aDept.Of civil Engineering;
University of Hong Kong;
Hong Kong;
bDepatment of River & Horbour Engineering;
Nanjing Hydraulic Research Insstitute;
cCentre for Environmental Sciences and Dept.of Mechanics;
Beijing University;
turbulent; jet; crossfiow; advected; line; puff; mixing; concentration; dilntion; double-vortex; momentum; added; mass; self; similarity; turbulence; modeling; bufurcation; environmental; fluid; mechanics;