TY - GEN
T1 - Hyperbolicity breaking and interfacial area concnetration of bubbly flow
AU - Lee, Jae Young
AU - Hibiki, Takashi
AU - Ishii, Mamoru
N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].
PY - 2007
Y1 - 2007
N2 - The hyperbolicity breaking condition of the two-fluid model correspond to the illposedness is investigated to be a tool to correlate the hydrodynamic parameters with the interfacial area concentration. From the stability condition of the two-fluid model furnished by the interfacial pressure force based on the curvature of the bubble, the stability condition of the interfacial area concentration is derived. The powers of the correlation are determined based on Hibiki-Ishii model and the present model naturally deduced the reason of density ratio in the formulation. The formulation derived here clearly showed the correlation of the interfacial area concentration with the viscous number, the Laplace length scale, the density ratio, and the void fraction. It was found that the present formulation can successfully explain the system pressure effect on the IAC and partial explanation of the flow regime transition based on the instability of the system.
AB - The hyperbolicity breaking condition of the two-fluid model correspond to the illposedness is investigated to be a tool to correlate the hydrodynamic parameters with the interfacial area concentration. From the stability condition of the two-fluid model furnished by the interfacial pressure force based on the curvature of the bubble, the stability condition of the interfacial area concentration is derived. The powers of the correlation are determined based on Hibiki-Ishii model and the present model naturally deduced the reason of density ratio in the formulation. The formulation derived here clearly showed the correlation of the interfacial area concentration with the viscous number, the Laplace length scale, the density ratio, and the void fraction. It was found that the present formulation can successfully explain the system pressure effect on the IAC and partial explanation of the flow regime transition based on the instability of the system.
KW - Bubble
KW - Hyperbolicity breaking
KW - Interfacial area concentration
KW - Two-fluid model
UR - https://www.scopus.com/pages/publications/44349112412
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-44349112412&origin=recordpage
M3 - RGC 32 - Refereed conference paper (with host publication)
SN - 0894480588
SN - 9780894480584
T3 - Proceedings - 12th International Topical Meeting on Nuclear Reactor Thermal Hydraulics, NURETH-12
BT - Proceedings - 12th International Topical Meeting on Nuclear Reactor Thermal Hydraulics, NURETH-12
T2 - 12th International Topical Meeting on Nuclear Reactor Thermal Hydraulics, NURETH-12
Y2 - 30 September 2007 through 4 October 2007
ER -