Show/Hide Menu
Hide/Show Apps
Logout
Türkçe
Türkçe
Search
Search
Login
Login
OpenMETU
OpenMETU
About
About
Open Science Policy
Open Science Policy
Communities & Collections
Communities & Collections
Help
Help
Frequently Asked Questions
Frequently Asked Questions
Guides
Guides
Thesis submission
Thesis submission
MS without thesis term project submission
MS without thesis term project submission
Publication submission with DOI
Publication submission with DOI
Publication submission
Publication submission
Supporting Information
Supporting Information
General Information
General Information
Copyright, Embargo and License
Copyright, Embargo and License
Contact us
Contact us
2D and 3D CFD investigation of NREL S826 airfoil at low reynolds numbers
Date
2014-06-20
Author
Türkal, Mert
Novikov, Yaroslav
Üşenmez, Serdar
Sezer Uzol, Nilay
Uzol, Oğuz
Metadata
Show full item record
Item Usage Stats
127
views
0
downloads
Cite This
In this study CFD investigation of flow over the NREL S826 airfoil is performed. NREL S826 airfoil was designed for HAWTs of 10-15 meter diameters. However, it is used in the NTNU wind turbine rotor model and low Reynolds number flow characteristics become important in the validations with the test cases of this rotor model. The airfoil CFD simulations are carried out in 2-D and 3-D computational domains. The k-rn SST turbulence model with Langtry-Menter (γ-Reθ) transition prediction model for turbulence closure is used in the calculations. The Delayed DES is also performed in the stall region for comparisons. The results are compared with the available METUWIND experimental data, and are shown to be in fair agreement. It is observed that 3-D CFD analysis provides increased accuracy at increased computational cost.
URI
http://iopscience.iop.org/article/10.1088/1742-6596/524/1/012028/meta
https://hdl.handle.net/11511/88333
DOI
https://doi.org/10.1088/1742-6596/524/1/012028
Conference Name
The Science of Making Torque From Wind, TORQUE 20014, (18 - 20 Haziran 2014)
Collections
Department of Aerospace Engineering, Conference / Seminar
Suggestions
OpenMETU
Core
Synthetic jet application on a flapping airfoil
Çiftci, Meltem; Kurtuluş, Dilek Funda; Department of Aerospace Engineering (2014)
In this study, an active flow control method is studied numerically by the application of synthetic jet over SD7003 airfoil. Steady and unsteady flows over the airfoil are computed by using a Navier-Stokes solver. k-ω SST turbulence model is employed for the investigation of the jet parameters at various angles of attacks and Reynolds numbers. The effect of the jet velocity and the jet angle are investigated to increase the lift to drag ratio. The jet slot size and the jet location are kept constant during ...
Mathematical modeling of horizontal two-phase flow through fully eccentric annuli
Ömürlü, Çiğdem; Özbayoğlu, Evren; Department of Petroleum and Natural Gas Engineering (2006)
The primary objective of this study is to understand the mechanism, the hydraulics and the characteristics, of the two-phase flow in horizontal annuli. While achieving this goal, both theoretical and experimental works have been conducted extensively. The METU-PETE-CTMFL (Middle East Technical University, Petroleum and Natural Gas Engineering Department, Cuttings Transport and Multiphase Flow Laboratory) multiphase flow loop consists of 4.84 m long eccentric horizontal acrylic pipes having 0.1143m inner dia...
Numerical simulation of fluid flow and heat transfer in a trapezoidal microchannel with COMSOL multiphysics: A case study
Turgay, Metin Bilgehan; Güvenç Yazıcıoğlu, Almıla (2018-01-01)
In this study, fluid flow and heat transfer in a trapezoidal microchannel are numerically investigated. For this purpose, a reference study with experimental and numerical solutions is adopted from the literature and solved with COMSOL multiphysics. Good agreement with the results of the reference work is obtained. In addition, effects of stabilization methods and element discretization options that are offered by the program on the results are investigated and discussed with examples. In addition, two diff...
Analytical modeling of asymmetric multi-segment rotor - bearing systems with Timoshenko beam model including gyroscopic moments
Özşahin, Orkun; Özgüven, Hasan Nevzat (2014-11-01)
In this study, analytical modeling and an analysis approach for asymmetric multi-segment rotor bearing systems are presented. Timoshenko beam model which includes the effect of gyroscopic moments is employed for modeling rotor segments. Instead of applying FEM, sub-segment Frequency Response Functions (FRFs) are obtained analytically, and sub-segment FRFs obtained are coupled by using receptance coupling method. Bearing properties are included into system dynamics by employing structural modification techni...
Experimental investigation of axial load on low cycle fatigue performance of steel H-piles in integral bridges
Dicleli, Murat (null; 2017-08-28)
In this study, the effect of axial load on the low cycle fatigue performance of integral bridge steel H–piles is investigated. Review of literature revealed that there is no experimental research data on the effect of axial load on the low cycle fatigue performance of integral bridge steel H-piles. For this purpose, experimental studies on full scale steel H-pile specimens are conducted to simulate cyclic behavior of steel Hpiles under thermal effects in integral bridges by considering the effect of axial l...
Citation Formats
IEEE
ACM
APA
CHICAGO
MLA
BibTeX
M. Türkal, Y. Novikov, S. Üşenmez, N. Sezer Uzol, and O. Uzol, “2D and 3D CFD investigation of NREL S826 airfoil at low reynolds numbers,” presented at the The Science of Making Torque From Wind, TORQUE 20014, (18 - 20 Haziran 2014), Copenhagen, Danimarka, 2014, Accessed: 00, 2021. [Online]. Available: http://iopscience.iop.org/article/10.1088/1742-6596/524/1/012028/meta.
