Shear-slip mesh update in 3D computation of complex flow problems with rotating mechanical components. (English) Zbl 1012.76042

Summary: We present a three-dimensional computational technique for simulation of complex, real-world flow problems with fast-rotating mechanical components. This technique is based on the deformable-spatial-domain/stabilized space-time (DSD/SST) formulation, shear-slip mesh update method (SSMUM), and on an efficient parallel implementation for distributed-memory parallel computing platforms. The DSD/SST formulation was developed earlier for flow problems with moving boundaries and interfaces, including flows with moving mechanical components. The DSD/SST formulation requires, as a companion method, an effective mesh update strategy, especially in complex flow problems. The SSMUM was developed to meet the mesh update requirements in simulation of flow problems with fast translations, and recently, with a new version of SSMUM, fast rotations. As an example of simulations that can be carried out by this technique, we present computation of flow around a helicopter with its rotor in motion.


76M10 Finite element methods applied to problems in fluid mechanics
76D05 Navier-Stokes equations for incompressible viscous fluids
76U05 General theory of rotating fluids
65Y05 Parallel numerical computation
Full Text: DOI


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