Results 91 to 100 of about 31,919 (261)

Effect of dynamic stall on the aerodynamics of vertical-axis wind turbines [PDF]

, 2011
Accurate simulations of the aerodynamic performance of vertical-axis wind turbines pose a significant challenge for computational fluid dynamics methods.
Angell R. K., Niven A. J., Penna P. J., Scheurich F., Sheng W., Simo Ferreira C. J., Strickland J. H., Thwaites B., Toro E., Weissinger J.   +9 more
core   +1 more source

Design of HAWT Rotor for Non‐Uniform Inflow Conditions: A Theoretical and Experimental Approach for Shear Flow

Energy Science &Engineering, EarlyView.
This paper aims to provide a robust design approach for HAWTs operating in shear flow. This study fills a critical research gap by integrating BEM and vortex theories for blade design in non‐homogeneous inflow conditions. The authors of the paper made an effort to develop and test an experimentally unsophisticated model of a turbine working in shear ...
Agnieszka Dorota Woźniak, Piotr Strzelczyk, Taeseong Kim   +2 more
wiley   +1 more source

Analysis of Flutter Characteristics for Composite Laminates in Hypersonic Yawed Flow

Aerospace
This paper investigates the flutter characteristics of composite laminates in hypersonic yawed flow using numerical simulations. The governing equations are derived based on Hamilton’s principle and were discretized using the assumed mode method.
Shuang Cao, Tongqing Guo, Jiangpeng Wu, Di Zhou, Ennan Shen   +4 more
doaj   +1 more source

Experimental investigation of transonic oscillating cascade aerodynamics [PDF]

Fundamental experiments are performed in the NASA Lewis Transonic Oscillating Cascade Facility to investigate the subsonic and transonic aerodynamics of cascaded airfoils executing torsion mode oscillations at realistic values of reduced frequency.
Buffum, Daniel H., Fleeter, Sanford
core   +1 more source

A computational assessment of the aerodynamic performance of a tilted Darrieus wind turbine [PDF]

, 2015
The aerodynamic performance of a Darrieus wind turbine operating with the rotation axis tilted with respect to the free-stream wind speed is investigated in this paper. An Unsteady Reynolds Averaged Navier Stokes (URANS) Computational Fluid Dynamics (CFD)
Bedon, Gabriele, Benini, Ernesto, DE BETTA, Stefano   +2 more
core   +1 more source

Mass Exchange Flow Process in Side Channel Pumps: Effects of Different Geometrical Parameters

Energy Science &Engineering, EarlyView.
Figure 1 shows the Mass Flow Exchange (MFE) in the impeller at z = 7.5 × 10−3 m at 1.0 Q/QBEP, operating point for impeller scheme 1 (IMP 1), and impeller scheme 2 (IMP 2). The flow begins to exit the impeller at the outer radius and enters at the inner and central radii. IMP 1 exhibits more flow in and out compared to IMP 2. ABSTRACT The functionality
Desmond Appiah, Kofi Asamoah Adu‐Poku, Fan Zhang, Emmanuel Agyenim‐Boateng, Ebenezer Omari Abankwa, Majeed Koranteng Osman   +5 more
wiley   +1 more source

Delayed Detached-Eddy Simulations of Aerodynamic Variability During Carrier-Based Aircraft Landing with a Domain Precursor Inflow Method

Journal of Marine Science and Engineering
Flight tests and wind tunnel experiments face difficulties in investigating the impact of aircraft carrier air-wake on the landing process. Meanwhile, numerical methods generally exhibit low overall computational efficiency in solving such problems.
Jiawei Fu, Ruifan Hu, Hong Wang, Ke Xu, Shuling Tian   +4 more
doaj   +1 more source

Unsteady aerodynamics modeling using Volterra series expansed by basis function

MATEC Web of Conferences, 2018
Unsteady aerodynamics modeling must accurately describe nonlinear aerodynamic characteristics in addition to unsteady aerodynamic characteristics. The Volterra series has attracted increasing attention as a powerful tool for nonlinear system modeling. It
Chen Senlin, Gao Zhenghong
doaj   +1 more source

Aeroelastic modeling for the FIT (Functional Integration Technology) team F/A-18 simulation [PDF]

As part of Langley Research Center's commitment to developing multidisciplinary integration methods to improve aerospace systems, the Functional Integration Technology (FIT) team was established to perform dynamics integration research using an existing ...
Wieseman, Carol D., Zeiler, Thomas A.
core   +1 more source

A numerical investigation into the aerodynamic characteristics and aeroelastic stability of a footbridge [PDF]

, 2009
The results of a numerical investigation into the aerodynamic characteristics and aeroelastic stability of a proposed footbridge across a highway in the north of England are presented.
Taylor, I.J., Vezza, M.
core   +1 more source