• Nils Koppels Allé, 403, 222

    2800 Kgs. Lyngby

    Denmark

20042019
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Research Output 2005 2019

2019

Helical self-similarity of tip vortex cores

Okulov, V., Kabardin, I. K., Mikkelsen, R. F., Naumov, I. & Sørensen, J. N., 2019, In : Journal of Fluid Mechanics. 859, p. 1084-1097

Research output: Contribution to journalJournal articleResearchpeer-review

Wakes and wake interaction between rotors and discs in an experimental model array

Okulov, V. L., Kabardin, I. K., Litvinov, I. V., Mikkelsen, R. F., Naumov, I. V. & Sørensen, J. N., 2019, Proceedings of the Wake Conference 2019. 1 ed. IOP Publishing, Vol. 1256. 8 p. 012013. (Journal of Physics: Conference Series; No. Conf. 1, Vol. 1256).

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

2018
10 Downloads (Pure)

Aerodynamic effect of icing/rain impacts on super-hydrophobic surfaces

Okulova, N., Taboryski, R. J., Sørensen, J. N., Shtork, S. I. & Okulov, V., 2018, In : Aip Conference Proceedings. 2027, 1, 030045.

Research output: Contribution to journalJournal articleResearchpeer-review

Open Access
File
39 Downloads (Pure)

Asymptotic expansions for motion of a curved vortex filament tube will elliptically deformed core

Okulov, V. & Fukumoto, Y., 2018, p. 25-28.

Research output: Contribution to conferencePaperResearchpeer-review

Open Access
File
182 Downloads (Pure)

Development and interaction of rotor wakes

Sørensen, J. N., Mikkelsen, R. F., Kabardin, I. K., Litvinov, I. V., Naumov, I. V. & Okulov, V. L., 2018, In : Journal of Physics: Conference Series. 1037, 7, 7 p., 072045.

Research output: Contribution to journalConference articleResearchpeer-review

Open Access
File

Influence of repeating elements on the far wake characteristics

Litvinov, I. V., Yusupov, R. R., Naumov, I. V. & Okulov, V., 2 Nov 2018, 19th International Conference on the Methods of Aerophysical Research, ICMAR 2018. American Institute of Physics, Vol. 2027. 040042

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Instabilities in the Wake of an Inclined Prolate Spheroid

Andersson, H., Jiang, F. & Okulov, V., 2018, Computational Modelling of Bifurcations and Instabilities in Fluid Dynamics. A. G. (ed.). Springer, p. 311-352 42 p. (Computational Methods in Applied Sciences, Vol. 50).

Research output: Chapter in Book/Report/Conference proceedingBook chapterResearchpeer-review

69 Downloads (Pure)

Real history of helical vortices: theory and applications. Annex: comments on “motion of a helical vortex by o. Velasco fuentes”

Okulov, V., Sørensen, J. N., Fukumoto, Y. & Wood, D. H., 2018, p. 71-72.

Research output: Contribution to conferenceConference abstract for conferenceResearchpeer-review

Open Access
File

Self-similarity and helical symmetry of various vortex wakes

Kabardin, I. K., Mikkelsen, R. F., Naumov, I. V., Okulov, V. L., Sørensen, J. N. & Velte, C. M., 2018, AIP Conference Proceedings. American Institute of Physics, Vol. 2027. 8 p. 030115. (A I P Conference Proceedings Series).

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

142 Downloads (Pure)

Self-Similarity and Helical Symmetry of Various Vortex Wakes

Kabardin, I. K., Mikkelsen, R. F., Naumov, I. V., Okulov, V. L., Sørensen, J. N. & Velte, C. M., 2018. 7 p.

Research output: Contribution to conferencePaperResearchpeer-review

Open Access
File

The role of laboratory testing in the development of rotor aerodynamics (review)

Okulov, V., 2018, In : Thermophysics and Aeromechanics. 25, 1, 20 p.

Research output: Contribution to journalJournal articleResearchpeer-review

2017
132 Downloads (Pure)

An influence of the different incoming wake-like flows on the rotor vibrations: Paper

Naumov, I. V., Kabardin, I. K., Mikkelsen, R. F., Okulov, V. & Sørensen, J. N., 2017, Wake Conference 2017 . IOP Publishing, Vol. 854. 9 p. 012034. (Journal of Physics: Conference Series).

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Open Access
File
85 Downloads (Pure)

An interaction of impacting droplets with superhydrophobic coatings

Okulova, N., Okulov, V. & Taboryski, R. J., 2017.

Research output: Contribution to conferenceConference abstract for conferenceResearchpeer-review

Open Access
File

Loss of efficiency in a coaxial arrangement of a pair of wind rotors

Okulov, V. L., Naumov, I. V., Tsoy, M. A. & Mikkelsen, R. F., 2017, In : Thermophysics and Aeromechanics. 24, 4, p. 545-551

Research output: Contribution to journalJournal articleResearchpeer-review

Nonlinear blade element-momentum analysis of Betz-Goldstein rotors

Wood, D. H. & Okulov, V., 2017, In : Renewable Energy. 107, p. 542-549

Research output: Contribution to journalJournal articleResearchpeer-review

Power Properties of Two Interacting Wind Turbine Rotors

Okulov, V., Mikkelsen, R. F., Sørensen, J. N., Naumov, I. & Tsoy, M. A., 2017, In : Journal of Energy Resources Technology. 139, 5, 6 p., 051210-1.

Research output: Contribution to journalJournal articleResearchpeer-review

Self-similarity of far wake behind tandem of two disks

Okulov, V., Litvinov, I. V., Naumov, I. V. & Mikkelsen, R. F., 2017, In : Journal of Engineering Thermophysics. 26, 2, p. 154-159

Research output: Contribution to journalJournal articleResearchpeer-review

61 Downloads (Pure)

Superhydrophobic hierarchical structures produced with extrusion coating

Okulova, N., Okulov, V. & Taboryski, R. J., 2017.

Research output: Contribution to conferenceConference abstract for conferenceResearchpeer-review

Open Access
File

The Contribution of Kawada to the Analytical Solution for the Velocity Induced by a Helical Vortex Filament and Modern Applications of Helical Vortices

Fukumoto, Y., Okulov, V. & Wood, D. H., 2017, Mathematical Analysis of Continuum Mechanics and Industrial Applications. Springer, p. 167-174 (Mathematics for Industry, Vol. 26).

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

171 Downloads (Pure)

Wake developments behind different configurations of passive disks and active rotors: Paper

Okulov, V., Litvinov, I. V., Mikkelsen, R. F., Naumov, I. V. & Sørensen, J. N., 2017, Wake Conference 2017. Vol. 854. 6 p. 012035. (Journal of Physics: Conference Series).

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Open Access
File
2016
136 Downloads (Pure)

An acentric rotation of helical vortex pair

Okulov, V., 2016. 4 p.

Research output: Contribution to conferenceConference abstract for conferenceResearchpeer-review

Open Access
File

An acentric rotation of two helical vortices of the same circulations

Okulov, V., 2016, In : Regular and Chaotic Dynamics. 21, 3, p. 267–273

Research output: Contribution to journalJournal articleResearchpeer-review

Application of helical vortex solutions to determine wind turbine tip loss

Wood, D. H., Okulov, V. & Bhattacharjee, D., 2016, EUROMECH Colloquium - Dynamics of Concentrated Vortices. p. 95-96

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

166 Downloads (Pure)

Comparison of classical methods for blade design and the influence of tip correction on rotor performance

Sørensen, J. N., Okulov, V., Mikkelsen, R. F., Naumov, I. V. & Litvinov, I. V., 2016, In : Journal of Physics: Conference Series (Online). 753, 10 p., 022020.

Research output: Contribution to journalConference articleResearchpeer-review

Open Access
File
117 Downloads (Pure)

Comparison of the far wake behind dual rotor and dual disk configurations

Okulov, V., Mikkelsen, R. F., Naumov, I. V., Litvinov, I. V., Gesheva, E. & Sørensen, J. N., 2016, In : Journal of Physics: Conference Series (Online). 753, 3, 7 p., 032060.

Research output: Contribution to journalConference articleResearchpeer-review

Open Access
File

Direct calculation of wind turbine tip loss

Wood, D. H., Okulov, V. & Bhattacharjee, D., 2016, In : Renewable Energy. 95, p. 269-276 8 p.

Research output: Contribution to journalJournal articleResearchpeer-review

265 Downloads (Pure)

Estimation of wake propagation behind the rotors of wind-powered generators

Naumov, I. V., Mikkelsen, R. F. & Okulov, V., 2016, In : Thermal Engineering. 63, 3, p. 208-213 6 p.

Research output: Contribution to journalJournal articleResearchpeer-review

Open Access
File
142 Downloads (Pure)

Experimental investigation of wake evolution behind a couple of flat discs in a hydrochannel

Naumov, I. V., Litvinov, I. V., Mikkelsen, R. F. & Okulov, V., 2016, In : Thermophysics and Aeromechanics. 23, 5, p. 657-666

Research output: Contribution to journalJournal articleResearchpeer-review

Open Access
File
158 Downloads (Pure)

Extension of Goldstein's circulation function for optimal rotors with hub

Okulov, V., Sørensen, J. N. & Shen, W. Z., 2016, In : Journal of Physics: Conference Series (Online). 753, 5 p., 022018.

Research output: Contribution to journalConference articleResearchpeer-review

Open Access
File
125 Downloads (Pure)

Kawada's Contribution to Induced Velocity by Helical Vortices with Application to Propeller Theory

Fukumoto, Y., Okulov, V. & Wood, D. H., 2016. 1 p.

Research output: Contribution to conferenceConference abstract for conferenceResearchpeer-review

Open Access
File
249 Downloads (Pure)

Multiple vortex structures in the wake of a rectangular winglet in ground effect

Velte, C. M., Hansen, M. O. L. & Okulov, V. L., 2016, In : Experimental Thermal and Fluid Science. 72, p. 31–39

Research output: Contribution to journalJournal articleResearchpeer-review

Open Access
File

On the peculiar structure of a helical wake vortex behind an inclined prolate spheroid

Jiang, F., Andersson, H. I., Gallardo, J. P. & Okulov, V., 2016, In : Journal of Fluid Mechanics. 801, p. 1-12

Research output: Contribution to journalJournal articleResearchpeer-review

235 Downloads (Pure)

Performance and wake conditions of a rotor located in the wake of an obstacle

Naumov, I. V., Kabardin, I. K., Mikkelsen, R. F., Okulov, V. & Sørensen, J. N., 2016, In : Journal of Physics: Conference Series (Online). 753, 3, 7 p., 032051.

Research output: Contribution to journalConference articleResearchpeer-review

Open Access
File

Power Properties of Two Interacting Wind Turbine Rotors

Okulov, V., Mikkelsen, R. F., Sørensen, J. N., Naumov, I. V. & Tsoy, M. A., 2016, Proceedings of the 2nd International Conference On Next Generation Wind Energy. 8 p.

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

2015

Comparison of far wakes behind a solid disk and a three-blade rotor

Litvinov, I. V., Naumov, I. V., Okulov, V. & Mikkelsen, R. F., 2015, In : Journal of Flow Visualization and Image Processing. 22, 4, p. 175-183

Research output: Contribution to journalJournal articleResearchpeer-review

Efficiency of operation of wind turbine rotors optimized by the Glauert and Betz methods

Okulov, V., Mikkelsen, R. F., Litvinov, I. V. & Naumov, I. V., 2015, In : Technical Physics. 60, 11, p. 1632-1636 5 p.

Research output: Contribution to journalJournal articleResearchpeer-review

Rotor theories by Professor Joukowsky: Momentum theories

van Kuik, G. A. M., Sørensen, J. N. & Okulov, V. L., 2015, In : Progress in Aerospace Sciences. 73, p. 1-18 18 p.

Research output: Contribution to journalJournal articleResearchpeer-review

The Contribution of Kawada to the Analytical Solution for the Velocity Induced by a Helical Vortex Filament

Fukumoto, Y., Okulov, V. L. & Wood, D. H., 2015, In : Applied Mechanics Reviews. 67, 6, 6 p., 060801.

Research output: Contribution to journalJournal articleResearchpeer-review

The rotor theories by Professor Joukowsky: Vortex theories

Okulov, V. L., Sørensen, J. N. & Wood, D. H., 2015, In : Progress in Aerospace Sciences. 73, p. 19-46 28 p.

Research output: Contribution to journalJournal articleResearchpeer-review

191 Downloads (Pure)

Wake effect on a uniform flow behind wind-turbine model

Okulov, V., Naumov, I. V., Mikkelsen, R. F. & Sørensen, J. N., 2015, In : Journal of Physics: Conference Series (Online). 625, 8 p., 012011.

Research output: Contribution to journalConference articleResearchpeer-review

Open Access
File
2014

A regular Strouhal number for large-scale instability in the far wake of a rotor

Okulov, V., Naumov, I. V., Mikkelsen, R. F., Kabardin, I. K. & Sørensen, J. N., 2014, In : Journal of Fluid Mechanics. 747, p. 369-380

Research output: Contribution to journalJournal articleResearchpeer-review

458 Downloads (Pure)

Design of low noise wind turbine blades using Betz and Joukowski concepts

Shen, W. Z., Hrgovan, I., Okulov, V., Zhu, W. J. & Madsen, J., 2014, In : Journal of Physics: Conference Series (Online). 524, 1, 8 p., 012131.

Research output: Contribution to journalConference articleResearchpeer-review

Open Access
File

Diagnostics of BubbleMode Vortex Breakdown in Swirling Flow in a Large-Aspect-Ratio Cylinder

Kulikov, D. V., Mikkelsen, R. F., Naumov, I. & Okulov, V., 2014, In : Technical Physics Letters. 40, 2, p. 181-184 4 p.

Research output: Contribution to journalJournal articleResearchpeer-review

185 Downloads (Pure)

Experimental investigation of the wake behind a model of wind turbine in a water flume

Okulov, V., Naumov, I., Kabardin, I., Mikkelsen, R. F. & Sørensen, J. N., 2014, In : Journal of Physics: Conference Series (Online). 555, 12 p., 012080.

Research output: Contribution to journalConference articleResearchpeer-review

Open Access
File
160 Downloads (Pure)

Limit cases for rotor theories with Betz optimization

Okulov, V., 2014, In : Journal of Physics: Conference Series (Online). 524, 1, 7 p., 012129.

Research output: Contribution to journalConference articleResearchpeer-review

Open Access
File
4889 Downloads (Pure)

PIV and LDA measurements of the wake behind a wind turbine model

Naumov, I. V., Mikkelsen, R. F., Okulov, V. & Sørensen, J. N., 2014, In : Journal of Physics: Conference Series (Online). 524, 1, 10 p., 012168.

Research output: Contribution to journalConference articleResearchpeer-review

Open Access
File

Stagnation zone formation on the axis of a closed vortex flow

Naumov, I. V., Okulov, V. & Mikkelsen, R. F., 2014, In : Thermophysics and Aeromechanics. 21, 6, p. 767-770

Research output: Contribution to journalJournal articleResearchpeer-review

153 Downloads (Pure)

Testing of Rotor Vortex Theories Using Betz Optimization

Okulov, V., 2014, In : Doklady Physics. 59, 1, p. 16–20

Research output: Contribution to journalJournal articleResearchpeer-review

Open Access
File
160 Downloads (Pure)

Measurement of the rotor wake using PIV on a scaled turbine rotor in a water flume

Mikkelsen, R. F., Okulov, V., Meyer, K. E., Naumov, I., Karbardin, I. & Sørensen, J. N., 2013

Research output: Non-textual formSound/Visual production (digital)Research

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