I am doing a lot of simulations with cfd simulation of solidworks, which is nothing but siemens floefd, of which the true author is mentor graphics. the results obtained, once I understood how I would perform the setup of the studio, are close to the real ones obtained in the tank with a last generation load cell. In fact, now at the design level, I no longer have the need to do practical tests, which are now only done as verification and validation of the project results. does not cost little, but a good simulator, reliable, is really an added value.