... film cooling effect at M = 0.5. e-mail:  xinyan@mail.xjtu.edu.cn 29 03 2021 01 07 2021 27 09 2021 cutback land film cooling DDES unsteady National Natural Science Foundation of China 10.13039/501100001809 52076165 As the modern gas turbine...

..., an innovative calculation approach called the equalized timescales method (ET) was applied for the modeling of unsteady conjugate heat transfer (CHT). In the course of the research, the setup of the ET approach has been additionally investigated. Using the ET method, the mass flow rate and the rotational speed...

... , Munich, Germany, May 30–June 2, pp. 1 – 12 . [11] Panek , L. , Huth , M. , and Farisco , F. , 2017 , “ Thermo-Acoustic Characterization of Can-Can Interaction of a Can-Annular Combustion System Based on Unsteady CFD LES Simulation ,” First Global Power and Propulsion Forum , Zurich...

... component, axial component, and torsion moment. The blade vibration responses induced by NECFE are increased by 11.66% and 19.94% in tangential and axial. Condensation Flow induced vibration Multiphase flows Nuclear Phase change Structural dynamics Unsteady Flow induced noise Nuclear...

... Combustors Experimental Gas turbine technology Thermoacoustics Unsteady Lean premixed combustion has been established as a common technology to achieve low NO x emissions of stationary gas turbines for power generation. However, this technology is known to be highly susceptible to thermoacoustic...

...Chirag Trivedi This work investigates the unsteady pressure fluctuations and inception of vortical flow in a hydraulic turbine during speed-no-load conditions. At speed-no-load (SNL), the available hydraulic energy dissipates to the blades without producing an effective torque. This results in high...

... Nonintrusive diagnostics Thermoacoustics Unsteady Unsteady flows Increasingly stringent pollutant emission regulations lead aircraft engine manufacturers to move away from traditional diffusion flame based combustion systems [ 1 ]. To decrease nitrogen oxides (NO x ) emissions, lean premixed...

... , “ Neural Network Tool box™ User's Guide ,” The MathWorks Inc., Natick, MA. Energy systems Gas turbine technology Modeling Neural networks Unsteady Control systems To address the challenge of modeling gas turbine (GT) start-up, white-box, gray-box, and black-box models can...

... of a given unstable/stable operation point in terms of their distance from the Hopf bifurcation point occurs via the system growth/damping rates. The methodologies solely rely on dynamic measurement data (i.e., unsteady heat release and/or pressure recordings) while avoiding the need of any external...

... Wisler. 26 07 2017 09 08 2017 Aeronautical propulsion Aerothermodynamics Combustion Combustors Computational fluid dynamics Engines Flame Fuel combustion Fuels Gas turbine technology Modeling Multiphase flows Sprays Swirling Turbulence Turbulent Two-phase Unsteady...

... , “ Transverse Combustion Instabilities: Acoustic, Fluid-Mechanic, and Flame Processes ,” Prog. Energy Combust. Sci. , 49 , pp. 1 – 39 . 10.1016/j.pecs.2015.01.001 [3] Culick , F. E. C. , 2006 , “ Unsteady Motions in Combustion Chambers for Propulsion Systems ,” North Atlantic Treaty Organization...

... systems Power Unsteady Control systems Co- generation 14 07 2017 29 07 2017 Contributed by the Industrial and Cogeneration Committee of ASME for publication in the J OURNAL OF E NGINEERING FOR G AS T URBINES AND P OWER . Manuscript received July 14, 2017; final manuscript...

... Fluids Gas turbine technology Multiphase flows Separated Shear Flows Turbulent Two-phase Unsteady Aerospace Propulsion systems Copyright © 2018 by ASME 2018 0742-4795/2018/140(3)/032601/9/ $25.00 ...

.... R. , and Worth , N. A. , 2014 , “ Flame Dynamics and Unsteady Heat Release Rate of Self-Excited Azimuthal Modes in an Annular Combustor ,” Combust. Flame , 161 ( 10 ), pp. 2565 – 2578 . 10.1016/j.combustflame.2014.03.021 [30] Worth , N. A. , Dawson , J. R. , Sidey , J. A. M...

... conditions are implemented, closed at hub and tip and one-side-open at the trailing edge, so that water can only exit the domain. Unsteady capabilities are included into the model using the dual time-stepping method of Jameson [ 19 ]. The breakup is implemented as an algebraic model: at any time...

... ), pp. 50 – 57 . 10.1115/1.2930154 [39] Day , I. J. , Greitzer , E. M. , and Cumpsty , N. A. , 1978 , “ Prediction of Compressor Performance in Rotating Stall ,” ASME J. Eng. Power , 100 ( 1 ), pp. 1 – 12 . 10.1115/1.3446318 Energy systems Unsteady Vibration...

.... Furthermore, a loosely coupled procedure is developed to combine this enhanced flow solver with a solid conduction solver for solving unsteady conjugate heat transfer (CHT) problems for transient natural convection. This allows very large computational time-steps to be used without any stability issues...

..., superimposed with the line of equation y  = 1308 x −0.6 The SMD is plotted versus the gas velocity for different frequencies in Fig. 4 and highlights the unsteady effects of the spray generation. Each closed curve corresponds to a operating point excited at a constant frequency. First...

... levels of cavity seal effectiveness. Unlike the double lip seal, the single lip seal is sensitive to overall Reynolds number, the addition of a simulated blade pressure field, and large-scale nonuniform ingestion. In the case of both seals, unsteady pressure variations attributed to shear layer...

... and comparing it to experimental results. Large eddy simulation (LES) turbulence modeling is used to capture the flow physics that affects the inherently unsteady jet breakup phenomenon. The oil jet spreading width is the primary metric used for comparing the numerical and experimental results. The results...