How to write this equation into code?

I currently have it in this form and I am getting a weird answer:
eqn3 = ((Ac*Pul)/(alpha*CF*miu))*((((Rm*Ac)/(alpha*CF))^2)+(((2*Ac)/(alpha*CF))*((Rm*Vcf)+((alpha*CF*(Vcf^2))/(2*Ac))+((Ac*Pul*(t-tcf))/miu))))^-(1/2) == Vt2;

Antworten (1)

KSSV
KSSV am 4 Mai 2018

0 Stimmen

When you have such a complex equation......it is confusing to type whole equation at once......try to type term by term and then see the answer.
T1 = Ac*Pul/(alpha*CF*mu) ;
T2 = (Rm*Ac/(alpha*CF))^2 ;
T3 = (2*Ac/(alpha*CF))*(Rm*VCF+(alpha*VCF^2)/(2*Ac)+(Ac*Pul*(t-tCF)/mu)) ;
J = T1*(T2+T3)^(-1/2) ;

3 Kommentare

Bryan Lee
Bryan Lee am 4 Mai 2018
Thank you for your input. I tried this and it did not work. It is still giving me a strange answer. Would you like me to give you the values of the constants?
Image Analyst
Image Analyst am 4 Mai 2018
We can't do much else until you do. The formula looks correct. Give values for all the variable, and your expected answer that is known to be correct.
Bryan Lee
Bryan Lee am 4 Mai 2018
Bearbeitet: Walter Roberson am 5 Mai 2018
the equation is set equal to Vt2, and I am solving for the variable 't'. The expected value of t is 2925.24, but I am getting 725764499.359.
CF = 4.5; % kg/m^3
Ac = 0.0018; % m^2
Vt1 = (1e-5)/60; % m^3/s
P0 = 2068.43; % Pa
Pul = 172368.93233; % Pa
miu = 1e-3; % Pa?s
alpha = 3.8e12; % m/kg
Rm = 22339043999.99; % m^-1
tcf = 1161.628; % s
Vcf = 0.0001936; % m^3
Vt2 = 8.333e-08; % m^3

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am 4 Mai 2018

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