Results 201 to 210 of about 4,884 (235)
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Dynamic simulations of post-stall performance in multistage axial compressors
Journal of Thermal Science, 2012In this contribution a quasi-one-dimensional tool for stationary and transient simulations of post-stall flows in multistage axial compressors is presented. An adapted version of the 1D Euler equations with additional source terms is discretized with a finite volume method and solved in time by a fourth-order Runge-Kutta scheme.
Wenhai Du +2 more
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An Analytical Method for the Fault Diagnosis of Axial Multistage Compressors
Volume 3: Coal, Biomass and Alternative Fuels; Combustion and Fuels; Oil and Gas Applications; Cycle Innovations, 1991A deterministic approach for troubleshooting in axial multistage flow compressors, that is to say, the solution of the diagnostic or inverse problem is presented. The approach utilizes a model which is capable of predicting the compressor performance with and without faults — solution of analysis or direct problems — previously developed
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Influence of Tip Clearance on the Performance and Matching of Multistage Axial Compressors
Volume 2A: Turbomachinery, 2016Tip clearance has great influence on the performance of multistage axial compressors including efficiency, pressure rise, mass flow, as well as matching. This paper reports a study into the influence of tip clearance on the performance and matching of a 5-stage axial compressor by a numerical method.
Xinqian Zheng, Heli Yang
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Flow visualization for investigating stator losses in a multistage axial compressor
Experiments in Fluids, 2015The methodology and implementation of a powder-paint-based flow visualization technique along with the illuminated flow physics are presented in detail for application in a three-stage axial compressor. While flow visualization often accompanies detailed studies, the turbomachinery literature lacks a comprehensive study which both utilizes flow ...
Natalie R. Smith, Nicole L. Key
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Validation of a 1D Transient Simulation Model of a Multistage Axial Compressor
ASME 2015 Gas Turbine India Conference, 2015An unsteady one-dimensional dynamic model has been developed at Georgia Tech to investigate the impact of stage characteristics as well as load distribution on the compression and expansion waves that develop prior to a surge event in a multistage axial compressor.
Reema Kundu +2 more
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Influence of rain droplets on the stage characteristics of an axial multistage compressor
51st AIAA/SAE/ASEE Joint Propulsion Conference, 2015Aircraft engines are required to operate under different environmental conditions while keeping safety and reliability as its paramount priority. During flight operation, liquid water may enter the engine and can adversely affect the engine performance and operability. In order to research deeply into how wet compression affects aero-engine performance
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A New Method for the Aerodynamic Design of Multistage Axial-Flow Compressors
Journal of the Aeronautical Sciences, 1948This paper describes the derivation of an optimum inlet Mach Number for the first stagesof an axial-flow compressor based on free vortex design. The optimum Mach Number is related to the given inlet conditions, dimensions, and tip speed and specifies the maximum amount of work tha t can be done on the fluid and the corresponding free vortex velocity ...
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Multistage Axial Compressor Program on Tip Clearance Effects.
1981Abstract : Tip clearance has long been known to be a source of losses in axial compressors with cantilevered blades. The reasons for the losses, however, are not well understood and current practice in engine design still requires extensive effort to maintain constant minimal operating clearances over a wide range of conditions.
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Optimization Algorithm for Axial Multistage Compressor Workflow
AIAA Propulsion and Energy 2020 Forum, 2020Grigorii M. Popov +5 more
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A case study of spanwise traversing in an industrial multistage axial compressor
Proceedings of Global Power & Propulsion SocietySpanwise traversing is widely employed in laboratory turbomachinery research, providing valuable insights into flow structures that are valuable in design system validation. However, it requires sufficient space within the flow path for probe immersion, as well as for minimised probe–flow interaction.
Viacheslav A. Sedunin +4 more
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