Hello, a very common term in the Navier-Stokes equations for a gas is of the form:
density (times) (\partial f[x]/\partial t), where f[x] is a hydrodynamic field (for instance, temperature). however, it appears in the Fipy manual that the transient terms that express time derivatives have no multiplying coefficients. I’d like to solve the transient Navier Stokes equations for a gas without having to divide the whole balance equations by density, which is of course also an unknown. How can I express then a term of the form above in Fipy? Thank you very much, Dr. Francisco Vega Reyes Departamento de Física, Universidad de Extremadura, 06071 Badajoz, Spain fv...@unex.es _______________________________________________ fipy mailing list fipy@nist.gov http://www.ctcms.nist.gov/fipy [ NIST internal ONLY: https://email.nist.gov/mailman/listinfo/fipy ]