, J.; Ruzicka, M. C.; Drahoš, J.; Teixeira, J. A.; Brányik, Tomáš
Gas holdup in laboratory scale bubble column : CFD simulations vs. measurements
Simcik, M.; Kulaviak, L.; Havlica, J.; Ruzicka, M. C.; Drahoš, J.; Teixeira, J. A.
Effect of solids on homogeneous–heterogeneous flowregime transition in bubble c...
Mena, P. C.; Ruzicka, M. C.; Rocha, F. A.; Teixeira, J. A.; Drahoš, J.Experiments were conducted to study the effect of the presence of the solid phase on the homogeneous–heterogeneous flow regime transition in a bubble column 0.14m diameter. Air, distilled water and calcium alginate beads (2.1 mm, 1023 kg/m3) at concentrations c=0–30% (vol.) were the phases. The basic data were the voidage–gas flow rate dependences. The critical point, where the homogeneous regime loses stabilit...
Effect of solids on flow regime transition in three-phase bubble columns
Mena, P. C.; Rocha, F. A.; Teixeira, J. A.; Drahoš, J.; Ruzicka, M. C.In bubble column reactors there are two principal flow regimes [1,2,3], the homogeneous (HoR) and the heterogeneous (HeR). These reactors have different behaviour in HoR and HeR, thus the dependences of the rates of mass, heat and momentum transfer on the design and operating parameters (such as reactor geometry, gas and liquid flow rates and properties of the contacting phases) are also very different. Therefo...
Effect of solid particles on flow regimes in bubble columns
Mena, P. C.; Plzáková, M.; Ruzicka, M. C.; Drahoš, J.; Večeř, M.; Wichterle, K.; Teixeira, J. A.
Effect of viscosity on homogeneous–heterogeneous flow regime transition in bubb...
Ruzicka, M. C.; Drahoš, J.; Mena, P. C.; Teixeira, J. A.Experiments were performed in a cylindrical 0.14m diameter bubble column with a metal perforated plate. Air and aqueous solutions of glycerol with viscosity 1–22mPa s were the phases. Gas holdup was measured and plotted against the gas flow rate. The critical point where the homogeneous–heterogeneous regime transition begins was determined by the drift-flux plot of the primary data. The homogeneous regime stabi...
Effect of surfactants on homogeneous regime stability in bubble columns
Mena, P. C.; Ruzicka, M. C.; Drahoš, J.; Teixeira, J. A.; Rocha, F. A.
Effect of viscosity on homogeneous regime stability in bubble columns
Mena, P. C.; Ruzicka, M. C.; Drahoš, J.; Teixeira, J. A.; Rocha, F. A.
| Financiadores do RCAAP | |||||||
|
|
|
|
|
|
||