Zobrazeno 1 - 10
of 42
pro vyhledávání: '"J. N. Sørensen"'
Autor:
J. N. Sørensen
Publikováno v:
Wind Energy Science, Vol 8, Pp 1017-1027 (2023)
A new generalized analytical model for representing body forces in numerical actuator disc models of wind turbines is proposed and compared to results from a blade element momentum (BEM) model. The model is an extension of a previously developed load
Externí odkaz:
https://doaj.org/article/b8851d497a7b4812baff9aa2e5151ebc
Publikováno v:
Wind Energy Science, Vol 8, Pp 363-382 (2023)
To simulate transient wind turbine wake interaction problems using limited wind turbine data, two new variants of the actuator line technique are proposed in which the rotor blade forces are computed locally using generic load data. The proposed mode
Externí odkaz:
https://doaj.org/article/4eb89ad8031c47fbb75e2da8f6382fe6
Publikováno v:
Wind Energy Science, Vol 5, Pp 1689-1703 (2020)
A total of 18 high-fidelity simulations of large wind farms have been performed by three different institutions using various inflow conditions and simulation setups. The setups differ in how the atmospheric turbulence, wind shear and wind turbine ro
Externí odkaz:
https://doaj.org/article/ea74a78289c048b79f275041aef654ad
Publikováno v:
Wind Energy Science, Vol 5, Pp 1487-1505 (2020)
Laminar-turbulent transition behavior of a wind turbine blade section is investigated in this study by means of field experiments and 3-D computational fluid dynamics (CFD) rotor simulations. The power spectral density (PSD) integrals of the pressure
Externí odkaz:
https://doaj.org/article/05c6ad1ae27e4724bf36637f6205226d
Autor:
G. A. M. van Kuik, J. Peinke, R. Nijssen, D. Lekou, J. Mann, J. N. Sørensen, C. Ferreira, J. W. van Wingerden, D. Schlipf, P. Gebraad, H. Polinder, A. Abrahamsen, G. J. W. van Bussel, J. D. Sørensen, P. Tavner, C. L. Bottasso, M. Muskulus, D. Matha, H. J. Lindeboom, S. Degraer, O. Kramer, S. Lehnhoff, M. Sonnenschein, P. E. Sørensen, R. W. Künneke, P. E. Morthorst, K. Skytte
Publikováno v:
Wind Energy Science, Vol 1, Pp 1-39 (2016)
The European Academy of Wind Energy (eawe), representing universities and institutes with a significant wind energy programme in 14 countries, has discussed the long-term research challenges in wind energy. In contrast to research agendas addressi
Externí odkaz:
https://doaj.org/article/e57645507ee84c799ad4434a33db8ce2
Publikováno v:
Mathematical Modelling and Analysis, Vol 4, Iss 1 (1999)
This paper deals with the simulation of 3‐D rotating flows based on the velocity‐vorticity formulation of the Navier‐Stokes equations in cylindrical coordinates. The governing equations are discretized by a finite difference method. The solutio
Externí odkaz:
https://doaj.org/article/880c143f2fdc46bb811dd1ad71ba4f09
Autor:
M. P. van der Laan, S. J. Andersen, P.-E. Réthoré, M. Baungaard, J. N. Sørensen, N. Troldborg
Publikováno v:
Journal of Physics: Conference Series. 2265:022030
Wind farm Annual Energy Production (AEP) calculations are required to design energy efficient wind farm layouts. We investigate methods that can reduce the computational effort of AEP calculations using Reynolds-averaged Navier-Stokes simulations of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::228dee5fbc65cd301c6300a2a53f6e1d
https://doi.org/10.1088/1742-6596/2265/2/022030
https://doi.org/10.1088/1742-6596/2265/2/022030
Autor:
V. L. Okulov, B. R. Sharifullin, N. Okulova, J. Kafka, R. Taboryski, J. N. Sørensen, I. V. Naumov
Publikováno v:
Okulov, V L, Sharifullin, B R, Okulova, N, Kafka, J, Taboryski, R, Sørensen, J N & Naumov, I V 2022, ' Influence of nano-and micro-roughness on vortex generations of mixing flows in a cavity ', Physics of Fluids, vol. 34, no. 3, 032005 . https://doi.org/10.1063/5.0083503
Experiments were carried out in a water-filled elongated cup of a “kitchen scale,” where motion was created by a rotating disk with various micro- and nano-roughness in the top of the cup. The obtained results have shown that for some patterns of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fb047953feb78dcbe901c081d513ad93
https://doi.org/10.1063/5.0083503
https://doi.org/10.1063/5.0083503
Publikováno v:
Plant Foods for Human Nutrition. 47:157-162
Crisphead lettuce (Lactuca sativa L. var capitata cvs. Marius and Saladin) were grown with a nitrogen supply from 50 to 200 kg N/hectare. Heads were stored for one or two weeks at 1 degree C in cold storage or ice bank cooling. Samples were taken for
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::652f141327f8877f704885df40fa68ea
https://doi.org/10.1007/bf01089265
https://doi.org/10.1007/bf01089265