caa a22 4500 445874554 CHVBK 20180317145523.0 cr unu---uuuuu 170323e20111201xx s 000 0 eng 10.1007/s10652-011-9219-y doi (NATIONALLICENCE)springer-10.1007/s10652-011-9219-y Mixing in the three-dimensional wake of an experimental modelled vehicle [Elektronische Daten] [K. Gosse, M. Gonzalez, P. Paranthoën] Experimental results on tracer gas diffusion within the near wake of a simplified model car (Ahmed model with a rear slant angle of 25°) are presented. Pollutant emission is simulated using heated air injected through a small pipe at one side of the model base. Fine cold wire thermometry is used to measure instantaneous temperature excess and variance of temperature gradient in the near wake. Measurements of the three mean velocity components were made using a laser Doppler anemometers system. Characteristics of the mean and fluctuating temperature fields, time-averaged flow streamlines and scalar dissipation measurements are presented and discussed. The local mixing time scale is determined from the measured mean dissipation rate of temperature variance. Its value shows that micromixing is not a limiting phenomenon for chemical reactions in the near wake. Springer Science+Business Media B.V., 2011 Ahmed body nationallicence Passive scalar nationallicence Turbulence nationallicence Mixing time nationallicence Car pollution nationallicence Gosse K. C.N.R.S. UMR 6614, CORIA Université de Rouen, Site Universitaire du Madrillet, BP 12, 76801, Saint Etienne du Rouvray Cedex, France aut Gonzalez M. C.N.R.S. UMR 6614, CORIA Université de Rouen, Site Universitaire du Madrillet, BP 12, 76801, Saint Etienne du Rouvray Cedex, France aut Paranthoën P. C.N.R.S. UMR 6614, CORIA Université de Rouen, Site Universitaire du Madrillet, BP 12, 76801, Saint Etienne du Rouvray Cedex, France aut Environmental Fluid Mechanics Springer Netherlands 11/6(2011-12-01), 573-589 1567-7419 11:6<573 2011 11 10652 https://doi.org/10.1007/s10652-011-9219-y text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10652-011-9219-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Gosse K. C.N.R.S. UMR 6614, CORIA Université de Rouen, Site Universitaire du Madrillet, BP 12, 76801, Saint Etienne du Rouvray Cedex, France aut NATIONALLICENCE 700 1- Gonzalez M. C.N.R.S. UMR 6614, CORIA Université de Rouen, Site Universitaire du Madrillet, BP 12, 76801, Saint Etienne du Rouvray Cedex, France aut NATIONALLICENCE 700 1- Paranthoën P. C.N.R.S. UMR 6614, CORIA Université de Rouen, Site Universitaire du Madrillet, BP 12, 76801, Saint Etienne du Rouvray Cedex, France aut NATIONALLICENCE 773 0- Environmental Fluid Mechanics Springer Netherlands 11/6(2011-12-01), 573-589 1567-7419 11:6<573 2011 11 10652 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer