An Accelerated 3D Navier-Stokes Solver for Flows in Turbomachines

Tobias Brandvik, Graham Pullan
Department of Engineering, Whittle Laboratory, University of Cambridge, 1 JJ Thomson Avenue, Cambridge CB3 0DY, UK
Journal of Turbomachinery, Volume 133, Issue 2, 021025, 2011


   title={An accelerated 3D Navier–Stokes solver for flows in turbomachines},

   author={Brandvik, T. and Pullan, G.},

   journal={Journal of Turbomachinery},





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A new three-dimensional Navier-Stokes solver for flows in turbomachines has been developed. The new solver is based on the latest version of the Denton codes but has been implemented to run on graphics processing units (GPUs) instead of the traditional central processing unit. The change in processor enables an order-of-magnitude reduction in run-time due to the higher performance of the GPU. The scaling results for a 16 node GPU cluster are also presented, showing almost linear scaling for typical turbomachinery cases. For validation purposes, a test case consisting of a three-stage turbine with complete hub and casing leakage paths is described. Good agreement is obtained with previously published experimental results. The simulation runs in less than 10 min on a cluster with four GPUs.
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