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Transition Process from Diffuser Stall to Stage Stall in a Centrifugal Compressor with a Vaned Diffuser [PDF]
International Journal of Rotating Machinery, 2017 The transition process from a diffuser rotating stall to a stage stall in a centrifugal compressor with a vaned diffuser was investigated by experimental and numerical analyses. From the velocity measurements, it was found that the rotating stall existed
Nobumichi Fujisawa, Yutaka Ohta
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Nihon Kikai Gakkai ronbunshu, 2021 Unsteady diffuser stall behavior in a centrifugal compressor with a vaneless diffuser was investigated by experimental and computational analyses. The diffuser stall generated as the mass flow rate decreased. The diffuser stall cell rotated at 25-30 % of
Nobumichi FUJISAWA +3 more
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Diffuser Total Efficiency Using Generalized Actuator Disc Model and Its Maximization Method
Energies, 2021 The diffuser total efficiency was formulated and defined based on the generalized actuator disc model for the index of the efficiency of the diffuser-alone of the diffuser-augmented wind turbines.
Shigeo Yoshida +3 more
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Research Status of Gas Turbine Exhaust Diffuser
发电技术, 2021 Gas turbine is the important equipment used in security and economic field of the country. The aerodynamic performance of exhaust diffuser has an important influence on the thermodynamic efficiency of gas turbine. The flow interaction between the exhaust
Bin QIU, Jinglun FU
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PLoS ONE, 2020 Achieving an optimal configuration of the diffuser is indispensable for high pump performances. In this work, a numerical study on diffuser configuration is conducted for a high pump performance using a computational fluid dynamics code, and the effects ...
Ying-Yuan Liu +4 more
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Energies, 2021 A numerical study was conducted to investigate the flow and heat transfer characteristics of a supersonic second throat exhaust diffuser for high-altitude simulations. The numerical results were satisfactorily validated by the experimental results.
Seonghwi Jo +3 more
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Numerical Investigations at High Altitudes for Nozzles Performance Monitoring
JISR on Computing, 2023 Large area ratio nozzles that are employed for space propulsion applications are not meant to be tested at the ground- level conditions because of the flow conditions that occur in their divergent section due to their low exhaust pressures.
Nauman Qureshi
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Известия высших учебных заведений: Проблемы энергетики, 2021 THE PURPOSE. Determination of the optimal law of swirling of the blades of the last stage of a stationary GTU. Due to the specificity of its operating conditions - in a system with a diffuser - the traditional laws of swirling lead to a non-optimal flow ...
L O. Vokin +2 more
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Experimental Study of Pre-evacuation Effect on Second throat Diffuser Starting Process [PDF]
علوم، فناوری و کاربردهای فضایی, 2022 In the present study, the effect of pre- evacuation on starting process of a second throat exhaust diffuser has been investigated experimentally by examining a thrust optimized parabolic nozzle.
Nematollah Fouladi +2 more
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Metamaterials simulation for thermal diffusers
EPJ Applied Metamaterials, 2022 The heat extraction efficiency of a cylindrical diffuser can be optimized by applying differential geometry [J.-P. Huang, Theoretical Thermotics: Transformation Thermotics and Extended Theories for Thermal Metamaterials (Springer, 2020)], in order to ...
Nuñez-Betancourt Luis Alfonso +1 more
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