![]() ![]() These benchmark tests were performed at best efficiency point (BEP) with runner speed equal to 320.13213 and guide vane angle at 9. Interface-I and II were connected with Frozen rotor interface between the stationary and the rotating domain. The inlet and outlet boundary condition were total pressure and static pressure, respectively. In Figure 1, the computational domain with boundary conditions are shown. ![]() More details about the flow parameters and results can be found in. The chosen benchmark case is based on the simulation of internal flow of the Francis-99 runner. The parameters chosen in the case are presented in Table 1 below. It was also a part of the study from Nordvik et al. These benchmark tests were performed as a part of Nordvik’s master thesis “Variable speed operations of Francis turbines”. Simulations were performed up to 512 CPU cores, with the ANSYS CFX version 19.1. Based on a few benchmark tests, the parallel performance and scalability of the CFD code CFX on the system VILJE will be presented. ![]()
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