On the stability of multiple helical vortices

By V. Okulov. Journal of Fluid Mechanics, 2004

173 citations recorded by the source corpus.

Subfields: Computational Mechanics, Statistical and Nonlinear Physics

View Paper: https://www.semanticscholar.org/paper/59d6717eb96f64bf476d9282903e6fa4cb48e6de

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In Computational Mechanics

In Statistical and Nonlinear Physics

Citations in the corpus

Tip-vortex instability and turbulent mixing in wind-turbine wakes (2015, background): “Most of the research on the stability of vortical structures is valid for a wide range of applications, from helicopters (Leishman 1998) to wind turbines (Okulov 2004) and propeller rotors (Felli et al. 2011).”
Mechanisms of evolution of the propeller wake in the transition and far fields (2011, background): “…most of the stability models and theories concerning the stability of helical vortices can be applied not only to propellers but also to helicopter rotors and wind turbines (see Okulov 2004; Okulov & Sorensen 2007, 2010 for wind turbine rotors; and Leishman et al. 1998 for helicopter rotors).”
Stability of helical tip vortices in a rotor far wake (2007, methodology): “Comparing the vorticity distributions with measured data shows that the L-vortex fits laminar velocity profiles well whereas the S-vortex is a suitable approximation for turbulent vortices (see Murakhtina & Okulov 2000; Martemianov & Okulov 2004).”
On the wake dynamics of a propeller operating in drift (2014, background): “Recently, in a series of works, Okulov (2004) and Okulov & Sorensen (2007, 2010) developed a general theory for the stability analysis of equilibrium configuration for a system of helical vortices and demonstrated its validity for the description of the far wake of a wind turbine.”
Large eddy simulation of propeller wake instabilities (2017, background): “Okulov (2004) analytically obtained the solution to this problem as well, and reached the conclusion that Joukowski’s far wake model is unconditionally unstable for all pitch values.”
On the interaction between a turbulent open channel flow and an axial-flow turbine (2013, background): “These structures exhibit spiral-like motion, and play an important role in the dynamics of the wake (Okulov 2004).”
Dynamic wake meandering modeling (2007, methodology): “[5] Okulov, V.L. and Sørensen, J.N. (2007).”