Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Numerical Simulation of Wind Turbine Wakes based on Actuator Line Method in NEK5000
KTH, School of Engineering Sciences (SCI), Mechanics.
2013 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

Nowadays wind turbines are clustered in wind farms and the wake development plays an important role in energy production and blade fatigue load of tubines. The actuator line method is an effective modeling approach that gives improtant wake flow characterstics of a wind turbine. In the last few years, numerous studies have been conducted based on this method using Ellipsys3D, a computational fluid dynamics (CDF) flow solver based on finitie volume approach. However, due to the limited order of accuracy of this solver, it is not capable of a linear stability analysis with small amplitude of perturbation. Therefore, the present work investigates implementing the actuator line ethos into a  high order method, Nek5000, a flow solver based on the spectral element approach. The main goal of the present work is to validate the code implementation by comparing the simulations results with the previous Ellipsys3D data. Both 2-D and 3-D Gaussian distribution functions are discussed for the actuator line force distribution. Parametric study is carried out regarding the smoothing parameter ε and the partitioning of the actuator line.

Place, publisher, year, edition, pages
2013. , 42 p.
Keyword [en]
Wind Turbine, Wake Flow, Actuator Line Method, NEK5000, Trip Vortices
National Category
Applied Mechanics
Identifiers
URN: urn:nbn:se:kth:diva-118925OAI: oai:DiVA.org:kth-118925DiVA: diva2:609092
Uppsok
Technology
Available from: 2013-03-04 Created: 2013-03-04 Last updated: 2013-03-04Bibliographically approved

Open Access in DiVA

Wenjie_examensarbete(11045 kB)1561 downloads
File information
File name FULLTEXT02.pdfFile size 11045 kBChecksum SHA-512
4c724f1af1f60650c3a1500b4336567373d31b020cf25f5b04819d24ea1af09b13fc85eac3091412c3f6a47f1ce42d0a4936940427f1f6f8c04c1bb8980ad852
Type fulltextMimetype application/pdf

By organisation
Mechanics
Applied Mechanics

Search outside of DiVA

GoogleGoogle Scholar
Total: 1561 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

urn-nbn

Altmetric score

urn-nbn
Total: 542 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf