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Simulation of Fluid Dynamics by CFD
Numerical simulations of complex flow processes by CFD (Computational Fluid Dynamics) are an integrated part of the research and development with EKATO. CFD gives a precise insight into the flow patterns around the impellers and in the agitated tank.
Impellers can be optimized by CFD to meet the process requirements efficiently with a minimum of power input.
First, the general flow field and the local velocities must be determined. This is needed to avoid areas of low mixing intensity and for the optimum position of feeding devices or heat exchangers. The hydraulic loads on such components will be derived from CFD, and these loads are the input for their design by the Finite Element Analysis (FEA). The post processing tools of CFD are ideal to visualize the actual flow situation.
The knowledge of the turbulence intensity is the basis for the design of many agitated processes. Dispersion of gases or liquids or the stress on sensitive crystals is determined by turbulence parameters. CFD provides the local distribution of such parameters, hence allowing of the comparison of different impeller types regarding an optimum process result. The heat transfer coefficients on coils, tube bundles or plates can be calculated this way, even at very complex geometries.
The blending progress in an agitated tank -in continuous or batch operation- can be followed by the resulting concentration and temperature profiles. Not only dead zones can be detected and avoided. Beyond this, an optimum concept of reactors, crystallizers or fermenters can be worked out.
EKATOs comprehensive know how in the mixing technology is not only based on the state of the art facilities in the lab and pilot plants of the R&D department. Modern tools as numerical fluid dynamics CFD supplement those ideally. These tools - testing and simulations - offer extensive services for the customers to develop their production processes for maximum profit