I have just started the book[1] but I like it already. So far, it provides simple and complete derivations of the equations of fluid dynamics. The book was referenced by the authors of “OpenFOAM Technology Primer, v.2012”.
References:
[1] Hirsch, Charles. (2007). Numerical Computation of Internal and External Flows: The Fundamentals of Computational Fluid Dynamics. Elsevier #CFDBooks #BeginningOpenFOAM
An Experiment In Life 