... investigations of the flow, heat transfer, and pressure loss in various Gyroid architectures in a wedge-shaped channel, representing a trailing edge cooling for gas turbine blades. The Gyroid structures are partly arranged near the outlet of the wedged channel or are fully filled within the wedged channel...

...Francesco Radaelli; Christian Amann; Ali Aydin; Igor Varfolomeev; Peter Gumbsch; Kai Kadau We present a probabilistic model for quantifying the number of load cycles for nucleation of forging flaws—for a 3.5NiCrMoV high strength low alloy rotor steel—into a crack under gas turbine operating...

...Jinwei Chen; Xinyu Tang; Jinzhi Lu; Huisheng Zhang Compressor fouling is one of the most prevalent fault modes that contribute to the performance degradation of a gas turbine power plant. Off-line washing is a standard maintenance procedure to recover the fouling degradation, but with washing cost...

...Keyu Jia; Suhui Li Rapid development in data science provides new methods for combustion tuning. This paper describes an artificial neural network (ANN) model that can accurately predict the key parameters in gas turbine combustion tuning and optimization, including NO x emission, combustor...

... endwall film cooling vortex generator gas turbine In modern gas turbines, film cooling is a standard technology to cool the high-temperature components in the first turbine stage [ 1 ]. Since the 1960s, it has been proven to be an effective way to extend the service life of components working...

...Andrea Amedei; Enrico Meli; Andrea Rindi; Egidio Pucci The present paper proposes a methodology to characterize the modal damping ratio as a function of frequency in vibrating systems, with a focus on gas turbine combustion chambers. Proposed methodology correlates the modal damping ratio...

...Junying Wang; Xinqian Zheng Due to the manufacturing error and in-service degradation of gas turbines, there is always a deviation between the actual geometry and the design geometry. This geometric deviation has a prominent uncertainty characteristic, resulting in a dispersion of the gas turbine...

...Houman Hanachi; Jie Liu; Ping Ding; Il Yong Kim; Chris K. Mechefske Gas turbine engines (GTEs) are widely used for power generation, ranging from stationary power plants to airplane propulsion systems. Compressor fouling is the dominant degradation mode in gas turbines that leads to economic losses...

... a static start system, which provides variable frequency voltage and current, to crank the shaft until it is self-sustaining. For black start capabilities, diesel powered or small gas-turbine generators can be used to provide power to motor the GT. In the RACC, each hot and warm air duct has a bypass line...

.... Editor: David Wisler. 21 05 2013 05 08 2013 Fig. 8 Computation flow chart Applying the improved Riccati TMM to a real gas turbine rotor, some numerical results such as critical speeds, mode shapes, and unbalance response of the system are obtained. The rotor...

...Amin Mirzaee; Karim Salahshoor Gas turbines are generally used in power generation, the oil and gas industries, and as jet engines in aircrafts. Fault tolerance and reliability is important in such applications. Thus, accurate modeling and control system design is necessary. In this paper...

...Hamid Asgari; XiaoQi Chen; Mohammad B. Menhaj; Raazesh Sainudiin In this study, firstly a brief description of gas turbine performance is presented. Then, a rebuilt SIMULINK model of a low-power gas turbine based on a previous research [ 25 ] is briefly presented. Section 4 describes ANN...

... algorithm is applied to a heavy-duty gas turbine considering component faults and sensor biases to demonstrate its capability and improved performance in gas path diagnostics. gas turbine gas path diagnostics sparse Bayesian learning basis pursuit underdetermined problem A variety of gas...

...Satoschi Dodo; Tomohiro Asai; Hiromi Koizumi; Hirokazu Takahashi; Shouhei Yoshida; Hiroshi Inoue Contributed by the International Gas Turbine Institute of ASME for publication in the J OURNAL OF T URBOMACHINERY . Manuscript received October 6, 2011; final manuscript received December 7...

...Rakesh K. Bhargava; Lisa Branchini; Francesco Melino; Antonio Peretto There exists a widespread interest in the application of gas turbine power augmentation technologies in both electric power generation and mechanical drive markets, attributable to deregulation in the power generation sector...

... for small deviations. It also employs the concept of the degree of observability to formulate the criteria. The states with high degree of observability and the measurement sets with high overall degree of observability result in high estimation accuracy in gas path diagnostics. A heavy-duty gas turbine...

... air turbine (AHAT) system has been studied to improve operational flexibility and thermal efficiency of the gas turbine power generation system. Advanced humid air turbine is an original system which substitutes the water atomization cooling (WAC) system for the intercooler system of the HAT cycle...

...Klaus Brun; Marybeth Nored; Rainer Kurz Significant interest exists in the military and commercial aerospace industry to better predict and improve the durability of gas turbine jet engines that are operating in hostile desert environments, specifically, jet engines that see significant inlet sand...

... movers as well as economic parameters should be taken into account. In this paper, a thermo-economic method for selecting the optimum nominal power and planning the operational strategy of gas turbine as the prime mover of a medium scale (500–5000 kW) CHP system is presented. Appropriate relations...

...Carl A. Palmer; Royce L. Abel; Peter Sandvik This paper describes the development and initial application studies for an active combustion pattern factor controller (APFC) for gas turbines. The system is based around the use of a novel silicon carbide optical ultraviolet dual diode flame...