| Autors: Panayotov, F. K., Dobrev I., Massouh F., Todorov, M. D. Title: Studying the wake contraction of the flow-field of a rotor in hover Keywords: Computation theory, Flow fields, Numerical models, Vortex fl Abstract: This article presents a comparative study of three numerical algorithms for computation of the flow-field of a rotor in hover and the net static thrust that is produced. The flow-field is induced by a series of vortex rings, modelling the near wake of the hovering rotor and a single semi-infinite vortex cylinder, accounting for the velocity deficit in the far wake. All three models are based on the vortex theory and differ in the choice of the numerical scheme for the estimation of the exact position of the vortex rings, emitted at the tips of the blades of the rotor. Thus, the numerical models perform a real-time simulation of the propagation of the vortex rings in the downwash. The first model uses an Euler-predictor scheme, while the second and third models use respectively first and second order predictor-corrector schemes. The aim of the study is to assess the rapidity and accuracy of each algorithm. For that purpose, the numerical results are compared with the experimental data, References Issue
|
Цитирания (Citation/s):
1. J. Hnidka and D. Rozehnal, Calculation of the maximum endurance of a small unmanned aerial vehicle in a hover, IOP Conference Series: Materials Science and Engineering, 2019 IOP Conf. Ser.: Mater. Sci. Eng.664 012002 (index SCOPUS) - 2019 - в издания, индексирани в Scopus или Web of Science
2. M. Thiele, D. Salassidis, M. Hornung, PROPELLER WAKE - OBJECT INTERACTION USING A FREE WAKE MODEL UTILIZING LOCAL MESH SEPARATION, 32nd Congress of the International Council of the Aeronautical Sciences, September 6-10, 2021, Shanghai, China - 2021 - от чужди автори в чужди издания, неиндексирани в Scopus или Web of Science
Вид: публикация в национален форум с межд. уч., публикация в издание с импакт фактор, публикация в реферирано издание, индексирана в Scopus
