Gas Turbines Power Regulation Subject to Actuator Constraints, Disturbances and Measurement Noises

An accurate understanding of the output power functionality in gas turbines concerning the fuel, inlet valve status and other parameters can provide a general overview of the turbine's performance. In this study, the problem of practical power regulation in gas turbines is investigated in the simultaneous presence of actuator constraints,...

Corrosion-Fatigue Failure of Gas-Turbine Blades in an Oil and Gas Production Plant

This paper investigates the root cause of a failure in gas-turbine blades, made of Nimonic-105 nickel-based superalloy. The failure was reported in two blades in the second stage of a turbine-compressor of a gas turbine in the hot section. Two failed blades were broken from the root and from the airfoil. The failure took place after 20 k h of...

Boundary layer flashback prediction of a low emissions full hydrogen burner for gas turbine applications

A highly accurate model is presented that predicts boundary layer flashback (BLF) for lean premixed hydrogen combustion. In contrast to existing models, that fail for lean hydrogen mixtures, the present model includes the effect of flame instabilities. The model is applied to study the effect of burner geometry on flashback tendency. A diverging...

Development Of A Preliminary Lifing Analysis Tool For The F135-PW-100 Engine

In the near future the Royal Netherlands Air Force will replace their fleet of F-16’s with the F-35. In the past the NLR has aided the Air Force with life cycle and deterioration analysis work on the F100-PW-220 engine, which powers the F-16. Understanding the physical system of the engine allows for on-condition maintenance. The same is...

Transient modelling and analysis of the OP16 gas turbine in GSP

With the current trend towards flexible engine operation with high efficiency and low emissions, dynamic modelling of gas turbines has become critical to ensure safe and acceptable engine performance. Dynamic models are essential for design and development of control systems and for analysis of transient manoeuvres that are impractical to test....

Conceptual Design of a Flameless Combustor for Aircraft Engines

The thesis presents a feasibility study of a proposed combustion methodology by means of two-dimensional Computational Fluid Dynamics on the application of Flameless Combustion to an aircraft engine with the objective to achieve ultra-low pollutant emissions. The geometrical design started from scratch while taking the philosophy of the proposed...

Generic Analysis Methods for Gas Turbine Engine Performance: The development of the gas turbine simulation program GSP

Numerical modelling and simulation have played a critical role in the research and development towards today’s powerful and efficient gas turbine engines for both aviation and power generation. The simultaneous progress in modelling methods, numerical methods, software development tools and methods, and computer platform technology has provided...

Design of a Semi-Empirical Tool for the Evaluation of Turbine Cooling Requirements in a Preliminary Design Stage

There is an everlasting demand for higher cycle efficiencies in gas turbine engines. One way to obtain a higher efficiency is to increase the overall pressure ratio (OPR) of the engine. In order to benefit from the efficiency increase whilst maintaining the same specific gas power, the turbine inlet temperature (TIT) has to increase with it....