scholarly journals Automated Virtual Testing Rig Incorporating Multi-level Models of Gas Turbine Engines

2018 ◽  
Vol 220 ◽  
pp. 03001
Author(s):  
Andrey Tkachenko ◽  
Ilia Krupenich ◽  
Evgeny Filinov ◽  
Yaroslav Ostapyuk
Keyword(s):  
Gas Turbine ◽  
Power Plants ◽  
Educational Process ◽  
Turbine Engines ◽  
Experimental Investigations ◽  
Gas Turbine Engines ◽  
Engine Operation ◽  
Virtual Testing ◽  
Research Activities ◽  
Multi Level

This article describes the multi-level approach to developing the virtual testing rig of gas turbine engines and power plants. The described virtual rig is developed on the basis of computer-aided system of thermogasdynamic calculations and analysis ASTRA, developed at Samara National Research University. Existing testing rig is widely used in educational process to supply the students’ research activities with the information on engine operation in a variety of ambient and flight conditions during transients. An approach to upgrading the virtual testing rig is proposed. The described modifications would provide the capabilities to solve more complex research tasks, including investigation of influence of geometry of engine elements on the engine characteristics, multidisciplinary investigations, identification of engine models using the results of experimental investigations and identification of sources of engine deficiencies during the development phase of engine designing.

scholarly journals Automated Virtual Testing Rig Incorporating Multi-level Models of Gas Turbine Engines

2018 ◽  
Vol 3 (4) ◽  
pp. 221
Author(s):  
A Y Tkachenko ◽  
I N Krupenich ◽  
E P Filinov ◽  
Y A Ostapyuk
Keyword(s):  
Gas Turbine ◽  
Turbine Engines ◽  
Gas Turbine Engines ◽  
Virtual Testing ◽  
Multi Level

.

Development of Fault Diagnosis and Failure Prediction Techniques for Small Gas Turbine Engines

2001 ◽  
Author(s):  
Craig R. Davison ◽  
A. M. Birk
Keyword(s):  
Fault Diagnosis ◽  
Gas Turbine ◽  
Operating Time ◽  
Turbine Engines ◽  
Time To Failure ◽  
Gas Turbine Engines ◽  
Ambient Conditions ◽  
Engine Operation ◽  
Maintenance Cycle ◽  
Prediction Techniques

A computer model of a gas turbine auxiliary power unit was produced to develop techniques for fault diagnosis and prediction of remaining life in small gas turbine engines. Due to the relatively low capital cost of small engines it is important that the techniques have both low capital and operating costs. Failing engine components were identified with fault maps, and an algorithm was developed for predicting the time to failure, based on the engine’s past operation. Simulating daily engine operation over a maintenance cycle tested the techniques for identification and prediction. The simulation included daily variations in ambient conditions, operating time, load, engine speed and operating environment, to determine the amount of degradation per day. The algorithm successfully adapted to the daily changes and corrected the operating point back to standard conditions to predict the time to failure.

U.S. Navy Development of Air Assist Fuel Nozzle System for the 501K Series Gas Turbine Engines

2002 ◽  
Author(s):  
Matthew G. Hoffman ◽  
Richard J. DeCorso ◽  
Dennis M. Russom
Keyword(s):  
Gas Turbine ◽  
Failure Modes ◽  
Development Program ◽  
Turbine Engines ◽  
Gas Turbine Engines ◽  
Engine Operation ◽  
Air Blast ◽  
Blast Design ◽  
Fuel Nozzle ◽  
The U.S

The U.S. Navy has experienced problems with liquid fuel nozzles used on the Rolls Royce (formerly Allison) 501K series marine gas turbine engines. The 501K engines used by the U.S. Navy power Ship Service Gas Turbine Generators (SSGTGs) on a number of destroyer and cruiser class ships. Over roughly the last 25 years, 3 different nozzle designs have been employed, the latest and current nozzle being a piloted air blast design. The primary failure modes of these designs were internal fuel passage coking and external carbon deposits. The current piloted air blast design has a hard time replacement requirement of 1500 hours. This life is considered unacceptable. To improve fuel nozzle life, the Navy and Turbine Fuel Technologies (formerly Delavan) teamed in a fast track program to develop a new fuel nozzle with a target life of 5000 hours and 500 starts. As a result, an air assist/air blast nozzle was developed and delivered in approximately 6 months. In addition to the nozzle itself, a system was developed to provide assist air to the fuel nozzles to help atomize the fuel for better ignition. Nozzle sets and air assist systems have been delivered and tested at the NSWC Philadelphia LBES (Land Based Engineering Site). In addition, nozzle sets have been installed aboard operating ships for in-service evaluations. During the Phase one evaluation (July 2000 to June 2001) aboard USS Porter (DDG 78) a set of nozzles accumulated over 3500 hours of trouble free operation, indicating the target of 5000 hours is achievable. As of this writing these nozzles have in excess of 5700 hours. The improvements in nozzle life provided by the new fuel nozzle design will result in cost savings through out the life cycle of the GTGS. In fact, the evaluation nozzles are already improving engine operation and reliability even before the nozzles’ official fleet introduction. This paper describes the fuel nozzle and air assist system development program and results of OEM, LBES and fleet testing.

Predictive Compressor Wash Optimization for Economic Operation of Gas Turbine

2018 ◽  
Vol 140 (12) ◽  
Author(s):  
Houman Hanachi ◽  
Jie Liu ◽  
Ping Ding ◽  
Il Yong Kim ◽  
Chris K. Mechefske
Keyword(s):  
Gas Turbine ◽  
Gas Turbines ◽  
Power Plants ◽  
Economic Losses ◽  
Turbine Engines ◽  
Gas Turbine Engines ◽  
Considerable Saving ◽  
Service Period ◽  
Power Deficit

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 due to power deficit and extra fuel consumption. Washing of the compressor removes the fouling matter and retrieves the performance, while causing a variety of costs including loss of production during service time. In this paper, the effect of fouling and washing on the revenue of the power plant is studied, and a general solution for the optimum time between washes of the compressor under variable fouling rates and demand power is presented and analyzed. The framework calculates the savings achievable with optimization of time between washes during a service period. The methodology is utilized to optimize total costs of fouling and washing and analyze the effects and sensitivities to different technical and economic factors. As a case study, it is applied to a sample set of cumulative gas turbine operating data for a time-between-overhauls and the potential saving has been estimated. The results show considerable saving potential through optimization of time between washes.

scholarly journals Generalized High Speed Simulation of Gas Turbine Engines

1990 ◽  
Author(s):  
Nanahisa Sugiyama
Keyword(s):  
Real Time ◽  
Gas Turbine ◽  
Gas Turbines ◽  
High Speed ◽  
Power Plants ◽  
Turbine Engines ◽  
Gas Turbine Engines ◽  
Jet Engines ◽  
Industrial Gas Turbine ◽  
High Degree

This paper describes a real-time or faster-than-real-time simulation of gas turbine engines, using an ultra high speed, multi-processor digital computer, designated the AD100. It is shown that the frame time is reduced significantly without any loss of fidelity of a simulation. The simulation program is aimed at a high degree of flexibility to allow changes in engine configuration. This makes it possible to simulate various types of gas turbine engines, including jet engines, gas turbines for vehicles and power plants, in real-time. Some simulation results for an intercooled-reheat type industrial gas turbine are shown.

scholarly journals Calculating gas turbine thermodynamic cycle using GateCycle TM software

2017 ◽  
Vol 20 (K5) ◽  
pp. 30-36
Author(s):  
Manh Duc Vu ◽  
Thang Huy Ha ◽  
Thang Trong Dao ◽  
Kien Trung Nguyen
Keyword(s):  
Gas Turbine ◽  
High Mobility ◽  
Thermodynamic Cycle ◽  
Turbine Engines ◽  
Gas Turbine Engines ◽  
General Electric ◽  
Engine Operation

Gas turbine engines are widely used in aviation and naval ships for their compactness and high mobility. In Vietnam, the researches and investigations for this type of engine are less interested. In this paper, the authors present methods of modeling and calculating gas turbine thermodynamic cycle by using the General Electric software – GateCycleTM. The results can be used for the study of gas turbine engines and for engine operation.

Gas turbine engines used as power units for traction rolling stock fueled by liquefied natural gas

2021 ◽  
pp. 55-65
Author(s):  
Yuri V. BABKOV ◽  
◽  
Denis I. PROKHOR ◽  
Dmitry V. KOTYAEV ◽  
Nikolay V. GRACHEV ◽  
...  
Keyword(s):  
Gas Turbine ◽  
Power Plants ◽  
Normal Operation ◽  
Rolling Stock ◽  
Turbine Engines ◽  
Gas Turbine Engines ◽  
Equipment Operation ◽  
Advantages And Disadvantages ◽  
Technical Requirements ◽  
Loading Modes

Objective: To determine the possibility and directions for increasing the efficiency of gas turbine traction based on the experience of using gas turbine engines as power plants in railway transport. Methods: The practice of operating gas engine locomotives in trial runs and normal operation with trains of 9 thousand tons is used. Records of onboard systems for fixing the parameters of locomo-tive equipment operation are taken into account. Results: Comparison of the application experi-ence of gas turbine engines in various branches of the national economy are carried out. The fea-tures of using gas turbine engines in unstable loading modes are analyzed. Their effectiveness is characte¬rized and directions for its further increase are established. The values of the maintenance labor intensity of gas turbine locomotives and diesel locomotives are revealed. The actual load of gas turbine locomotive equipment at all traction modes has been determined. Practical im-portance: Significant differences in maintenance of power units of gas turbine locomotives and die-sel locomotives have been determined. The performed analysis of the operation results allowed to determine and prove in practice the advantages and disadvantages of convertible aircraft gas tur-bine engines, to establish requirements for them in order to increase the efficiency of using gas turbine locomotives and to develop a draft of technical requirements for a power unit for the main gas turbine locomotive GT1h.

Numerical and Experimental Investigations of Combustion Instability Phenomena in Gas Turbine Burners for Heavy Duty and Aero-Engine Applications

2011 ◽  
Author(s):  
Daniele Accornero ◽  
Mario Caruggi ◽  
Alessandro Nilberto ◽  
Ferruccio Pittaluga
Keyword(s):  
Gas Turbine ◽  
Power Plants ◽  
Combustion Instability ◽  
Experimental Investigations ◽  
Heavy Duty ◽  
Analysis And Design ◽  
Research Activities ◽  
Aero Engine ◽  
The Stability ◽  
Combustion Processes

In the recent years, as the technical developments in the field of GT related technology are more and more driven by regulations on environmental pollution control, a whole series of different industrial evolution and innovation lines are investigated so to make combustion processes ever “cleaner”. Among those, there is for sure the adoption of lean and ultra lean combustion processes to be pursued by means of air-fuel premixing combustion technologies. Within this scenario, at DIMSET/SCL (Savona Combustion Laboratory, Dept. of Thermal Machines, Energy Systems and Transportation, Univ. of Genoa) since several years research activities are carried out, mainly within the frame of EC-funded Research Programmes (ICLEAC, MUSCLES, TLC, H2-IGCC) and cooperation with industrial companies of the energy sector (Ansaldo Energia S.p.A.) and aero-propulsion (Avio Group) sectors. Research activities can take advantage of a close integration between experimental facilities, such as several reactive and non-reactive dedicated burner test-rigs, instrumented with LDV, PDA and PIV laser-based equipment, as well as of in-house continuously improved reactive Navier-Stokes solvers for combustor analysis (NastComb solver) and design (TPM method). The paper deals with the stability characterisation of the different combustion-processes taking place within several GT power plants, namely, the heavy duty AE64-3A heavy duty gas turbine (Ansaldo Energia), already present on the market, the so-called Liquid and Gas Rapid Pre-Mix burners, LRPM and GRPM, designed at DIMSET/SCL and still prototypical, and the Avio-designed LPP (Lean Premixed Prevaporised) burner, for aero-engine applications. The research has been addressed at in-depth characterising the stability behaviour of the burner’s operation. In particular, those aspects have been investigated deemed of greatest importance in affecting a stable performance profile, such as swirlers’ design, burner’s internal aerodynamics, premixing duct configuration, fuel typology and injection modalities, etc. The paper gives a synoptic view both of the research approaches (experimental, instrumental, numerical analysis and design) jointly pursued by DIMSET/SCL team in investigating the combustion instability, as well as of the obtained results, which help in pointing out those burner design and operational parameters which appear as most critical in affecting instability insurgence and self-sustainment.

Sign in / Sign up

Export Citation Format

Share Document