kh2n

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14 years, 324 days
Glasgow, United Kingdom

MaplePrimes Activity


These are replies submitted by kh2n

your comand works but I want the output to an easy usable form. This commond just gives a list of data but then i have to copy it and remove all the brakets, thats a very long process to do. 

your comand works but I want the output to an easy usable form. This commond just gives a list of data but then i have to copy it and remove all the brakets, thats a very long process to do. 

Well I have every information about the involved parameters. You can see in the assumption that R>0, H>0, C>0 , k>0, 1<S<0. So what you want to know more.

 

Well I have every information about the involved parameters. You can see in the assumption that R>0, H>0, C>0 , k>0, 1<S<0. So what you want to know more.

 

@hirnyk 

I am unable to open this maple file. Please paste the code or upload a classic maple work sheet.

Thanks

@hirnyk 

I am unable to open this maple file. Please paste the code or upload a classic maple work sheet.

Thanks

 

Please see the attached file.

 

Thanks

asympt1.mws

@Robert Israel 

 

Please see the attached file.

 

Thanks

asympt1.mws

@Robert Israel 

Thanks. But If we look to the plot we can see that in some cases we have more than one solution. I tried to use the suggested link but i only get data for one solution. I want to have the complete set of data for more than one solution.

Thanks. But If we look to the plot we can see that in some cases we have more than one solution. I tried to use the suggested link but i only get data for one solution. I want to have the complete set of data for more than one solution.

@Robert Israel 

Thanks for you kind help. In some cases I need to know the coff of (1/Pec_i)^0, i.e., c_0 but we can see that it start with c_1. i also want to know what is c_0.

@Robert Israel 

Thanks for you kind help. In some cases I need to know the coff of (1/Pec_i)^0, i.e., c_0 but we can see that it start with c_1. i also want to know what is c_0.



restart:

A:=Theta0/C=(exp(Pec_i*k*S/(C*(R*S+1-S)))-1)*(H+1/(1-exp(-Pec_i*(1-S)/(R*S+1-S)))):
    assume(C>0,H>0,R>0,k>0,Theta0>0):
    A1:= eval(lhs(A)-rhs(A),S=add(c[k]/Pec_i^j,j=1..6)+O(1/Pec_i^7)):
    A2:= asympt(A1, Pec_i, 7):

A3:= convert(subs(Pec_i=1/t, A2), polynom):
    eqs:= {coeffs(A3,t)}:
    sol:= solve(eqs,{seq(c[k],k=1..6)}):
    factor(sol);

Error, invalid input: factor uses a 1st argument, xFP, which is missing

 

 

 

I tried to use the suggested commands but you can see that is a problem. Please help me out.

Thanks



Download asympt1.mws



restart:

A:=Theta0/C=(exp(Pec_i*k*S/(C*(R*S+1-S)))-1)*(H+1/(1-exp(-Pec_i*(1-S)/(R*S+1-S)))):
    assume(C>0,H>0,R>0,k>0,Theta0>0):
    A1:= eval(lhs(A)-rhs(A),S=add(c[k]/Pec_i^j,j=1..6)+O(1/Pec_i^7)):
    A2:= asympt(A1, Pec_i, 7):

A3:= convert(subs(Pec_i=1/t, A2), polynom):
    eqs:= {coeffs(A3,t)}:
    sol:= solve(eqs,{seq(c[k],k=1..6)}):
    factor(sol);

Error, invalid input: factor uses a 1st argument, xFP, which is missing

 

 

 

I tried to use the suggested commands but you can see that is a problem. Please help me out.

Thanks



Download asympt1.mws

Heat_transfer_in_por.pdf

please see page 48 and 49 of the attached file. I really need this plot.

Thanks

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