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Keywords: modeling
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Proceedings Papers

Proc. ASME. GT2023, Volume 1: Aircraft Engine, V001T01A002, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-100547
... Abstract In high-speed gear systems for aeroengines, it is important to reduce the fluid dynamic loss, which accounts for the majority of power loss, to improve the fuel efficiency. For reasonable loss-reduction and the standardization of low-power-loss designs, a fluid dynamic loss model...
Proceedings Papers

Proc. ASME. GT2023, Volume 10: Steam Turbine, V010T20A009, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-101666
... a theoretical model describing the liquid-film instability, the properties of the ligaments, and the droplet size dispersed downstream. The circumferential wavelength at the trailing edge is determined by the RT instability, which is accelerated by the shear force of the gas flow and gravity. The ligament...
Proceedings Papers

Proc. ASME. GT2023, Volume 11B: Structures and Dynamics — Emerging Methods in Engineering Design, Analysis, and Additive Manufacturing; Fatigue, Fracture, and Life Prediction; Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration, V11BT26A001, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-100631
... toolbox can perform analyses faster than the FEM and allows modeling and solving unique rotor dynamics problem such as unbalance response. Various analyses such as plotting the Campbell diagram, finding natural frequencies, determining mode shapes, determining the system frequency response due...
Proceedings Papers

Proc. ASME. GT2023, Volume 11B: Structures and Dynamics — Emerging Methods in Engineering Design, Analysis, and Additive Manufacturing; Fatigue, Fracture, and Life Prediction; Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration, V11BT25A004, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-101940
... of a probabilistic life model of cast material including defects such as porosity. The focus of this work is the investigation of the influence of casting defects on the LCF performance of cast MAR-M247. A comprehensive test program on defective and defect-free specimens at realistic engine conditions, i.e...
Proceedings Papers

Proc. ASME. GT2022, Volume 1: Aircraft Engine; Ceramics and Ceramic Composites, V001T02A005, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-81964
... Abstract The majority of lifetime models associates the failure of thermal barrier coatings to an oxidation of the bond coat. A thickening of the thermally grown oxide leads to a conversion of stresses at the undulated ceramic-metal interface, supporting the propagation of existing micro cracks...
Proceedings Papers

Proc. ASME. GT2022, Volume 1: Aircraft Engine; Ceramics and Ceramic Composites, V001T01A017, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-81823
... Abstract Demand is constantly increasing for high-fidelity models that execute quickly. To increase the fidelity of aircraft engine simulations, low-fidelity thermodynamic models are often interfaced with high-fidelity models used for capturing 2D and 3D effects. Unfortunately, interfaces...
Proceedings Papers

Proc. ASME. GT2022, Volume 2: Coal, Biomass, Hydrogen, and Alternative Fuels; Controls, Diagnostics, and Instrumentation; Steam Turbine, V002T05A022, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-83233
... Abstract Nonlinear gas path analysis (NGPA) is an important method for gas path fault diagnosis, and it is also the main technology for component performance estimation of gas turbine engines. However, the solution speed of the nonlinear gas path model is difficult to meet the time requirements...
Topics: Gas turbines
Proceedings Papers

Proc. ASME. GT2022, Volume 3A: Combustion, Fuels, and Emissions, V03AT04A043, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-81654
... Abstract An improved primary atomization model for the jet-in-crossflow (JICF) atomization has been suggested and incorporated into the solver SprayFoam of OpenFOAM. The assumption of replacing jets with blobs, the maximum growth rate of the Kelvin-Helmholtz (K-H) wave, and its corresponding...
Proceedings Papers

Proc. ASME. GT2022, Volume 7: Industrial and Cogeneration; Manufacturing Materials and Metallurgy; Microturbines, Turbochargers, and Small Turbomachines; Oil & Gas Applications, V007T16A003, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-80828
... for heating and cooling, hospitals using CHP systems are more energy-efficient, leading also to a reduction of the global emissions connected to the hospital activity. The present study involves the development of a numerical model of the gas turbine-based cogeneration system installed in a hospital facility...
Proceedings Papers

Proc. ASME. GT2022, Volume 7: Industrial and Cogeneration; Manufacturing Materials and Metallurgy; Microturbines, Turbochargers, and Small Turbomachines; Oil & Gas Applications, V007T17A021, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-83214
..., the results of machining tests on a demonstrator blisk made of Inconel 718 are presented and discussed. milling blisk CAM digital twin process design optimisation manufacturing simulation modeling turbomachinery Proceedings of ASME Turbo Expo 2022 Turbomachinery Technical Conference...
Proceedings Papers

Proc. ASME. GT2022, Volume 10B: Turbomachinery — Axial Flow Turbine Aerodynamics; Deposition, Erosion, Fouling, and Icing; Radial Turbomachinery Aerodynamics, V10BT30A011, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-81357
... concerning the loss coefficient measured in a large-scale cascade for a large variation of the Reynolds number, the reduced frequency, and the flow coefficient. Linear models have been educated accounting for the Occam’s razor parsimony criterion, condensing the effects due to the parameter variation in few...
Proceedings Papers

Proc. ASME. GT2021, Volume 3A: Combustion, Fuels, and Emissions, V03AT04A020, June 7–11, 2021
Publisher: American Society of Mechanical Engineers
Paper No: GT2021-58830
... ratios, whereas with increasing ammonia content the limit is decreasing. Furthermore, a model for the lean blowout limits were derived, which is able to predict the acquired experimental data with high accuracy. lean blowout hydrogen ammonia modeling Proceedings of ASME Turbo Expo 2021...
Proceedings Papers

Proc. ASME. GT2021, Volume 2C: Turbomachinery — Design Methods and CFD Modeling for Turbomachinery; Ducts, Noise, and Component Interactions, V02CT34A038, June 7–11, 2021
Publisher: American Society of Mechanical Engineers
Paper No: GT2021-59951
... Abstract A technique of representing and approximating of gas turbine engine (GTE) compressor maps is given. The aims of this study are to improve the efficiency of processing GTE test results and the reliability of GTE mathematical model. The paper analyzes various approaches of approximating...
Proceedings Papers

Proc. ASME. GT2021, Volume 6: Ceramics and Ceramic Composites; Coal, Biomass, Hydrogen, and Alternative Fuels; Microturbines, Turbochargers, and Small Turbomachines, V006T03A015, June 7–11, 2021
Publisher: American Society of Mechanical Engineers
Paper No: GT2021-60093
... Abstract The development of advanced reaction models to predict pollutant emissions in aero-engine combustors usually relies on surrogate formulations of a specific jet fuel for mimicking its chemical composition. 1,3,5-trimethylbenzene is one of the suitable components to represent aromatics...
Proceedings Papers

Proc. ASME. GT2021, Volume 7: Industrial and Cogeneration; Manufacturing Materials and Metallurgy, V007T17A012, June 7–11, 2021
Publisher: American Society of Mechanical Engineers
Paper No: GT2021-59562
... digital environment exploration facilitated variation manufacturing variations modeling turbomachinery Proceedings of ASME Turbo Expo 2021 Turbomachinery Technical Conference and Exposition GT2021 June 7-11, 2021, Virtual, Online GT2021-59562 KNOWLEDGE-BASED ADAPTATION OF PRODUCT AND PROCESS...
Proceedings Papers

Proc. ASME. GT2020, Volume 5: Controls, Diagnostics, and Instrumentation; Cycle Innovations; Cycle Innovations: Energy Storage, V005T05A022, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-15641
... with a model of the equipment in healthy conditions using machine learning techniques applied on historical data. During operation a warning is issued when expected and actual measurements do not match. Although these solutions have proven their value to detect abnormal behaviors, they generate a large number...
Proceedings Papers

Proc. ASME. GT2020, Volume 2A: Turbomachinery, V02AT32A050, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-15374
...-marching CFD model. The model was validated with experimental data obtained in a test rig which was designed and built specially for that research. The first crucial negative effect of the distorted inlet velocity profile is a variable incidence angle of the rotor. Both the CFD calculations...
Proceedings Papers

Proc. ASME. GT2020, Volume 2B: Turbomachinery, V02BT34A003, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-14480
... Abstract For the reliable operation of modern gas turbines, Thermal Barrier Coatings (TBCs) need to withstand a wide range of ambient conditions resulting from impurities in inlet air or fuels. A novel deposition model has been developed that enables the prediction of deposition and transport...
Proceedings Papers

Proc. ASME. GT2020, Volume 2E: Turbomachinery, V02ET39A026, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-16097
... fluid dynamics (CFD) modeling internal flow PHYSICAL QUANTITY SYNERGY IN THE INTERNAL FLOW FIELD AND APPLICATION IN RADIAL-INFLOW TURBINES Ziyi Shao1,2, Xuehui Zhang1,2,3, Xing Wang1,3, Yangli Zhu1,2,3, Wen Li1,2,3, Haisheng Chen1,2,3 1 Institute of Engineering Thermophysics, Chinese Academy...