matlab怎么实现循环,matlab怎么实现直到型循环

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概述

clc;

clear;

D=4;

D0 = 0.012;

qm = 0.06;

I = 380;

G = 810;

Tfi = 323;

Ta = 285;

V = 4.2;

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

if D>70

D=70;

else

D=D;

end

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

M = 0.85;%透过率τ

N = 0.9; %吸收率α

L = 2.3*10^(-3); %厚度L

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

K = M*N/(1-(1-M)*0.16)+0.27*(1-(exp(1))^(-4*L)) ; %2-8A

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

A = 5.67*10^(-8); %σ

B = 0.1; %ε_p吸热板发射率

C = 0.9; %ε_c盖板发射率

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

%假设Tp

Tpp=70+273;

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

hw=5.7+3.8*V; %

f=(1+0.0892*hw-0.1166*hw*B)*(1+0.07866); %

c=520*(1-0.000051*D^2); %用D表示倾斜角度β

Z = 0.43*(1-Tpp); %e=0.43(1-100?T_p )%

Ut=(1/(c/Tpp*((Tpp-Ta)/(1+f))^Z)+1/hw)^(-1)+A*(Tpp+Ta)*(Tpp^2+Ta^2)/((B+0.00591*hw)^(-1)+(1+f+0.133*B)/C-1);

%公式2-39 A=5.67*10^(-8) B=0.1 %吸热版发射功率 C= %盖板发射率

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

E= 0.04 ;% λ_(p-b)，λ_(p-e)隔热层导热系数

H= 25*10^(-3) ;%L_(p-b)底部厚度

J= 25*10^(-3) ;% L_(p-e) 侧壁厚度

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

Ub=1/(H/E+1/(5.7+3.8*V)) ;

%2-43a

Ue=1/(J/E+1/(5.7+3.8*V)) ;

%2-43b E= 0.04 ;%隔热层导热系数 H= 25*10^(-3) ;%地步厚度 J= 25*10^(-3) ;%侧壁厚度

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

Ae = 0.5; %侧壁面积 A_e

At = 1.82; %采光面积 A_t

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

Ul=Ut+Ub+Ae/At*Ue ; %2-14A_t采光面积；A_e侧面面积；V环境风速

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

tp=70;

ta=12;

Cp=4.185*10^3 ;

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

Ql = At*Ul*(tp-ta); %2-3 Ql

Qu = At*G*K-At*Ul*(tp-ta); %2-4 Qu

Tf = Qu/(2*Cp*qm)+Tfi ; %2-61c

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

W = 135*10^(-3); %翅片宽度 W

Di = 10*10^(-3); %内径D_i

O=1000;%水的密度

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

Ww =qm/((pi*Di^2/4)*O*floor(1/W)) ; %2-51

tf=Tf-273;

hi =(1430+23.3*tf^2)*Ww^0.8*Di^(-0.2); %2-50

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

W = 135*10^(-3); %翅片宽度 W

I = 380 ; %导热系数λ_p

J = 0.35*10^(-3) ; %翅片厚度 δ

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

m=sqrt(Ul/(I*J)) ; %2-49 I J

F=tanh(m*(W-D0)/2)/(m*(W-D0)/2) ; %2-48

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

a=2.5*10^(-3);%焊缝宽度

b=0.3*10^(-3);%焊缝高度

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

Cb=I*a/b;

Ff = 1/Ul/(W*(1/(Ul*((W-D0)*F+D0)))+1/Cb+1/(hi*Di*pi)); %2-46

Fr = qm*Cp/(At*Ul)*(1-exp(-At*Ul*Ff/(qm*Cp))); %2-54

Tp = Tfi+(Qu/(At*Fr*Ul))*(1-Fr) ; %

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

%%%%%if abs(Tp-Tp')<10^(-5)I=Fr*(K-Ul*(Tfi-Ta)/G) %η=F_R [(τα)_e-U_L (T_fi-T_a)/G]elseTpp = Tp;%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

if abs(Tp-Tpp)<10^(-5)

S = Fr*(K-Ul*(Tfi-Ta)/G) ;

else

while abs(Tp-Tpp)>10^(-5)

hw = 5.7+3.8*V; %

f=(1+0.0892*hw-0.1166*hw*B)*(1+0.07866); %

c=520*(1-0.000051*D^2); %用D表示倾斜角度β

Z = 0.43*(1-Tp); %e=0.43(1-100?T_p )%

Ut=(1/(c/Tp*((Tp-Ta)/(1+f))^Z)+1/hw)^(-1)+A*(Tp+Ta)*(Tp^2+Ta^2)/((B+0.00591*hw)^(-1)+(1+f+0.133*B)/C-1);

%公式2-39 A=5.67*10^(-8) B=0.1 %吸热版发射功率 C= %盖板发射率

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

E= 0.04 ;% λ_(p-b)，λ_(p-e)隔热层导热系数

H= 25*10^(-3) ;%L_(p-b)底部厚度

J= 25*10^(-3) ;% L_(p-e) 侧壁厚度

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

Ub=1/(H/E+1/(5.7+3.8*V)) ;

%2-43a

Ue=1/(J/E+1/(5.7+3.8*V)) ;

%2-43b E= 0.04 ;%隔热层导热系数 H= 25*10^(-3) ;%地步厚度 J= 25*10^(-3) ;%侧壁厚度

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

Ae = 0.5; %侧壁面积 A_e

At = 1.82; %采光面积 A_t

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

Ul=Ut+Ub+Ae/At*Ue ; %2-14A_t采光面积；A_e侧面面积；V环境风速

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

tp=70;

ta=12;

Cp=4.185*10^3 ;

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

Ql = At*Ul*(tp-ta); %2-3 Ql

Qu = At*G*K-At*Ul*(tp-ta); %2-4 Qu

Tf = Qu/(2*Cp*qm)+Tfi ; %2-61c

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

W = 135*10^(-3); %翅片宽度 W

Di = 10*10^(-3); %内径D_i

O=1000;%水的密度

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

Ww =qm/((pi*Di^2/4)*O*floor(1/W)) ; %2-51

tf=Tf-273;

hi =(1430+23.3*tf^2)*Ww^0.8*Di^(-0.2); %2-50

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

W = 135*10^(-3); %翅片宽度 W

I = 380 ; %导热系数λ_p

J = 0.35*10^(-3) ; %翅片厚度 δ

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

m=sqrt(Ul/(I*J)) ; %2-49 I J

F=tanh(m*(W-D0)/2)/(m*(W-D0)/2) ; %2-48

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

a=2.5*10^(-3);%焊缝宽度

b=0.3*10^(-3);%焊缝高度

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

Cb=I*a/b;

Ff = 1/Ul/(W*(1/(Ul*((W-D0)*F+D0)))+1/Cb+1/(hi*Di*pi)); %2-46

Fr = qm*Cp/(At*Ul)*(1-exp(-At*Ul*Ff/(qm*Cp))); %2-54

Tp = Tfi+(Qu/(At*Fr*Ul))*(1-Fr) ; %

end

S = Fr*(K-Ul*(Tfi-Ta)/G)

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本文分类：matlab怎么实现循环
浏览次数：72 次浏览
发布日期：2023-06-25 07:00:02
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