Results 1 to 10 of about 149,579 (300)

THEORETICAL CALCULATION OF TORQUE COEFFICIENT OF BOLT WITH ARBITRARY END FACE

Jixie qiangdu
Bolting is a common connection method in engineering and construction, and the tightening torque is often used to control the preload of bolts on industrial sites to ensure the reliability.
WANG ChengLin, XIAO YuKun, WANG Peng, DU ZhengChun   +3 more
doaj   +1 more source

Effective Parameters Optimization of a Small Scale Gorlov Wind Turbine, Using CFD Method [PDF]

Iranian Journal of Chemistry & Chemical Engineering, 2023
In the present study, a Gorlov Vertical Axis Wind Turbine (VAWT) in small dimensions was numerically simulated using the Computational Fluid Dynamics (CFD) method.
Mohammad Akhlagi, Farzad Ghafoorian, Mehdi Mehrpooya, Mohsen Sharifi Rizi   +3 more
doaj   +1 more source

Small Horizontal Wind Turbine Design and Aerodynamic Analysis Using Q-Blade Software

مجلة بغداد للعلوم, 2023
Wind energy is one of the most common and natural resources that play a huge role in energy sector, and due to the increasing demand to improve the efficiency of wind turbines and the development of the energy field, improvements have been made to ...
Othman K. Zidane, Yaseen H. Mahmood
doaj   +1 more source

A Numerical Study on Surface-piercing Propellers using Sliding Mesh Method via Openfoam Software [PDF]

Iranica Journal of Energy and Environment, 2023
Surface-piercing propellers (SPP) are known as one of the most efficient propellers in marine sciences and maritime industries. In this study, different types of simulations were performed on an SPP in various rotational speeds in open water conditions ...
A. Amini, N. M. Nouri, S. Niazi, A. Abedi   +3 more
doaj   +1 more source

Torque Performance Improvement of Doubly Salient Electromagnetic Machine by Harmonic Current Injection With Optimized Magnetomotive Force Ratio

IEEE Access, 2021
The doubly salient electromagnetic machine (DSEM) has simple and reliable structure while suffering from the problem of torque ripple due to the salient pole structure.
Yongmei Wu, Shijia Yu, Xiangpei Gu, Chuang Liu   +3 more
doaj   +1 more source

Numerical simulation analysis of flow characteristics in the cavity of the rotor-stator system

Engineering Applications of Computational Fluid Mechanics, 2022
Investigating the flow characteristics in the cavity by changing the rotor profile of the rotor-stator system is of considerable significance, this paper simplifies clearance flow to rotor-stator cavity flow. The numerical simulation results are compared
Jianwei Shi, Zhizhou Zhao, Wenwu Song, Yongxin Jin, Jiaxing Lu   +4 more
doaj   +1 more source

Comparison of Power Coefficients in Wind Turbines Considering the Tip Speed Ratio and Blade Pitch Angle

Energies, 2023
This paper presents a review of the power and torque coefficients of various wind generation systems, which involve the real characteristics of the wind turbine as a function of the generated power.
Oscar Carranza Castillo, Viviana Reyes Andrade, Jaime José Rodríguez Rivas, Rubén Ortega González   +3 more
doaj   +1 more source

Experimental study on improving the performance of the Savonius wind turbine with ailerons (Improvement of wind turbine effective in low tip speed ratio)

Nihon Kikai Gakkai ronbunshu, 2022
For the purpose of improving the performance of the Savonius wind turbine, we added ailerons to the turbine to rotate with the turbine buckets. Ailerons with a relatively simple structure were installed within the rotating area of the Savonius wind ...
Wataru SUGIYAMA, Takayoshi SASAKI, Orie TAMURA   +2 more
doaj   +1 more source

Design and CFD simulation of guide vane for multistage Savonius wind turbine

Journal of Mechatronics, Electrical Power, and Vehicular Technology, 2023
This study proposes improving the performance of a fixed-axis multistage Savonius wind turbine by integrating a sixbladed guide vane. Guide vanes aim to direct the incoming wind towards the blades of the Savonius wind turbine so that it can increase the ...
Dionisius Devin, Levin Halim, Bagus Made Arthaya, Jonathan Chandra   +3 more
doaj   +1 more source

Computational fluid dynamics on a newly developed Savonius rotor by adding sub-buckets for increase of the tip speed ratio to generate higher output power coefficient

Journal of Fluid Science and Technology, 2020
The output power coefficient of the Savonius rotor needs to be improved in attaining better practical applications. Up until now, to improve the output power coefficient, the newly developed Savonius rotor with semi-elliptical sub-buckets has been ...
Takanori MATSUI, Tomohiro FUKUI, Koji MORINISHI   +2 more
doaj   +1 more source