煤量甏圆家重点实验宝 7) Attenuation of v S <067,Vm=Vo S >0.67,=f v (3-3) 2. Turbulent properties 1) In core region,y个↑,x个,vt↑ 2)in basic region, Vtmax >3 vt 3)vx>> Vaz,VX≈vy≈vz National Lab, of Coal Combustion. HUST Wuhan 430074 P R CHINA E-mail:pcbnlcc@hust.edu.cnNL CC National Lab. of Coal Combustion, HUST Wuhan 430074, P. R. CHINA E-mail: pcbnlcc@hust.edu.cn 7) Attenuation of vm 0.67, ( ) 0.67, 0 0 0 0 0 r as f v v r as v v r as x m  =  = (3-3) 2. Turbulent properties 1) in core region, y↑, x↑, nt↑ 2) in basic region, ntmax > 3 nto 3) vx >> vy ≈vz , v’x ≈ v’y ≈ v’z