Results 21 to 30 of about 80,785 (315)

Convective and Film Cooled Nozzle Extension for a High Pressure Rocket Subscale Combustion Chamber [PDF]

open access: yes, 2010
Experimental investigations have been carried out to study heat transfer, flow separation, and side loads in a subscale nozzle extension. A Vulcain 2-like nozzle geometry has been tested with combustion chamber pressures up to 13 MPa. A new manufacturing
Richard Arnold   +5 more
core   +1 more source

Comparison of Shell and Solid Finite Element Models for the Static Certification Tests of a 43 m Wind Turbine Blade

open access: yesEnergies, 2018
A commercial 43 m wind turbine blade was tested under static loads. During these tests, loads, displacements, and local strains were recorded. In this work, the blade was modeled using the finite element method.
Mathijs Peeters   +3 more
doaj   +1 more source

Quantitative analysis of heat transfer characteristics and advantages in opposed-piston 2-stroke diesel engines

open access: yesCase Studies in Thermal Engineering, 2023
Opposed-piston 2-stroke diesel engines (OP2S) have lower combustion chamber surface-area-to-volume ratio, resulting in lower transfer loss but also excessive surface temperature.
Sufei Wang, Fujun Zhang
doaj   +1 more source

Combustion Heated Thermionic Systems

open access: yesSAE Technical Paper Series, 1992
<div class="htmlview paragraph">Thermionic cogeneration is developing as a new energy conservation option. The characteristics of thermionic systems using combustion of natural gas as heat source are studied. The - until now unused - high temperature potential of fuels can be applied in order to extract work using the high temperature thermionic ...
Veltkamp, W.B.   +2 more
openaire   +2 more sources

The Concept of Segmented Wind Turbine Blades: A Review

open access: yesEnergies, 2017
There is a trend to increase the length of wind turbine blades in an effort to reduce the cost of energy (COE). This causes manufacturing and transportation issues, which have given rise to the concept of segmented wind turbine blades.
Mathijs Peeters   +3 more
doaj   +1 more source

Theoretical limits of scaling-down internal combustion engines [PDF]

open access: yes, 2010
Small-scale energy conversion devices are being developed for a variety of applications; these include propulsion units for micro aerial vehicles (MAV). The high specific energy of hydrocarbon and hydrogen fuels, as compared to other energy storing means,
Sher, E., Sher, Ilai, I. Sher, E. Sher
core   +1 more source

Performance and analysis of a 4-stroke multi-cylinder gasoline engine with CAI combustion [PDF]

open access: yes, 2002
Copyright © 2002 SAE International. This paper is posted on this site with permission from SAE International. Further use of this paper is not permitted without permission from SAEControlled Auto-Ignition (CAI) combustion was realised in a production ...
Nicos Ladommatos   +7 more
core   +1 more source

Gas-wall heat flux analysis on PCI combustion by using the one-dimensional model (Effect of change in heat loss under transient operation)

open access: yesNihon Kikai Gakkai ronbunshu, 2021
Premixed Compression Ignition (PCI) engine has a potential to improve transient performance as well as exhaust emissions. In this paper, a one-dimensional engine model combined with a heat transfer model is used to analyze heat flux between in-cylinder ...
Kyohei YAMAGUCHI   +4 more
doaj   +1 more source

Hybrid RANS/LES computation of plane impinging jet flow

open access: yesArchives of Mechanics, 2011
Flow characteristics are presented of simulation results of plane impinging jets at high nozzle-plate distances, with two k-ω based hybrid RANS/LES (Reynolds Averaged Navier–Stokes/Large–Eddy Simulation) models and a k-ω RANS model. The first hybrid RANS/
S. Kubacki, J. Rokicki, E. Dick
doaj   +1 more source

8-stroke low heat rejection engine

open access: yesEnergy Reports, 2022
In a combustion engine, 25% of the energy present in the fuel is wasted as heat; this heat is dissipated to avoid overheating and prevent damages. This article presented a simulation work developed to study an internal combustion engine with a low heat ...
D. Silva Cardoso, P. Oliveira Fael
doaj   +1 more source

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