Le Chuiton, Frédéric Actuator disc modelling for helicopter rotors. (English) Zbl 1133.76355 Aerosp. Sci. Technol. 8, No. 4, 285-297 (2004). Summary: The helicopter project CHANCE contains, among other developments, the quasi-steady approximation to modelling rotors with actuator discs. This reduces the cost of an unsteady simulation down to a stationary one. In testing existing approaches in the literature, the source term implementation proved to perform best, especially in forward flight: source terms located on the disc bottom side impart impulse and energy to the fluid. These are obtained from a loose coupling between two DLR codes: the flow solver FLOWer and the rotor code S4. The latter provides a rotor map, a radial and azimuthal force distribution, to the former converting it to the actuator disc map (source terms). Low velocities are accounted for using preconditioning. A more flexible Chimera approach can be used. The actuator disc feature has been developed in a parallel framework for shorter turn-around times. Cited in 2 Documents MSC: 76U05 General theory of rotating fluids 76M12 Finite volume methods applied to problems in fluid mechanics Keywords:flow server FLOWer; rotor code S4; Chimera approach Software:MEGAFLOW PDFBibTeX XMLCite \textit{F. Le Chuiton}, Aerosp. Sci. Technol. 8, No. 4, 285--297 (2004; Zbl 1133.76355) Full Text: DOI