Challenges in the calibration and validation of hydrodynamic numerical 3D models

摘要

The use of hydrodynamic numerical 3D models in engineering companies gets more and more popular, mainly driven by the progress in the field of computer technology. Nevertheless, the model application is still demanding and requires sound experience. Many challenges may have to be faced in the calibration and validation process, such as the limited availability of reference data or the choice of a turbulence model suitable for the problem at hand. In this regard, some aspects will be discussed herein and illustrated by two practical examples: channel flow with transition to a settling basin and the improvement of turbine approach flow by optimization of geometry.