caa a22 4500 378927914 CHVBK 20180305123622.0 cr unu---uuuuu 161128e20040712xx s 000 0 eng 10.2202/1542-6580.1146 doi (NATIONALLICENCE)gruyter-10.2202/1542-6580.1146 Flow Generated by Radial Flow Impellers: PIV Measurements and CFD Simulations [Elektronische Daten] [Avinash Khopkar, Joella Aubin, C Rubio-Atoche, Catherine Xuereb, Nathalie Le Sauze, Joel Bertrand, Vivek V Ranade] Particle image velocimetry (PIV) and computational fluid dynamics (CFD) have been used to investigate the single phase and gas-liquid flow generated by a Scaba SRGT turbine. The key details of the trailing vortices, the turbulent flow around the impeller blades and the accumulation of gas have been studied by using PIV measurements and CFD simulations. Both the experimental and numerical results show that the flow and the trailing vortices are not altered significantly upon gassing. The simulated results are generally in good agreement with the experimental findings. The CFD simulations also show that only small low-pressure regions exist behind the blades of the Scaba turbine compared with the very large low-pressure zones formed by the Rushton turbine. These results enable better understanding of the improved performance of the Scaba turbine for gas-liquid dispersions compared with the Rushton turbine. ©2011 Walter de Gruyter GmbH & Co. KG, Berlin/Boston Stirred vessels nationallicence Stirred vessel nationallicence Gas-liquid flow nationallicence Scaba turbine nationallicence Rushton turbine nationallicence PIV nationallicence CFD nationallicence Khopkar Avinash National Chemical Laboratory, arkhopkar@ifmg.ncl.res.in aut Aubin Joella ENSIACET, Joelle.Aubin@ensiacet.fr aut Rubio-Atoche C. ENSIACET, Rubio-Atoche@ensiacet.fr aut Xuereb Catherine ENSIACET, Catherine.Xuereb@ensiacet.fr aut Le Sauze Nathalie ENSIACET, nathalie.lesauze@iut-tlse3.fr aut Bertrand Joel ENSIACET, Joel.Bertrand@ensiacet.fr aut Ranade Vivek V. National CHemical Laboratory, vvranade@ifmg.ncl.res.in aut International Journal of Chemical Reactor Engineering De Gruyter 2/1(2004-07-12) 2:1 2004 2 ijcre https://doi.org/10.2202/1542-6580.1146 text/html Onlinezugriff via DOI 1 research article jats NATIONALLICENCE 856 40 https://doi.org/10.2202/1542-6580.1146 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Khopkar Avinash National Chemical Laboratory, arkhopkar@ifmg.ncl.res.in aut NATIONALLICENCE 700 1- Aubin Joella ENSIACET, Joelle.Aubin@ensiacet.fr aut NATIONALLICENCE 700 1- Rubio-Atoche C. ENSIACET, Rubio-Atoche@ensiacet.fr aut NATIONALLICENCE 700 1- Xuereb Catherine ENSIACET, Catherine.Xuereb@ensiacet.fr aut NATIONALLICENCE 700 1- Le Sauze Nathalie ENSIACET, nathalie.lesauze@iut-tlse3.fr aut NATIONALLICENCE 700 1- Bertrand Joel ENSIACET, Joel.Bertrand@ensiacet.fr aut NATIONALLICENCE 700 1- Ranade Vivek V. National CHemical Laboratory, vvranade@ifmg.ncl.res.in aut NATIONALLICENCE 773 0- International Journal of Chemical Reactor Engineering De Gruyter 2/1(2004-07-12) 2:1 2004 2 ijcre CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-gruyter