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All about Computational Fluid Dynamics
An Introduction to Computational Fluid Dynamics: The Finite Volume MethodAn Introduction to Computational Fluid Dynamics: The Finite Volume Method by H. Versteeg
Buy used from: £20.00
Excellent introductory book to CFD
Computational Methods for Fluid DynamicsComputational Methods for Fluid Dynamics by Joel H. Ferziger
Buy new: £38.63 / Used from: £38.84
Good book if you are into writing your own CFD code...
INTERNAL COMBUSTION ENGINE FUNINTERNAL COMBUSTION ENGINE FUN by John B. Heywood
Buy new: £41.09 / Used from: £33.73
A little out of date but nevertheless a very good book on internal combustion engines