caa a22 4500 378927973 CHVBK 20180305123622.0 cr unu---uuuuu 161128e20040922xx s 000 0 eng 10.2202/1542-6580.1147 doi (NATIONALLICENCE)gruyter-10.2202/1542-6580.1147 Numerical and Experimental Investigations into The Effect of Gap Between Baffle and Wall on Mixing in an Oscillatory Baffled Column [Elektronische Daten] [Xiong-Wei Ni, Andrew Fitch, Hongbing Jian] We report our numerical and experimental investigation of the effect on mixing of implementing 0, 2, 4 and 6 mm gaps between the outer edge of baffles and the inner diameter of an Oscillatory Baffled Column (OBC). Large eddy simulation and digital particle image velocimetry techniques have been used to obtain the flow patterns and quantify the flow field and turbulence, such as the velocity ratio, integral length scale and mixing time scale versus the oscillatory Reynolds numbers. It is shown that the global mixing intensity and the turbulence length scale decrease, while the Kolmogorov time scale increases with increasing gap size in the range of experimental conditions tested in this work, which suggests a need for new configuration of OBC with baffle gap for certain applications involving particulates. ©2011 Walter de Gruyter GmbH & Co. KG, Berlin/Boston mixing or reactors nationallicence oscillatory baffled column nationallicence gap nationallicence velocity ratio nationallicence turbulence integral length nationallicence DPIV nationallicence Ni Xiong-Wei Heriot-Watt University, Edinburgh, UK, x.ni@hw.ac.uk aut Fitch Andrew Heriot-Watt University, a.w.fitch@hw.ac.uk aut Jian Hongbing Hazen & Sawyer, HJian@hazenandsawyer.com aut International Journal of Chemical Reactor Engineering De Gruyter 2/1(2004-09-22) 2:1 2004 2 ijcre https://doi.org/10.2202/1542-6580.1147 text/html Onlinezugriff via DOI 1 research article jats NATIONALLICENCE 856 40 https://doi.org/10.2202/1542-6580.1147 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Ni Xiong-Wei Heriot-Watt University, Edinburgh, UK, x.ni@hw.ac.uk aut NATIONALLICENCE 700 1- Fitch Andrew Heriot-Watt University, a.w.fitch@hw.ac.uk aut NATIONALLICENCE 700 1- Jian Hongbing Hazen & Sawyer, HJian@hazenandsawyer.com aut NATIONALLICENCE 773 0- International Journal of Chemical Reactor Engineering De Gruyter 2/1(2004-09-22) 2:1 2004 2 ijcre CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-gruyter