<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Cao, Yu-Hui</style></author><author><style face="normal" font="default" size="100%">Jun Chen</style></author><author><style face="normal" font="default" size="100%">Zhen-Su She</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">The nature of near-wall convection velocity in turbulent channel flow</style></title><secondary-title><style face="normal" font="default" size="100%">Acta Mechanica SinicaActa Mechanica Sinica</style></secondary-title><alt-title><style face="normal" font="default" size="100%">Acta Mech Sinica</style></alt-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">boundary-layer</style></keyword><keyword><style  face="normal" font="default" size="100%">cascade</style></keyword><keyword><style  face="normal" font="default" size="100%">channel flow</style></keyword><keyword><style  face="normal" font="default" size="100%">coherent structures</style></keyword><keyword><style  face="normal" font="default" size="100%">convection</style></keyword><keyword><style  face="normal" font="default" size="100%">scale</style></keyword><keyword><style  face="normal" font="default" size="100%">structure classification</style></keyword><keyword><style  face="normal" font="default" size="100%">turbulent structure</style></keyword><keyword><style  face="normal" font="default" size="100%">viscous sublayer</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2008</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Oct</style></date></pub-dates></dates><number><style face="normal" font="default" size="100%">5</style></number><volume><style face="normal" font="default" size="100%">24</style></volume><pages><style face="normal" font="default" size="100%">587-590</style></pages><isbn><style face="normal" font="default" size="100%">0567-7718</style></isbn><language><style face="normal" font="default" size="100%">English</style></language><abstract><style face="normal" font="default" size="100%">A novel notion of turbulent structure-the local cascade structure-is introduced to study the convection phenomenon in a turbulent channel flow. A space-time cross-correlation method is used to calculate the convection velocity. It is found that there are two characteristic convection speeds near the wall, one associated with small-scale streaks of a lower speed and another with streamwise vortices and hairpin vortices of a higher speed. The new concept of turbulent structure is powerful to illustrate the dominant role of coherent structures in the near-wall convection, and to reveal also the nature of the convection-the propagation of patterns of velocity fluctuations-which is scale-dependent.</style></abstract><accession-num><style face="normal" font="default" size="100%">WOS:000260181500013</style></accession-num><notes><style face="normal" font="default" size="100%">362erTimes Cited:2Cited References Count:13</style></notes><section><style face="normal" font="default" size="100%">587</style></section><auth-address><style face="normal" font="default" size="100%">Peking Univ, State Key Lab Turbulence Res &amp;amp; Complex Syst, Beijing 100871, Peoples R ChinaUniv Calif Los Angeles, Dept Math, Los Angeles, CA 90095 USA</style></auth-address></record></records></xml>