In steam power plants condensation already starts in the flow path of the low pressure part of the steam turbine, which leads to a complex three-dimensional two-phase flow. Wetness losses are caused due to thermodynamic and mechanical relaxation processes during condensation and droplet transport. The present investigation focuses on the unsteady effects due to rotor-stator interaction on the droplet formation process. Results of unsteady three dimensional flow simulations of a two-stage steam turbine are presented, whereby this is the first time that non-equilibrium condensation is considered in such simulations. The numerical approach is based on RANS equations, which are extended by a wet steam specific nucleation and droplet growth model. Despite the use of a high performance cluster the unsteady simulation has a considerably high simulation time of approximately 60 days by use of 48 CPUs. © Springer-Verlag Berlin Heidelberg 2012.
CITATION STYLE
Starzmann, J., Casey, M. V., & Mayer, J. F. (2012). Unsteady numerical study of wet steam flow in a low pressure steam turbine. In High Performance Computing in Science and Engineering 2011 - Transactions of the High Performance Computing Center, Stuttgart, HLRS 2011 (pp. 437–450). Springer Verlag. https://doi.org/10.1007/978-3-642-23869-7_32
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