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DEVELOPMENTS AND APPLICATIONS IN ENGINEERING COMPUTATIONAL TECHNOLOGY
Edited by: B.H.V. Topping, J.M. Adam, F.J. Pallarés, R. Bru and M.L. Romero
Computational Modelling of Flows through Rotating Systems
T.N. Croft, D. Carswell, M. Cross, D. McBride, S. Rolland, A.K. Slone and A.J. Williams
Centre for Civil and Computational Engineering, School of Engineering, Swansea University, United Kingdom
T.N. Croft, D. Carswell, M. Cross, D. McBride, S. Rolland, A.K. Slone, A.J. Williams, "Computational Modelling of Flows through Rotating Systems", in B.H.V. Topping, J.M. Adam, F.J. Pallarés, R. Bru and M.L. Romero, (Editors), "Developments and Applications in Engineering Computational Technology", Saxe-Coburg Publications, Stirlingshire, UK, Chapter 6, pp 131-148, 2010. doi:10.4203/csets.26.6
Keywords: computational fluid dynamics, parallel computing, scalability, rotating systems.
There is an increasing demand for the computational modelling of flows through systems which are rotating. The geometries involved here tend to be quite complex and so the computational challenge is significant in a number of respects.
There are really three approaches to capturing the impact of rotating machinery in complex flows:
This chapter summarises each of these approaches within a finite volume unstructured mesh code context and discuss where and how they might be used in a challenging range of applications on high performance parallel computing systems, involving examples from:
The sink-source method and the non-inertial frame approach are essentially adaptations of the standard Navier-Stokes flow equations – they are relatively straightforward to implement and work as well as solving the standard flow equations and are as scalable in parallel as well. The method which contains the rotating mesh requires additional data exchange due to one surface mesh sliding over another. The method described in this contribution appears to impact only marginally on the scalability of the standard CFD code.
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