CFD modelling of rivers and reservoirs
CFD modelling of rivers and reservoirs
Abstract
A brief introduction to the science of computational fluid dynamic (CFD)
is given, including a description of the equations being solved and domain
decomposition in a grid. Some examples are given for modelling rivers and
reservoirs, with emphasis on engineering run-of-the-river hydropower
projects. Calculations of water surface elevations and sediment flushing
and deposition in reservoirs are included. The results are compared with
field and laboratory experiments. Two models are used: TELEMAC, based on
the finite element method, and SSIIM, based on the finite volume method.
Some limitations with the methods are discussed together with future
developments of CFD models in context of river and reservoir modelling.