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EXPERIMENTAL STUDY ON GAS-LIQUID TWO-PHASE FLOWS IN AN AREATION TANK BY USING IMAGE TREATMENT METHOD
Authors:CHENG Wen  LIU Wen-hong  HU Bao-wei  WAN Tian
Affiliation:1. Laboratory for Aero- & Hydrodynamics, Delft University of Technology, 2628 CA Delft, The Netherlands;2. Shell Projects & Technology, 1030 BA Amsterdam, Netherlands;1. Centro de Cultivos Mariños, Consellería do Mar, Xunta de Galicia, Ribadeo (Lugo), Spain;2. Novostrea Bretagne, Route du Vieux Passage, Banastère, 56370 Sarzeau, France;3. CIIMAR Interdisciplinary Centre of Marine and Environmental Research, Laboratory of Ecotoxicology and Ecology, University of Porto, Rua dos Bragas, 289, 4050-123 Porto, Portugal;4. Grupo de Reciclado e Valorización de Residuos (REVAL), Instituto de Investigacións Mariñas (IIM-CSIC), C/Eduardo Cabello, 6, CP 36208 Vigo, Spain;1. Geriatric Department, H.U. Ramón y Cajal, Ctra. de Colmenar Viejo, km. 9, 100, 28034 Madrid, Spain;2. Hematology Department, H.U. de Canarias, Ctra. Ofra, s/n, 38320 San Cristóbal de La Laguna, Santa Cruz de Tenerife, Spain;3. Hematology Department, H. U. La Fe, Av. Fernando Abril Martorell, 106, 46026 Valencia, Spain;4. Hematology Department, H.U. Infanta Leonor, Avenida Gran Vía del Este, 80, 28031 Madrid, Spain;5. Hematology Department, C.S. Parc Taulí, Parc Taulí, 1, 08208 Sabadell, Barcelona, Spain;6. Hematology Department, C.H.U. A Coruña, As Xubias, 84, 15006, A Coruña, Spain;7. Hematology Department, H.U. de La Ribera, Carretera Corbera, km 1, 46600 Alzira, Valencia, Spain;8. Hematology Department, H. U. Vall d''Hebrón, Passeig de la Vall d''Hebron, 119-129, 08035 Barcelona, Spain;9. Hematology Department, H.U. Txagorritxu, c/Jose Atxotegi, s/n, 01009 Vitoria-Gasteiz, Álava, Spain;10. Hematology Department, C.H. de Navarra, Av. Pío XII, 36, 31008, Pamplona, Navarra, Spain;11. Hematology Department, C.H. de Segovia, c/de Miguel Servet, s/n, Segovia, Spain;12. Hematology Department, H. Sant Joan de Déu, C/Joan Soler 1-3, 08243 Manresa, Barcelona, Spain;13. Hematology Department, H.U. Arnau de Vilanova, Avenida Alcalde Rovira Roure, 80, 25198 Lleida, Spain;14. Hematology Department, Hospital Clínic de Barcelona, Carrer Villarroel, 170, 08036 Barcelona, Spain;15. Hematology Department, Catalan Institute of Oncology, IDIBELL, Hospital Duran i Reynals, Avinguda Granvia de l''Hospitalet, 199-203, 08908 l''Hospitalet de Llobregat, Barcelona, Spain;p. Hematology Department, H.U. Central de Asturias, Calle Carretera de Rubín, s/n, 33011 Oviedo, Spain;q. Hematology Department, Hospital Universitario Severo Ochoa, Avenida de Orellana, s/n, 28911 Leganés, Madrid, Spain;r. Dynamic Science S.L., c/Azcona, 31, 28028 Madrid, Spain;s. Celgene S.L.U., Paseo de Recoletos, 37, 28004 Madrid, Spain
Abstract:Particle Image Velocimetry (PIV) technique was employed to study experimentally gas-liquid two-phase flow in an aeration tank. In terms of the PIV principles, an algorithm of PIV based on the Fast Fourier Transformation (FFT) was worked out. The PIV program was developed and verified, and then was used to measure three kinds of states in the testing device. The program was also used to calculate and analyze the related parameters. The experimental data indicate that the bubbles in testing device have the longest resident time and stronger turbulent intensity for the gas-liquid two-phase flow in a special case (Case 3), resulting in great increase of the oxygen transferring speed and efficiency, whereby providing the basis for the selection design of aeration tank.
Keywords:gas-liquid two-phase flow  Particle Image Velocimetry (PIV)  Fast Fourier Transformation (FFT)  aeration tank
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