A new Navier-Stokes solver was developed for the simulation of the rotationally symmetric flow between the rotating impeller and the casing of turbo machines. For the description of the problem the curvilinear cylindrical coordinate system was selected. Therefore mathematical operations were accomplished in the Riemannian space of the differential geometry. In order to capture the flow at high, technically relevant Reynolds numbers, different turbulence models were implemented.
In the momentum equations in radial as well as in circumferential direction additionally source terms arise. In the sense of the finite volume method FVM the volume integrals over these source terms could, physical motivated, be transformed into the surface integrals directly.
For technical application with complex geometry the multi-block strategy was pursued.
With the developed solver time-saving and thus economical investigations become possible, in particular in optimization processes.
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A new Navier-Stokes solver was developed for the simulation of the rotationally symmetric flow between the rotating impeller and the casing of turbo machines. For the description of the problem the curvilinear cylindrical coordinate system was selected. Therefore mathematical operations were accomplished in the Riemannian space of the differential geometry. In order to capture the flow at high, technically relevant Reynolds numbers, different turbulence models were implemented.
In the momentum...
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