CACTUS geometry for Sandia turbine.
In an effort to support marine hydrokinetic (MHK) developers and companies as they advance their technologies, Sandia recently released an open-source version of CACTUS (Code for Axial and Cross-flow TUrbine Simulation) and an accompanying user’s manual authored by Jon Murray and Matt Barone (both in Sandia’s Aerosciences Dept.).
Sandia developed CACTUS to design hydrokinetic turbines and to analyze hydrodynamic performance. Based on a vortex wake method, simulations can be completed in minutes, allowing users to efficiently explore many design iterations.
A comparison of power coefficient between experiment and CACTUS simulation.
CACTUS can also be coupled with Sandia’s optimization code, DAKOTA, allowing users to semi-automatically optimize the hydrodynamic performance of hydrokinetic turbine designs. It simulates arbitrary geometries, including cross- and axial-flow rotors.