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Question: Error, (in dsolve/numeric/bvp) initial Newton iteration is not converging

Question:Error, (in dsolve/numeric/bvp) initial Newton iteration is not converging

mehdi jafari 769 Maple 2022
ode dsolve numeric differential-equations newton bvp
April 28 2023
1

Hi everyone
how can i overcome this error to solve this ODE ? tnx in advanced.

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restart
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U := 1:L := 10:k := 1:Dea := 0.00001:CA0 := 10:Pe := U*L/Dea:Da := k*CA0^2/Dea:
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Eq1 := diff(CA(x), x, x) - Pe*diff(CA(x), x)/L = Da*L*CA(x)^2/CA0;

diff(diff(CA(x), x), x)-100000.0000*(diff(CA(x), x)) = 10000000.00*CA(x)^2

 (1)
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BCs := CA(0) = CA0, D(CA)(L) = 0

CA(0) = 10, (D(CA))(10) = 0

 (2)
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ans := dsolve([Eq1, BCs], numeric);

Error, (in dsolve/numeric/bvp) initial Newton iteration is not converging

  
> 

 

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