Results 21 to 30 of about 193,928 (304)

Plastic and creep deformations of thick-walled cylinder with a rigid casing under internal pressure [PDF]

Vestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2021
The creep and plastic flow of cylindrical pressurized vessel with rigid casing was considered. To combine creep and plastic deformations the vessel was heated and subjected to the high inner pressure. The semi-analytical solution for plain strain problem
Sergey Viktorovich Firsov
doaj   +1 more source

Stress prediction of marine diesel engine crankshaft based on digital twin technology

Zhongguo Jianchuan Yanjiu, 2023
ObjectivesA crankshaft is a key component of marine diesel engines. In order to monitor crankshaft stress and ensure the safe and reliable operation of ships, a crankshaft stress monitoring method based on digital twin technology is proposed.MethodsBased
Yonghua YU, Meiqiang XIE, Baoyue LI, Ning ZHANG, Xin SONG   +4 more
doaj   +1 more source

Simulation of The Effects of Valve Timing Misalignment on Performance in Spark Ignition Engines [PDF]

Engineering Perspective
Engine performance can be improved by changing the valve opening (or closing) timing without any cam profile changes. In this study, a simple simulation model was created for valve timing misalignment, which is an assembly defect in the engine.
Emre Arabacı, Şule Öztürk, Serdar Halis   +2 more
doaj   +1 more source

Experimental Investigation on the High-frequency Pressure Oscillation Characteristics of a Combustion Process in a DI Diesel Engine

Energies, 2020
It is difficult to decompose the in-cylinder pressure of combustion of the direct injection (DI) diesel engine, a transient process associated with complicated oscillation components, because of its steep property. An adaptive cyclic average method based
Xu Zheng, Nan Zhou, Quan Zhou, Yi Qiu, Ruijun Liu, Zhiyong Hao   +5 more
doaj   +1 more source

Experimental Investigation of Combustion Characteristics on Opposed Piston Two-Stroke Gasoline Direct Injection Engine

Energies, 2021
The combustion characteristics of an opposed-piston two-stroke gasoline engine are investigated with experiment. The energy conversion and exergy destruction are analyzed and the organization method of the combustion process is summarized. The effects of
Fukang Ma, Wei Yang, Junfeng Xu, Yufeng Li, Zhenfeng Zhao, Zhenyu Zhang, Yifang Wang   +6 more
doaj   +1 more source

Lift forces in granular media [PDF]

, 2014
Published version: http://scitation.aip.org/content/aip/journal/pof2/26/4/10.1063/1.4869859International audienceThe paper presents an experimental and numerical study of the forces experienced by a cylinder moving horizontally in a granular medium under
Forterre, Yoël, Guillard, François, Pouliquen, Olivier   +2 more
core   +4 more sources

Research on Selection of Heating Extraction Point for H Class Gas-Steam Combined Cycle Unit in Zengcheng, Guangzhou

南方能源建设, 2021
[Introduction] To find out the best extraction heating scheme according to the medium pressure heating steam parameters of large capacity combined cycle unit. [Method] Combined with the heat load characteristics of Zengcheng project, this paper discussed
FAN Yonggang, WANG Zhong, ZHU Jin, FU Huanxing, CHEN Changshan   +4 more
doaj   +1 more source

Wall effects on the transportation of a cylindrical particle in power-law fluids [PDF]

, 2011
The present work deals with the numerical calculation of the Stokes-type drag undergone by a cylindrical particle perpendicularly to its axis in a power-law fluid.
A. Ambari, A. Ben Richou, A. Despeyroux, Batchelor, Champmartin, Douglas, Ferreira, Frankel, Happel, Lamb, Lyon, Marus˘ić-Paloka, Oseen, Peaceman, Peyret, Quartappelle, Richou, Scirocco, semin, Sepehr, Sivakumar, Stokes, Tanner, Tomita, Tucker, Wasserman, Whitney   +26 more
core   +5 more sources

Experimental investigations on the failure modes of ring-stiffened cylinders under external hydrostatic pressure

International Journal of Naval Architecture and Ocean Engineering, 2018
This paper reports on the experimental investigations on the failure modes of ring-stiffened cylinder models subjected to external hydrostatic pressure. Nine models were welded from general structural steel.
Sang-Rai Cho, Teguh Muttaqie, Quang Thang Do, Sinho Kim, Seung Min Kim, Doo-Hwan Han   +5 more
doaj   +1 more source

Effect of diesel injection pressure for enhancing combustion and reducing mechanical vibration and noise emissions in a non-road diesel engine

European Mechanical Science, 2023
In this study, the combustion, performance, emissions, noise, and vibration characteristics of a single-cylinder, four-stroke, air-cooled diesel engine used for non-road purposes were investigated by controlling different injection pressures with a ...
Nurullah Gültekin, Halil Erdi Gülcan, Murat Ciniviz   +2 more
doaj   +1 more source