How to repeat and store multiple calculations of vpasolve function in terms of adjusting a variable in the equation

Question

SHIHAB HASNI 2019-11-4

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/489132-how-to-repeat-and-store-multiple-calculations-of-vpasolve-function-in-terms-of-adjusting-a-variable

回答： Jyotsna Talluri 2019-11-7

Asat = 16.3872;

Bsat = 3885.7;

Csat = 230.16;

w0 = 0.38;

En = 220;

n = 1.1;

MWwater = 18.01528;

% (*g/mol*)

R = 8.3145/MWwater;

T0 =4 + 273.15;

Tend = 62 + 273.15;

T = T0;

w = 0.05;

Psat = exp((Asat)- ((Bsat)/(T + Csat - 273.15)));

syms P

S = vpasolvevpasolve(w0*exp(-(((-R*T)*log(P/Psat))/(En))^n)== w, P,'Random',true)

%so if you run this code, S=0.030865627730443770149747137911306

% i want to know how to integrate this solution in a Loop where i can %increase initial tempreture (T0) and store the new solution until it reach %the maximum tempreture (Tend). where it will give me series of %Numerical solutions at each time i will change based on a loop.

%I dont know how to integrate the loop in this code,

%could you please help me here,

%Thanks.

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Answer 1

Jyotsna Talluri 2019-11-7

0
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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/489132-how-to-repeat-and-store-multiple-calculations-of-vpasolve-function-in-terms-of-adjusting-a-variable#answer_400259

在 MATLAB Online 中打开

Solve the equation for each value of T in a for loop by storing the solved value in a array each time

val=[];
for T= T0:5:Tend
Psat = exp((Asat)- ((Bsat)/(T + Csat - 273.15)));
syms P
S = vpasolve(w0*exp(-(((-R*T)*log(P/Psat))/(En))^n)== w, P,'Random',true);
val(end+1)=S;
end