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ÏëËãÒ»¸öŨ¶ÈËæÊ±¼ä±ä»¯µÄÀý×Ó£¬´úÂëÈçÏ£¬ >> d=4; >> w=100; >> u=1; >> k=1e-6; >> Rh=w*d/(w+2*d); >> n=0.025; >> C=1.5*Rh^(1/6)/n; >> g=9.81; >> uj=u*g^0.5/C; >> Dy2=0.3*d*uj; >> Dy1=0.9*d*uj; >> Dy=(Dy1+Dy2)/2; >> L=0.4*u*w^2/Dy; >> Dx=0.011*u^2*w^2/(d*uj); >> x=50000; >> M=100000; >> A=w*d; >> t = 0:18000:90000; >> plot(t,M/A.*(4*3.14*Dx.*t).^0.5.*exp(-(x-u.*t).^2/(4*Dx.*t)-k.*t)) µ«ÊÇÎÒ»³öÀ´µÄ½á¹ûΪʲôºÍÎÄÏ×Éϲ»Ò»ÑùÄØ£¿Çë´ó¼Ò¿´¿´ÄÄÒ»²½³ö´íÁË£¬Ð»Ð» |
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2012-02-23 16:20:46, 140.54 K
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