Results 51 to 60 of about 599 (185)

Design Optimization of a Transonic-Fan Rotor Using Numerical Computations of the Full Compressible Navier-Stokes Equations and Simplex Algorithm

International Journal of Rotating Machinery, 2014
The design of a transonic-fan rotor is optimized using numerical computations of the full three-dimensional Navier-Stokes equations. The CFDRC-ACE multiphysics module, which is a pressure-based solver, is used for the numerical simulation.
M. A. Aziz, Farouk M. Owis, M. M. Abdelrahman   +2 more
doaj   +1 more source

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

Energy Science &Engineering, Volume 14, Issue 4, Page 1935-1951, April 2026.
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

INCREASING EFFICIENCY OF REPAIRING, MANUFACTURING AND OPERATION OF THE TPP FACILITIES BY TECHNOLOGY OF GAS-THERMAL COATING AND LASER SURFACE MELTING

Известия высших учебных заведений и энергетических объединенний СНГ: Энергетика, 2015
The article considers effectiveness increase of the TPP heat-mechanical equipment repair, manufacturing and maintenance as exemplified by gas-thermal technique for hardening laststages rotor blades of the steam turbines.
O. E. Grachev, V. M. Neuimin, D. V. Nasteka   +2 more
doaj  

Integral Airfoil Generation of Multi-rotor Aircraft Based on Optimization of Upper Wing Contour and CFD Simulation [PDF]

Journal of Applied Fluid Mechanics
Regarding the airfoil optimization design of multi-rotor unmanned aerial vehicles, this paper proposes an integral airfoil design method based on upper airfoil contour optimization. Firstly, by designing concave descent input curves with 0-1 distribution,
Z. Wang, Y. Zhu, Q. Yuan, W. B. Gu, X. B. Xie   +4 more
doaj   +1 more source

Development of a semi-analytical model to select a suitable airfoil section for blades of horizontal axis hydrokinetic turbine

Energy Reports, 2020
All modern hydro-kinetic turbines are being designed based on a lift, using airfoils, which should have a significant lift to drag ratio to achieve maximum efficiency.SG604X family airfoil has significant lift-to-drag ratio under an operating range of Re
Mahendra Kumar Gupta, P.M.V. Subbarao
doaj   +1 more source

Numerical Investigation of Transonic Axial Compressor Rotor With Leading‐Edge Tubercles

Engineering Reports, Volume 8, Issue 3, March 2026.
Amplitude, wavelength, and span‐wise location of the leading‐edge tubercles on a transonic NASA Rotor 37 compressor are numerically optimized. An increase in efficiency by 0.52% compared to the corresponding baseline rotor is observed. The location of the shockwave moves downstream of the rotor with 1.91% higher pressure.
Muhammad Hamza, Tariq Talha, Shahid Aziz, Syed Osama Safdar Bukhari, Abdur Rehman Mazhar, Rehan Khan, Dong‐Won Jung   +6 more
wiley   +1 more source

Number of Blades’ Influence on the Performance of Rotor with Equal Solidity in Open and Shrouded Configurations: Experimental Analysis

Aerospace
This study explores the implications of the number of blades on the performance of both open and shrouded rotors. By conducting a thorough experimental analysis at a fixed solidity ratio, this research seeks to enhance our understanding of rotor dynamics
Abdallah Dayhoum, Alejandro Ramirez-Serrano, Robert J. Martinuzzi   +2 more
doaj   +1 more source

Segmented Gurney Flaps for Improved Wind Turbine Wake Recovery

Wind Energy, Volume 29, Issue 3, March 2026.
ABSTRACT When wind passes through the rotor of a wind turbine, the velocity is decreased while turbulence is increased. The region of decreased wind speed behind the rotor is known as the wind turbine wake and is bounded by a complex structure of helical vortices. This structure occurs to be more stable in low ambient turbulence and low tip speed ratio
Nirav Dangi, Koen Boorsma, Edwin Bot, Wim Bierbooms, Wei Yu   +4 more
wiley   +1 more source

Development of a Novel Modified Mean‐Line Approach for Performance Prediction of Axial Compressors

Energy Science &Engineering, Volume 14, Issue 2, Page 843-853, February 2026.
ABSTRACT There is significant importance in accurate prediction of axial flow compressor characteristics at different conditions. Different techniques and models have been proposed for performance prediction of axial compressors. Because of its lower computational cost and high speed the meanline algorithm has been widely applied in preliminary design ...
Sina Hassanlue, Mohammad Alhuyi Nazari, Mohammadreza Pakatchian   +2 more
wiley   +1 more source

Aerodynamically Efficient Rotor Design for Hovering Agricultural Unmanned Helicopter

Journal of Applied Fluid Mechanics, 2017
Unmanned aerial vehicles, especially agricultural unmanned helicopters (AUH), are nowadays extensively used in precision agriculture. AUHs have recently become responsible for spraying fertilizers and pesticides for crop yields.
B. A. Haider, C. H. Sohn, Y. S. Won, Y. M. Koo   +3 more
doaj