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Keywords: numerical simulation
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Proceedings Papers

Proc. ASME. GT2021, Volume 3A: Combustion, Fuels, and Emissions, V03AT04A042, June 7–11, 2021
Paper No: GT2021-59164
... and then y+ Dimensionless wall distance decrease. Swirl ratio Keywords: Pre-swirl system; Pressure ratio; Rotational Reynolds number; Flow characteristics; Temperature reduction; Isentropic exponent Numerical simulation; Dimensionless temperature reduction NOMENCLATURE a Inner radius of cover-plate...
Proceedings Papers

Proc. ASME. GT2021, Volume 4: Controls, Diagnostics, and Instrumentation; Cycle Innovations; Cycle Innovations: Energy Storage; Education; Electric Power, V004T06A009, June 7–11, 2021
Paper No: GT2021-59282
... performance degradation based on numerical simulation. (2) Combined with ontology, case-based reasoning in knowledge expression of blade faults is investigated. The knowledge base for blade faults is constructed with ontology using the simulation results. The integration, traceability, and reuse...
Proceedings Papers

Proc. ASME. GT2021, Volume 5B: Heat Transfer — General Interest; Internal Air Systems; Internal Cooling, V05BT15A002, June 7–11, 2021
Paper No: GT2021-58725
... internal cooling semi-attached ribs numerical simulation Proceedings of ASME Turbo Expo 2021 Turbomachinery Technical Conference and Exposition GT2021 June 7-11, 2021, Virtual, Online GT2021-58725 MULTI-OBJECTIVE OPTIMIZATION ON THE FLUID FLOW AND HEAT TRANSFER OF SEMI-ATTACHED RIB-CHANNELS Xu Wang1...
Proceedings Papers

Proc. ASME. GT2021, Volume 2D: Turbomachinery — Multidisciplinary Design Approaches, Optimization, and Uncertainty Quantification; Radial Turbomachinery Aerodynamics; Unsteady Flows in Turbomachinery, V02DT36A017, June 7–11, 2021
Paper No: GT2021-60126
... optimization; 1. INTRODUCTION Injection source term; Numerical simulation In order to improve the performance of aero-engines and NOMENCLATURE gas turbines, one of the most effective measures is to increase m massflow rate, [kg/s] P Pressure,[Pa] V02DT36A017-1 Copyright © 2021 by ASME turbine inlet temperature...
Proceedings Papers

Proc. ASME. GT2020, Volume 4B: Combustion, Fuels, and Emissions, V04BT04A065, September 21–25, 2020
Paper No: GT2020-16257
... core. The initial fragmentation mechanism of the air blast atomization is applied as the global variables of the stochastic process. Using the above stochastic immersed model, combined with the Large Eddy Simulation method, the numerical simulation of the downstream flow field of a coaxial jet air...
Proceedings Papers

Proc. ASME. GT2020, Volume 10B: Structures and Dynamics, V10BT27A029, September 21–25, 2020
Paper No: GT2020-16276
... impact guide vane rotor numerical simulation maximum effective stress STRESS ANALYSIS OF FAN BLADES SUBJECTED TO HAIL IMPACT Xin Sun, Bo Liu, Chang-fu Han Northwestern Polytechnical University, Xi'an, Shaanxi, China ABSTRACT The rapid development of modern aircraft technology is increasingly...
Proceedings Papers

Proc. ASME. GT2020, Volume 11: Structures and Dynamics: Structural Mechanics, Vibration, and Damping; Supercritical CO2, V011T31A008, September 21–25, 2020
Paper No: GT2020-14785
... approach is presented, reducing the simulation time by a factor of 20. transient simulation compact heat exchanger sCO 2 supercritical carbon dioxide numerical simulation RECUPERATOR TRANSIENT SIMULATION FOR SUPERCRITICAL CARBON DIOXIDE CYCLE IN CSP APPLICATIONS Dhinesh Thanganadar1...
Proceedings Papers

Proc. ASME. GT2020, Volume 7B: Heat Transfer, V07BT12A034, September 21–25, 2020
Paper No: GT2020-14836
...Abstract Abstract Numerical simulations were carried out to study the film cooling effectiveness distributions of different hole arrangements on the suction side of a high pressure turbine blade under rotating condition. The chord length and the height of the blade are 60mm and 80mm...
Proceedings Papers

Proc. ASME. GT2020, Volume 1: Aircraft Engine; Fans and Blowers, V001T01A017, September 21–25, 2020
Paper No: GT2020-14568
...; the increase of the spacing ratio causes the increase of the secondary mass rate and the decrease of the primary mass rate, but the thrust performance is less affected. Keywords: Ejector Nozzle, Numerical Simulation, Flow Mechanism, Supersonic Flow. NOMENCLATURE D inlet diameter of primary nozzle Dp throat...
Proceedings Papers

Proc. ASME. GT2020, Volume 2A: Turbomachinery, V02AT32A016, September 21–25, 2020
Paper No: GT2020-14366
... performance. In this study, non-axisymmetric endwall contouring in a linear compressor cascade was generated through the optimization process. Combined with numerical simulation, wind tunnel tests on linear cascades with flat and contoured endwall were performed with various measurement techniques...
Proceedings Papers

Proc. ASME. GT2020, Volume 2A: Turbomachinery, V02AT32A037, September 21–25, 2020
Paper No: GT2020-14920
... cascade composed of a row of adjustable guide vanes (AGVs) and a row of stators is designed. The effect of the circumferential angle, SGP structure and suction position on the periodicity is studied by numerical simulation. An optimal cascade scheme is selected for experimental research. The results show...
Proceedings Papers

Proc. ASME. GT2020, Volume 2A: Turbomachinery, V02AT32A065, September 21–25, 2020
Paper No: GT2020-16019
...Abstract Abstract Numerical simulations are carried out to investigate the effect of the sloped trench casing treatment on the performance and stability of a compressor cascade, an isolated rotor, and a single compressor stage. The research objects alter from a simplified flow model...
Proceedings Papers

Proc. ASME. GT2019, Volume 2A: Turbomachinery, V02AT45A025, June 17–21, 2019
Paper No: GT2019-91602
.... These works can research more details of surge. This study takes an attempt to use the CFD method with a plenum model to investigate the surge fluctuation in a centrifugal compressor and pipe system. Using the three dimensional transient numerical simulation, authors obtain the low frequency fluctuation...
Proceedings Papers

Proc. ASME. GT2019, Volume 8: Microturbines, Turbochargers, and Small Turbomachines; Steam Turbines, V008T29A010, June 17–21, 2019
Paper No: GT2019-90419
... to identify the mechanism that cause the vibration at certain frequencies. control valve vibration warm-up stage engineering data numerical simulation NUMERICAL INVESTIGATION ON THE VIBRATION OF STEAM TURBINE MAIN INLET CONTROL VALVES CONSIDERING FLUID FORCE EFFECTS Yueyue Li Technology...
Proceedings Papers

Proc. ASME. GT2019, Volume 1: Aircraft Engine; Fans and Blowers; Marine; Honors and Awards, V001T25A003, June 17–21, 2019
Paper No: GT2019-90784
... to the empirical formula proposed by Koch and Smith (ks = 6.2 Ra), setting the equivalent sand grain roughness ks in CFX. NASA Stage67 as calculation model. Then analyzed the effects of various surface roughness on compressor performance and internal flow field through the numerical simulation method. The results...
Proceedings Papers

Proc. ASME. GT2013, Volume 2: Aircraft Engine; Coal, Biomass and Alternative Fuels; Cycle Innovations, V002T07A022, June 3–7, 2013
Paper No: GT2013-95199
... Gas turbine Gas turbine noise Single-stream jet noise Turbojet noise Empirical methods numerical simulation The Center for Reference on Gas Turbines (CRTG), at the Technological Institute of Aeronautics, carries out research in relevant areas of gas turbines, to provide the support...
Proceedings Papers

Proc. ASME. GT2012, Volume 2: Combustion, Fuels and Emissions, Parts A and B, 701-712, June 11–15, 2012
Paper No: GT2012-68997
... that show the usefulness and the potential of the concept. However, it is also shown that additional fine-tuning is still necessary to further reduce the pollutant emissions. FLOX ® HiPerMix ® EZEE ® flameless combustion gas turbine combustion high temperature gas turbine numerical simulation...
Proceedings Papers

Proc. ASME. GT2012, Volume 3: Cycle Innovations; Education; Electric Power; Fans and Blowers; Industrial and Cogeneration, 961-977, June 11–15, 2012
Paper No: GT2012-69133
... Transonic compressor rotor Water tip injection Wet compression Rotating stall Numerical simulation The rotor blade tip leakage flow and associated formation of the tip leakage vortex and interaction of the tip leakage vortex with the shockwave, particularly in the case of a transonic...
Proceedings Papers

Proc. ASME. GT2012, Volume 3: Cycle Innovations; Education; Electric Power; Fans and Blowers; Industrial and Cogeneration, 979-992, June 11–15, 2012
Paper No: GT2012-69158
... Wet compression Separated flow Numerical simulation Compressor cascade Generally, droplets are injected into air at inlet or interstage of a compressor. However, both cases did not consider how to utilize the kinetic energy of these moving droplets. Under the adverse pressure gradient...
Proceedings Papers

Proc. ASME. GT2011, Volume 5: Heat Transfer, Parts A and B, 1145-1154, June 6–10, 2011
Paper No: GT2011-45286
... By using the CFX software, three-dimensional flow and heat transfer characteristics in rectangular cooling ducts with in-line and staggered array pin-fins of gas turbine blade trailing edge were numerically simulated. The effects of in-line and staggered arrays of pin-fins, flow Reynolds number...