Results 41 to 50 of about 99,399 (310)

The Influence of Hub Purge Flow Rate on Forced Response in a Low-Pressure Turbine

International Journal of Turbomachinery, Propulsion and Power
We present the results of a computational investigation into the influence of hub purge flow mass flow rate on the forcing amplitudes generated on a low-pressure turbine (LPT) rotor cascade by the upstream stator vane passing (SVP).
Alexander Trafford, Sina Stapelfeldt, Gustavo Lopes, Sergio Lavagnoli   +3 more
doaj   +1 more source

Análise de ácidos graxos não-esterificados de plasma humano por cromatografia gasosa capilar com injeção sem divisão de fluxo Analysis of non-esterified fatty acids in human plasma by capillary gas-chromatography with splitless injection

Química Nova, 2004
The aim of the present work was to test the combination of non-esterified fatty acid (NEFA) isolation using fumed silicon dioxide with capillary gas-chromatography (C-GC) with splitless injection for the analysis of NEFAs in human plasma.
Jacqueline G. Ney, Alexandre G. Torres, Nádia M. F. Trugo   +2 more
doaj   +1 more source

Pricing and Unresponsive Flows Purging for Global Rate Enhancement

Journal of Electrical and Computer Engineering, 2010
Pricing‐based Active Queue Management (AQM), such as Random Exponential Marking (REM), outperforms other probabilistic counterpart techniques, like Random Early Detection (RED), in terms of both high utilization and negligible loss and delay. However, the pricing‐based protocols do not take account of unresponsive flows that can significantly alter the
G. Abbas, A. K. Nagar, H. Tawfik, J. Y. Goulermas   +3 more
openaire   +2 more sources

Flow mechanism between purge flow and mainstream in different turbine rim seal configurations

Chinese Journal of Aeronautics, 2020
Abstract The rim seal is used to prevent mainstream ingestion to the gap between the vane of a turbine and its blade. In this article, the dolphin lip with a hook configuration and a large seal cavity with hook structures are designed based on the high-pressure turbine datum single shark lip rim seal configuration.
Ziqing ZHANG, Yingjie ZHANG, Xu DONG, Xiao QU, Xingen LU, Yanfeng ZHANG   +5 more
openaire   +1 more source

Oxide‐Free Titanium Coatings by Wire Arc Spraying in a Silane‐Doped Inert Atmosphere

Advanced Engineering Materials, EarlyView.
A silane‐doped argon atmosphere enables the production of oxide‐free titanium coatings via twin‐wire arc spraying at ambient pressure. This innovative approach eliminates residual oxygen, creating process conditions that prevent oxidation and nitride formation.
Manuel Rodriguez Diaz, Maik Szafarska, René Gustus, Kai Möhwald, Hans Jürgen Maier   +4 more
wiley   +1 more source

Investigation of Wall Effect on Packing Structures and Purge Gas Flow Characteristics in Pebble Beds for Fusion Blanket by Combining Discrete Element Method and Computational Fluid Dynamics Simulation

Applied Sciences
In a tritium-breeding blanket of a fusion reaction, helium, used as a tritium-purging gas, will purge the tritium breeder pebble beds to extract the tritium in blanket. The purge gas flow characteristics will affect the tritium extraction efficiency. The
Baoping Gong, Hao Cheng, Bing Zhou, Juemin Yan, Long Wang, Long Zhang, Yongjin Feng, Xiaoyu Wang   +7 more
doaj   +1 more source

Experimental validation of equilibria in fuel cells with dead-ended anodes [PDF]

, 2013
This paper investigates the nitrogen blanketing front during the dead-ended anode (DEA) operation of a PEM fuel cell. Surprisingly the dynamic evolution of nitrogen and water accumulation in the dead-ended anode (DEA) of a PEM fuel cell arrives to a ...
Chen, Jixin, Matsuura, Toyoaki, Siegel, Jason B., Stefanopoulou, Anna G., Yeşilyurt, Serhat   +4 more
core   +1 more source

On the Influence of Antioxidants and Recycled MgO–C Source Material on the Mechanical Properties of Carbon‐Bonded Magnesia Refractories

Advanced Engineering Materials, EarlyView.
The presented study focuses on the fracture behaviour of carbon‐bonded magnesia MgO–C refractories, where environmentally friendly fructose, collagen and lignin serve as temporary binding agents. The partial substitution of the source material with recycled MgO–C reduces the fracture resistance, which can be counteracted by the additional introduction ...
Marc Neumann, Tom Weber, Jana Hubálková, Florian Kerber, Dinesh Kumar Gunasekar, Hans Jelitto, Christos G. Aneziris   +6 more
wiley   +1 more source

Enhancing the Energy Efficiency of a Proton Exchange Membrane Fuel Cell with a Dead-Ended Anode Using a Buffer Tank

Energies
Enhancing energy efficiency is essential for proton exchange membrane fuel cells (PEMFCs) operating in a dead-ended anode (DEA) mode. This study proposes the integration of a buffer tank, positioned between the mass flow meter and the fuel cell, to ...
Trung-Huong Tran, Karthik Kannan, Amornchai Arpornwichanop, Yong-Song Chen   +3 more
doaj   +1 more source

A Novel Proposal for Optimal Performance of Blanket Gas System for FPSOs

Energies, 2022
The energy required for the transportation of raw materials and the production of most manufactured goods depends on crude oil. For these reasons, FPSOs (Floating, Production, Storage, and Offloading) have become the primary production units of crude oil
Soon-kyu Hwang, Byung-gun Jung, Jong-kap Ahn   +2 more
doaj   +1 more source