Photo of Robert Flemming Mikkelsen
  • Nils Koppels Allé, 403, 223

    2800 Kgs. Lyngby

    Denmark

19972021

Research output per year

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Research Output

2019

Analytical body forces in numerical actuator disc model of wind turbines

Sørensen, J. N., Nilsson, K., Ivanell, S., Asmuth, H. & Mikkelsen, R. F., 2019, In : Renewable Energy. 147, p. 2259-2271 13 p.

Research output: Contribution to journalJournal articleResearchpeer-review

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

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
215 Downloads (Pure)

Experimental Investigation of Static Stall Hysteresis and 3-Dimensional Flow Structures for an NREL S826 Wing Section of Finite Span

Sarlak, H., Frère, A., Mikkelsen, R. F. & Sørensen, J. N., 2018, In : Energies. 11, 6, 21 p., 1418.

Research output: Contribution to journalJournal articleResearchpeer-review

Open Access
File
335 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, 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

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
162 Downloads (Pure)

The triplespar campaign: Validation of a reduced-order simulation model for floating wind turbines

Lemmer, F., Yu, W., Cheng, P. W., Pegalajar Jurado, A. M., Borg, M., Mikkelsen, R. F. & Bredmose, H., 2018, ASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, Vol. 10. 10 p. OMAE2018-78119

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

UNAFLOW project: UNsteady Aerodynamics of FLOating Wind turbines

Bayati, I., Belloli, M., Bernini, L., Boldrin, D. M., Boorsma, K., Caboni, M., Cormier, M., Mikkelsen, R., Lutz, T. & Zasso, A., 2018, In : Journal of Physics: Conference Series. 1037, 7, 10 p., 072037.

Research output: Contribution to journalConference articleResearchpeer-review

Open Access
File
181 Downloads (Pure)
2017

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
151 Downloads (Pure)

Development of a Mechanical Passive Pitch System for a 500W Horizontal Axis Wind Turbine

Poryzala, T., Mikkelsen, R. F. & Kim, T., 2017, 35th Wind Energy Symposium. AIAA, 16 p.

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

High-Order Numerical Simulations of Wind Turbine Wakes: Paper

Kleusberg, E., Mikkelsen, R. F., Schlatter, P., Ivanell, S. & Henningson, D. S., 2017, Wake Conference 2017. Vol. 854. 10 p. 012025. (Journal of Physics: Conference Series; No. 1, Vol. 854).

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

Open Access
File
131 Downloads (Pure)

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

Operation and Equivalent Loads of Wind Turbines in Large Wind Farms

Andersen, S. J., Sørensen, J. N. & Mikkelsen, R. F., 2017.

Research output: Contribution to conferenceConference abstract for conferenceResearchpeer-review

Performance and Equivalent Loads of Wind Turbines in Large Wind Farms

Andersen, S. J., Sørensen, J. N. & Mikkelsen, R. F., 2017, Wake Conference 2017. Vol. 854. 10 p. 012001 . (Journal of Physics: Conference Series).

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

Open Access
File
254 Downloads (Pure)

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

The Triple Spar Campaign: Implementation and Test of a Blade Pitch Controller on a Scaled Floating Wind Turbine Model

Yu, W., Lemmer, F., Bredmose, H., Borg, M., Pegalajar Jurado, A. M., Mikkelsen, R. F., Larsen, T. S., Fjelstrup, T., Lomholt, A. K., Boehm, L., Schlipf, D., Armendariz, J. A. & Cheng, P. W., 2017, In : Energy Procedia. 137, p. 323-338

Research output: Contribution to journalConference articleResearchpeer-review

Open Access
File
387 Downloads (Pure)

The Triple Spar campaign: Model tests of a 10MW floating wind turbine with waves, wind and pitch control

Bredmose, H., Lemmer, F., Borg, M. B., Pegalajar-Jurado, A. M., Mikkelsen, R. F., Larsen, T. S., Fjelstrup, T., Yu, W., Lomholt, A. K., Boehm, L. & Armendariz, J. A., 2017, In : Energy Procedia. 137, p. 58-76

Research output: Contribution to journalJournal articleResearchpeer-review

Open Access
File
613 Downloads (Pure)

Turbulence and entrainment length scales in large wind farms

Andersen, S. J., Sørensen, J. N. & Mikkelsen, R. F., 2017, In : Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences. 375, 2091, p. 20160107-20160107 1 p.

Research output: Contribution to journalJournal articleResearchpeer-review

Open Access
1 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
198 Downloads (Pure)
2016

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
192 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
140 Downloads (Pure)

Comparison of the near-wake between actuator-line simulations and a simplified vortex model of a horizontal-axis wind turbine

Sarmast, S., Segalini, A., Mikkelsen, R. F. & Ivanell, S., 2016, In : Wind Energy. 19, 3, p. 471–481 11 p.

Research output: Contribution to journalJournal articleResearchpeer-review

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
300 Downloads (Pure)

Experimental and numerical study of a 10MW TLP wind turbine in waves and wind

Pegalajar Jurado, A. M., Hansen, A. M., Laugesen, R., Mikkelsen, R. F., Borg, M., Kim, T., Heilskov, N. F. & Bredmose, H., 2016, In : Journal of Physics: Conference Series (Online). 753, 11 p., 092007.

Research output: Contribution to journalConference articleResearchpeer-review

Open Access
File
408 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
173 Downloads (Pure)

On the aero-elastic design of the DTU 10MW wind turbine blade for the LIFES50+ wind tunnel scale model

Bayati, I., Belloli, M., Bernini, L., Mikkelsen, R. F. & Zasso, A., 2016, In : Journal of Physics: Conference Series (Online). 753, 13 p., 022028.

Research output: Contribution to journalConference articleResearchpeer-review

Open Access
File
574 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
255 Downloads (Pure)

Physical model tests for floating wind turbines

Bredmose, H., Mikkelsen, R. F., Borg, M., Pegalajar Jurado, A. M. & Lemmer, F., 2016. 1 p.

Research output: Contribution to conferenceConference abstract for conferenceResearchpeer-review

Open Access

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

Statistics of LES simulations of large wind farms

Andersen, S. J., Sørensen, J. N., Mikkelsen, R. F. & Ivanell, S., 2016, In : Journal of Physics: Conference Series (Online). 753, 3, 11 p., 032002.

Research output: Contribution to journalConference articleResearchpeer-review

Open Access
File
197 Downloads (Pure)

Validation of the actuator line and disc techniques using the New MEXICO measurements

Sarmast, S., Shen, W. Z., Zhu, W. J., Mikkelsen, R. F., Breton, S. P. & Ivanell, S., 2016, In : Journal of Physics: Conference Series (Online). 753, 3, 10 p., 032026.

Research output: Contribution to journalConference articleResearchpeer-review

Open Access
File
209 Downloads (Pure)
2015

(Large Scale) Meandering in Wind Farms

Andersen, S. J., Sørensen, J. N. & Mikkelsen, R. F., 2015

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

Open Access
File
81 Downloads (Pure)

Comparing wall modeled LES and prescribed boundary layer approach in infinite wind farm simulations

Sarlak, H., Mikkelsen, R. & Sørensen, J. N., 2015, Proceedings - 33rd Wind Energy Symposium. American Institute of Aeronautics and Astronautics, Vol. 2. p. 972-982 11 p. AIAA 2015-1470

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

Comparison between experiments and Large-Eddy Simulations of tip spiral structure and geometry

Ivanell, S., Leweke, T., Sarmast, S., Quaranta, H. U., Mikkelsen, R. F. & Sørensen, J. N., 2015, In : Journal of Physics: Conference Series (Online). 625, 10 p., 012018.

Research output: Contribution to journalConference articleResearchpeer-review

Open Access
File
222 Downloads (Pure)

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

Cross-Validation of Numerical and Experimental Studies of Transitional Airfoil Performance

Frere, A., Hillewaert, K., Sarlak, H., Mikkelsen, R. & Chatelain, P., 2015, Proceedings - 33rd Wind Energy Symposium. American Institute of Aeronautics and Astronautics, Vol. 1. p. 321-332 12 p. AIAA 2015-0499

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

Effects of Turbine Spacings in Very Large Wind Farms

Andersen, S. J., Sørensen, J. N. & Mikkelsen, R. F., 2015

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

Open Access
File
119 Downloads (Pure)

Effects of Turbine Spacings in Very Large Wind Farms

Andersen, S. J., Sørensen, J. N. & Mikkelsen, R. F., 2015.

Research output: Contribution to conferenceConference abstract for conferenceResearchpeer-review

Open Access
File
16 Downloads (Pure)

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

Experimental study of the DTU 10 MW wind turbine on a TLP floater in waves and wind

Bredmose, H., Mikkelsen, R., Hansen, A. M., Laugesen, R., Heilskov, N., Jensen, B. & Kirkegaard, J., 2015

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

File
906 Downloads (Pure)

Large-eddy simulations of the Lillgrund wind farm

Nilsson, K., Ivanell, S., Hansen, K. S., Mikkelsen, R. F., Sørensen, J. N., Breton, S-P. & Henningson, D., 2015, In : Wind Energy. 18, 3, p. 449–467 19 p.

Research output: Contribution to journalJournal articleResearchpeer-review

Quantifying the Impact of Subgrid Scale Models in Actuator-Line Based LES of Wind Turbine Wakes in Laminar and Turbulent Inflow

Chivaee, H. S., Meneveau, C., Sørensen, J. N. & Mikkelsen, R., 2015, Direct and Large-Eddy Simulation IX. Frölich, J., Kuerten, H., Geurts, B. J. & Armenio, V. (eds.). Springer, p. 169-175 (ERCOFTAC Series; No. 20).

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

Quantifying variability of Large Eddy Simulations of very large wind farms

Andersen, S. J., Witha, B., Breton, S-P., Sørensen, J. N., Mikkelsen, R. F. & Ivanell, S., 2015, In : Journal of Physics: Conference Series (Online). 625, 12 p., 012027.

Research output: Contribution to journalConference articleResearchpeer-review

Open Access
File
237 Downloads (Pure)

Simulation of wind turbine wakes using the actuator line technique

Sørensen, J. N., Mikkelsen, R. F., Henningson, D. S., Ivanell, S., Sarmast, S. & Andersen, S. J., 2015, In : Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences. 373, 2035, 16 p., 20140071.

Research output: Contribution to journalJournal articleResearchpeer-review

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
216 Downloads (Pure)
2014

Aerodynamic behaviour of NREL S826 airfoil at Re=100,000

Chivaee, H. S., Mikkelsen, R. F., Sarmast, S. & Sørensen, J. N., 2014, In : Journal of Physics: Conference Series (Online). 524, 1, 11 p., 012027.

Research output: Contribution to journalConference articleResearchpeer-review

Open Access
File
494 Downloads (Pure)

Analysis of long distance wakes of Horns Rev I using actuator disc approach

Eriksson, O., Mikkelsen, R. F., Hansen, K. S., Nilsson, K. & Ivanell, S., 2014, In : Journal of Physics: Conference Series (Online). 555, 10 p., 012032.

Research output: Contribution to journalConference articleResearchpeer-review

Open Access
File
163 Downloads (Pure)

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