How can I identify the powers and the coefficient of a semi-known 2 variable function?

1 visualización (últimos 30 días)
Ege Keskin
Ege Keskin el 7 de Dic. de 2018
Respondida: Walter Roberson el 8 de Dic. de 2018
I am currently trying to corralate Reynold's and Prundtl number to find the Nusselt number. The equation is Nu = C*Re^n*Pr^m , where C,n,m are non integer constants. I have 5 pieces of data where I know Nu,Re, and Pr. My aim is to find C,n,m. I have looked through a bunch of curve fitting techniques but all of them seem to work only for integer powers. Any suggestions?

Iniciar sesión para responder a esta pregunta.

Respuesta aceptada

Walter Roberson
Walter Roberson el 8 de Dic. de 2018
take logs.
log(Nu) = log( C) + n * log(Re) + m * log(Pr)
This is a linear system easily fit with the \ operator

Más respuestas (0)

Categorías

Más información sobre Polynomials en Help Center y File Exchange.

Etiquetas

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by