High Temperature Alloys for the Gas Turbine - The State of the Art

1965 ◽  
Author(s):  
W. H. Sharp
Keyword(s):  
High Temperature ◽  
Gas Turbine ◽  
State Of The Art ◽  
The State ◽  
High Temperature Alloys

Gas Turbine Using In Situ Combustion

2016 ◽  
Vol 859 ◽  
pp. 20-28
Author(s):  
Cleopatra Florentina Cuciumita ◽  
Ionuţ Porumbel ◽  
Sterian Dănăilă
Keyword(s):  
Literature Review ◽  
Gas Turbine ◽  
State Of The Art ◽  
The State ◽  
Extensive Literature ◽  
Research Project ◽  
Extensive Literature Review ◽  
Gas Turbine Combustion ◽  
New Research

The paper presents the background and objectives of a new research project carried out in the field of in situ gas turbine combustion. An extensive literature review highlighting the state-of-the-art in the field is presented. Several possible solutions for the turbine burner are also included. The objectives and the expected original contributions of the projects conclude the paper.

High temperature proton exchange membrane fuel cells: progress in advanced materials and key technologies

2021 ◽  
Author(s):  
Rizwan Haider ◽  
Yichan Wen ◽  
Zi-Feng Ma ◽  
David P. Wilkinson ◽  
Lei Zhang ◽  
...  
Keyword(s):  
Fuel Cells ◽  
High Temperature ◽  
Proton Exchange Membrane ◽  
State Of The Art ◽  
The State ◽  
Proton Exchange ◽  
Advanced Materials ◽  
Comprehensive Review ◽  
Key Technologies ◽  
Exchange Membrane

This comprehensive review gives a picture about the state-of-the-art progress of HT-PEMFCs, and the challenges, strategies and rules to design, evaluate and promote the performance of HT-PEMFCs.

Smart Combustors: Just Around the Corner

2005 ◽  
Author(s):  
Ben T. Zinn
Keyword(s):  
Control System ◽  
Control Systems ◽  
Gas Turbine ◽  
Active Control ◽  
Health Monitoring ◽  
State Of The Art ◽  
The State ◽  
Research Needs ◽  
Combustion Instabilities ◽  
Lean Blowout

This paper reviews the state of the art of active control systems (ACS) for gas turbine combustors. Specifically, it discusses the manner in which ACS can improve the performance of combustors, the architecture of such ACS, and the designs and promising performance of ACS that have been developed to control combustion instabilities, lean blowout and pattern factor. The paper closes with a discussion of research needs, with emphasis on the integration of utilized engine ACS, health monitoring and prognostication systems into a single control system that could survive in the harsh combustor environment.

scholarly journals Quasicrystals: What do we know? What do we want to know? What can we know?

2018 ◽  
Vol 74 (1) ◽  
pp. 1-11 ◽  
Author(s):  
Walter Steurer
Keyword(s):  
High Temperature ◽  
Physical Properties ◽  
Structure Analysis ◽  
Self Assembly ◽  
State Of The Art ◽  
The State ◽  
Growth Mechanisms ◽  
Dan Shechtman ◽  
Big Picture ◽  
Quasicrystal Structure

More than 35 years and 11 000 publications after the discovery of quasicrystals by Dan Shechtman, quite a bit is known about their occurrence, formation, stability, structures and physical properties. It has also been discovered that quasiperiodic self-assembly is not restricted to intermetallics, but can take place in systems on the meso- and macroscales. However, there are some blank areas, even in the centre of the big picture. For instance, it has still not been fully clarified whether quasicrystals are just entropy-stabilized high-temperature phases or whether they can be thermodynamically stable at 0 K as well. More studies are needed for developing a generally accepted model of quasicrystal growth. The state of the art of quasicrystal research is briefly reviewed and the main as-yet unanswered questions are addressed, as well as the experimental limitations to finding answers to them. The focus of this discussion is on quasicrystal structure analysis as well as on quasicrystal stability and growth mechanisms.

SPIN DYNAMICS OF TWO-DIMENSIONAL HUBBARD SYSTEMS

1990 ◽  
Vol 04 (21) ◽  
pp. 1325-1340 ◽  
Author(s):  
DAVID KO
Keyword(s):  
High Temperature ◽  
Strong Coupling ◽  
High Temperature Superconductivity ◽  
State Of The Art ◽  
Spin Dynamics ◽  
The State ◽  
Strong Coupling Limit ◽  
Two Dimensional ◽  
Two Dimension ◽  
Basic Ideas

The discovery of high temperature superconductivity has motivated a vigorous study of the physics of Hubbard systems. Here, the properties of the spin aspects of the Hubbard system in two-dimension, in the strong coupling limit, are briefly reviewed, with the basic ideas, some of the fundamental questions and the state of the art introduced.

Working Group Activities of AGARD Propulsion and Energetics Panel

1993 ◽  
Author(s):  
Ahmet S. Ucer
Keyword(s):  
Gas Turbine ◽  
Working Group ◽  
State Of The Art ◽  
The State ◽  
Turbine Engines ◽  
Gas Turbine Engines ◽  
Specific Topic ◽  
Experimental Knowledge ◽  
Group Activities ◽  
Working Groups

One of the major activities of AGARD Panels is to form working groups which assemble experts who work on the particular subject for two or three years. As a result of the work an Advisory Report is published which compiles the state of the art knowledge on the chosen specific topic. This paper explains the philosophy and procedures adopted during the formation of working groups of the Propulsion and Energetics Panel. Working groups concerning gas turbine technologies are presented. The selected working groups aim to improve the computational and experimental knowledge which would lead to the design of advanced aero gas turbine engines. Objective, scope, procedure, and important results of each Working Group will be explained. Working groups which were active during 1980’s and which are presently active are covered.

De-alloying and fatigue of high temperature alloys used for gas turbine blades

1995 ◽  
Vol 13 (2) ◽  
pp. 81-86 ◽  
Author(s):  
L. B. Getsov ◽  
A. I. Rybnikov ◽  
P. G. Krukovski ◽  
E. C. Kartavova
Keyword(s):  
High Temperature ◽  
Gas Turbine ◽  
Turbine Blades ◽  
Gas Turbine Blades ◽  
High Temperature Alloys
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