General Recommendations for Conceiving and Testing Your Code

Abstract

This chapter is dedicated to beginners and students of numerical fluid mechanics and heat transfer when they are faced with the need to write their algorithms and codes for the assignment or dissertations. The idea is just to have guidelines and not rules that are used when full commercial software is developed and tested. For these, there are plenty of books in software development, since validation of engineering codes is a quite complex activity. Simple problems with analytical solutions are presented for comparisons. Comments about checking convergence of the iterative procedures, size of the mesh when checking your code, among others recommendations, are given.