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z86197322

Òø³æ (СÓÐÃûÆø)

[½»Á÷] ¡¾ÇóÖú¡¿matlabÀïÔõô½«ans=¡£¡£¡£È¥µô£¿

%¼ÆËãÑõÆøµÄ±ÈÈÈ£¬ÊäÈëֵΪ:itype ÊäÈëÀàÐÍ£»t ζȣ»jtype Êä³öÀàÐÍ
%itype=1 ÊäÈëֵΪÈÈÁ¦Ñ§Î¶ȣ»itype=2 ÊäÈëֵΪÉãÊÏζȣ»itype=3 ÊäÈëֵΪ»ªÊÏζȣ»Ä¬ÈÏֵΪ1
%jtype=1 Êä³ö¸ñʽΪÊý¾Ýµã;jtype=2 Êä³ö¸ñʽΪͼ±í£»Ä¬ÈÏֵΪ2
function zeta=zeta_o2(itype,t,jtype)
%¶ÔζȸñʽµÄת»»
if itype==2
    t=t+273.15;
else if itype==3
        t=(t+273.15-32)/1.8;
    end
end

%¶ÔÊä³ö¸ñʽµÄת»¯£¬±£Áô5λÓÐЧÊý×Ö   
format long

if jtype==1
   zeta=44.224+0.562*t-1.13*10^-4*t^2;
    fprintf('%.2fKʱÑõÆøµÄÕ³¶ÈΪ(¦ÌPa.S):\n%f\n',t,zeta);
else t=[270:260/1000:530];
    for i=1:1:1001
    y(i)=44.224+0.562*t(i)-1.13*10^-4*t(i)^2;
    end
    plot(t,y)
     xlabel('K')
    ylabel('¦ÌPa.S')
    title('ÑõÆøµÄÕ³¶ÈËæÎ¶ȵı仯Ç÷ÊÆ')
end

Êä³ö
26.85¡æÊ±Ë®µÄµ¼ÈÈÂÊΪ(mW/(m¡¤K)):
613.191304

ans =

    6.131913043000001e+002

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change0618

Ìú¸Ëľ³æ (ÖøÃûдÊÖ)

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nono2009(½ð±Ò+1,VIP+0):лл½»Á÷£¡ 10-19 17:00
z86197322(½ð±Ò+2,VIP+0):Á˽â... 10-19 17:07
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zeta=zeta_o2(itype,t,jtype);
3Â¥2009-10-19 16:48:04
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nono2009

³¬¼¶°æÖ÷ (ÎÄѧ̩¶·)

No gains, no pains.

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Interesting question. ButΪºÎҪȥµôÄÇÁ½ÐÐÄØ£¿
2Â¥2009-10-19 16:38:58
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