Concept

Turbine à gaz

Publications associées (379)

Angled microfiber arrays as low-modulus, low Poisson's ratio compliant substrates

This paper presents a novel fabrication method for producing high-aspect-ratio, angled polymer microfiber arrays by directional pulling of polyethylene from low-aspect-ratio, microporous polycarbonate templates. These arrays represent a novel substrate for ...

Iop Publishing Ltd2014

Hole Staggering Effect on the Cooling Performance of Narrow Impingement Channels Using the Transient Liquid Crystal Technique

Peter Ott, Alexandros Terzis, Bernhard Weigand, Guillaume Wagner

This study examines experimentally the cooling performance of narrow impingement channels as could be cast-in in modern turbine airfoils. Full surface heat transfer coefficients are evaluated for the target plate and the sidewalls of the channels using the ...

American Society of Mechanical Engineers2014

Thermo-economic optimization of a Solid Oxide Fuel Cell - Gas Turbine system fuelled with gasified lignocellulosic biomass

François Maréchal, Adriano Viana Ensinas, Laurence Tock, Priscilla Caliandro

Within the context of sustainable energy supply and CO2 emissions reduction a Solid Oxide Fuel Cell (SOFC) - Gas Turbine hybrid system, fuelled with gasified woody biomass for medium scale applications (8MWth,BM of dry biomass) is studied in detail. The sy ...

2013

Chapter 14 - Restoration Processes after Blackouts

Mario Paolone, Carlo Alberto Nucci

This chapter aims at illustrating the power system dynamic behavior during restoration scenarios in transmission networks, with particular reference to the analysis of thermal power plant black-start capabilities. This chapter is structured into three part ...

John Wiley & Sons2013

Numerical and Experimental Investigation of the Aerodynamic Excitation of a Model Low-Pressure Steam Turbine Stage Operating Under Low Volume Flow

Peter Ott, Benjamin Megerle, Ivan William McBean

The diversification of power generation methods within existing power networks has increased the requirement for operational flexibility of plants employing steam turbines. This has led to the situation where steam turbines may operate at very low volume f ...

Asme2013

Unsteady Aerodynamics of Low-Pressure Steam Turbines Operating Under Low Volume Flow

Peter Ott, Benjamin Megerle, Ivan William McBean

Non-synchronous excitation under low volume operation is a major risk to the mechanical integrity of last stage moving blades (LSMBs) in low-pressure (LP) steam turbines. These vibrations are often induced by a rotating aerodynamic instability similar to r ...

2013

Unsteady Aerodynamics of Low-Pressure Steam Turbines Operating Under Low Volume Flow

Peter Ott, Benjamin Megerle, Ivan William McBean

2013

Large-Eddy Simulation of Turbulent Boundary Layer Flow through Wind Turbines and Wind Farms

Yu-Ting Wu

In this thesis, we develop a new large-eddy simulation (LES) framework to simulate atmospheric boundary layer (ABL) flows through wind turbines and wind farms. A Lagrangian scale-dependent dynamic model is used to compute the Smagorinsky model coefficient ...

EPFL2013

Impact of Operating Regime on Aviation Engine Emissions: Modeling Study

Pénélope Leyland

This work is focused on the numerical analysis of pollutant formation in an aviation gas turbine engine at different values of power setting. The analysis is conducted on the basis of a comprehensive approach treating the reactor net model for description ...

Amer Inst Aeronautics Astronautics2013

Design of the heat exchanger network for the SOFC-GT concept

Karel De Raeve

Within the challenge of sustainability, climate change mitigation and energy supply a promising way of more rational energy conversion is decentralized power generation and the co-production of power and heat. The combination of a solid oxide fuel cell (SO ...

2013

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