CFD on the Cloud

HPC-Competnece Center

Arctur prides itself in not being just another HPC infrastructure provider, but rather one which always provides personal support even to users which are not so knowledgeable of HPC, so ensuring that every HPC project achieves or even surpasses user expectations. Their motto is “More than just HPC.” As an SME, they understand the issues that other SMEs face when dealing with HPC.

The Enterprise

Stellba is a Germany-based SME working on hydropower plant maintenance, repair and overhaul, engineering and manufacturing one-of-a-kind products for the green energy sector with the goal to optimize energy efficiency.

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How HPC makes the difference

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The use of CFD software speeds up and simplifies the CFD process

This success story is an outcome of CloudFlow project(*). Checking and assessing the aerodynamic or hydrodynamic performance of newly designed geometric parts by using Computational Fluid Dynamics (CFD) is a common practice in large(r) industry. Every turbine they engineer and manufacture is different and tailored to the needs of a given specific power plant, which results in an extremely high development effort making CFD simulations a major component of Stellba’s engineering tool set.

The evaluation of the hydrodynamic performance, e.g. the prediction of the increase in energy efficiency of a newly designed or repaired turbine blade, involves many CFD simulations. The full characterisation (hill chart) of a complex hydraulic turbine may require several hundreds of such simulations, where each simulation can take several hours to several days, depending on the available computing resources. Such a complete calculation is time and cost prohibitive when using traditional desktop machines.

The use of CFD software speeds up and simplifies the CFD process, thus reducing the development costs and increasing the competitiveness of Stellba by raising the product quality and reducing the development times. By increasing the accuracy of the CFD, the end user can reduce the security margin for their efficiency guarantees, which increases the competitiveness in the market. If the efficiency of a turbine can be increased with the help of efficient and sophisticated simulation, the turbine owner will gain more electricity output from his water plant.

(*)The CloudFlow project has received funding from the European Union’s Seventh Framework Programme for research, technological development and demonstration under grant agreement No 609029.