Unterschiedliche Berechnungsmöglichkeiten von radialen Kreiselpumpen

Various Approaches to Calculations on Radial Centrifugal Pumps Computational fluid dynamics and present day computational hardware have attained a high level of sophistication. This paper reports numerical calculations on centrifugal pumps for steady state and transient conditions. Calculations carried out for one channel of the impeller and for the complete pump are presented. Flow between impeller and pump case was also considered. Very good agreement between simulations and experiments was obtained. The accuracy and the information content of the calculations rise with increasing complexity of the simulation.     

Simulation komplexer fluider Transportvorgänge in der Verfahrenstechnik

Simulation of Complex Liquid Transport Processes in Chemical Engineering The numerical calculation of flows has become a universal tool in several scientific and technical applications to be able to better understand or control the transport processes in fluids. Still, in many areas of chemical engineering technology the use of numerical simulations is less developed. One of the reasons for this is the low reliability and efficiency of standard CFD techniques. How can simulation methods in combination with alternative grid generation techniques be used to generate reliable predictions of the operation behavior relation of components in the chemical industry? A new way is demonstrated here, whereby the described calculation techniques are based on one of the most rigorous models of the transport processes of fluids, namely the Boltzmann equation.