Results 91 to 100 of about 5,210,544 (313)

On Unsteady Flow of a Dissociating Gas

Defence Science Journal, 1981
Lighthill's model of an ideal dissociating gas has been exploited to study three dimensional unsteady flows in the absence of dissipative mechanisms. Expressions for the tangent, principal normal and binormal vectors, curvature and torsion of streamlines, variations of pressure along streamlines and their principal normal and binormal have been ...
openaire   +2 more sources

The damage and failure mechanism of prestatically loaded rock during medium‐strain rate cyclic impact loading

Deep Underground Science and Engineering, EarlyView.
Based on experimental results and theoretical analysis, an established rock damage accumulation model that comprehensively considers the preapplied static load, impact peak value, impact frequency, and impact times. Abstract To study the rock damage mechanism under high static loading and superimposed medium strain rate cyclic impact loading, a series ...
Wei Wang, Hanpeng Wang, Zicheng Wang, Xinyuan Xie, Yunhao Wu, Jinhou Zhang, Dekang Sun   +6 more
wiley   +1 more source

Dual solutions of unsteady flow of copper-alumina/water based hybrid nanofluid with acute magnetic force and slip condition. [PDF]

Heliyon, 2023
Rasool G, Xinhua W, Lund LA, Yashkun U, Wakif A, Asghar A.   +5 more
europepmc   +1 more source

Performance assessment of a potential underground thermal storage facility: Case study of the closed mine Prosper‐Haniel in the Ruhr coal mining area in Germany

Deep Underground Science and Engineering, EarlyView.
This study demonstrates the feasibility of an underground closed‐loop thermal storage facility at a post‐mining site, intended for seasonal heat energy storage. Its principal design shows water flow directions in winter and summer (1, 2), heat pumps (3), an upper water reservoir (4), and connecting pipes (5).
Dmytro Rudakov, Oleksandr Inkin
wiley   +1 more source

Effects of Camber of S‐Series Airfoils on Aerodynamic Performance, Entropy Generation Rate, Irreversibility, and Second Law Efficiency of Horizontal Axis Wind Turbines

Energy Science &Engineering, EarlyView.
Due to the depletion of fossil fuels, enhancing wind turbine efficiency is crucial. Utilizing airfoils with high lift‐to‐drag ratios significantly improves power generation by optimizing aerodynamic parameters. Furthermore, entropy generation analysis serves as an effective method for design optimization by minimizing energy losses and exergy ...
Mitra Yadegari
wiley   +1 more source

Magnetic dipole effects on unsteady flow of Casson-Williamson nanofluid propelled by stretching slippery curved melting sheet with buoyancy force. [PDF]

Sci Rep, 2023
Kumar P, Nagaraja B, Almeida F, AjayKumar AR, Al-Mdallal Q, Jarad F.   +5 more
europepmc   +1 more source

Blade loading on tidal turbines for uniform unsteady flow

, 2015
An improved characterisation of the unsteady hydrodynamic loads on tidal turbine blades is necessary to enable more reliable predictions of their fatigue life and to avoid premature failures.
I. Milne, A. Day, Rajnish N. Sharma, R. Flay   +3 more
semanticscholar   +1 more source

A Numerical Investigation of the Effects of Piston Bowl Geometry and Spray Angle on Combustion, Performance and Emission of a Diesel Engine

Energy Science &Engineering, EarlyView.
A piston bowl's design and spray angle improve air‐fuel mixing, resulting in more complete combustion and higher efficiency. Ansys Forte 2023 R1 a CFD software was used to analyze the effects of five combustion chamber geometries of cylinder, modified re‐entrant, re‐entrant, double‐stepped, and stepped on engine performance, combustion, and emission ...
Md. Nazmul Haque, Abdullah Al Rifat, Tafsirul Hassan, Md. Ifthaker Alam, Mohammad Mehedi Hasan Kazol, Md. Ashraful Islam, Abidur Rahman Adib, Mizanur Rahman   +7 more
wiley   +1 more source

Study on Water Entry of a 3D Torpedo Based on the Improved Smoothed Particle Hydrodynamics Method

Applied Sciences
The water entry of a torpedo is a complex nonlinear problem, involving transient impact, free surface deformation, droplet splashing, and fluid–structure coupling, which poses severe challenges to traditional mesh methods.
Xiaowei Cai, Wei Wu, Wenji Han, Wenjie Li, Jun Zhang, Yanmei Jiao   +5 more
doaj   +1 more source

Advances in Unsteady Boundary Layer Transition Research, Part I: Theory and Modeling

International Journal of Rotating Machinery, 2003
This two-part article presents recent advances in boundary layer research that deal with the unsteady boundary layer transition modeling and its validation.
M. T. Schobeiri, L. Wright
doaj   +1 more source