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Need help with set of ode

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adi kul
adi kul 2016-9-16
关闭： MATLAB Answer Bot 2021-8-20
Hello All, Attached are the set of ode which I am trying to code. Done with 1st two but not sure how to do the remaining. Your help is appreciated.
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James Tursa
James Tursa 2016-9-16
Why is there a dx hanging off the end of the third equation?
adi kul
adi kul 2016-9-17
@Star Strider I am not asking for the code. I have already solved 1s two. If you want to check these are:
function TempP=primary(Tp,y)
hp=13.64;
Tw=25;
mp=0.007;
Cp=1005;
TempP=-2*hp*(Tp-Tw)/(mp*Cp);
function water=Water(W,x)
Tw=25;
Wsat=0.0046*exp(0.0589*Tw);
ms=0.0023;
hm=0.013;
water=-hm*(Wsat-W)/ms;
And the script:
clear all
yrange=[0:0.02:0.9];
Tp=40;
[Tp,y]=ode45(@primary,yrange,Tp);
figure(1)
plot(Tp,y)
ylabel('Tp (deg C)')
xlabel ('Y (m)')
xrange=[0:0.025:0.49];
W=0.01168;
[W,x]=ode45(@Water,xrange,W);
figure(2)
plot(W,x)
ylabel('W')
xlabel ('X (m)')
What I am stuck with is the last two. I am not sure how I can code them.

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