Numerical Simulation of Helicopter Wake Evolution, Performance and Trim

Autor:	Martin Embacher, Felix Bensing, Benjamin Kutz, Manuel Keßler, Martin Hollands, Ewald Krämer
Rok vydání:	2012
Předmět:	Computer simulation business.industry Computer science Rotor (electric) Aerodynamics Gas dynamics Wake law.invention Computer Science::Robotics Ground effect (aerodynamics) Aeromechanics law Tail rotor Shape optimization Free flight Aerospace engineering Helicopter rotor business
Zdroj:	High Performance Computing in Science and Engineering '11 ISBN: 9783642238680 High Performance Computing in Science and Engineering
DOI:	10.1007/978-3-642-23869-7_30
Popis:	This paper gives an overview over recent activities in the field of helicopter aeromechanics simulation at the Institute for Aerodynamics and Gas Dynamics (IAG) at the University of Stuttgart. Numerical investigations on hovering isolated rotors in ground effect, main rotor blade shape optimization and finally computations of the entire helicopter in free flight conditions are included. For the hovering rotor good agreement with experimental data has been found for hovering out of ground effect as well as in close proximity to the ground. During our investigations on blade shape optimization a grid convergence study shows asymptotic behavior of relevant parameters such as the power coefficient or control angles. Further generalization of the fluid-structure coupling procedure allows the simulation of a helicopter in free flight condition. The extended coupling and trim method yields good agreement with flight test data. All simulations were carried out on the NEC Nehalem cluster platform of the HLRS and performance was evaluated during one of the optimization computations.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::57bdfd7f0815f82044be6b35ba7c0225 https://doi.org/10.1007/978-3-642-23869-7_30 Zobrazit plný text záznamu