Computational Fluid Dynamics (CFD) provides a qualitative (and sometimes even quantitative) prediction of fluid
flows. CFD enables scientists and engineers to perform ‘numerical experiments (i.e. computer simulations) in a ‘virtual flow
laboratory’. Difference method.
UNET package. Fluid motion is controlled by the basic principles of conservation of mass, energy and momentum, which form
the basis of fluid mechanics and hydraulic engineering. Complex flow situations must be solved using empirical approximations
and numerical models, which are based on derivations of the basic principles (backwater equation, Navier-Stokes equation etc.).
All numerical models are required to make some form of approximation to solve these principles, and consequently all have their
limitations. The study of hydraulics and fluid mechanics is founded on the three basic principles of conservation of mass, energy
and momentum. Real-life situations are frequently too complex to solve without the aid of numerical models.
