Výsledky vyhledávání

Large Eddy Simulation Investigation of Low Rossby Number Buoyant Flow in Rotating Cavities

Autor: Zixiang Sun, Feng Gao, John W. Chew, Dario Amirante

Publikováno v: Journal of Engineering for Gas Turbines and Power. 144

Flow and heat transfer in axial compressor disk cavities involve strong interaction of axial throughflow at the disk bores with centrifugal buoyant flow in the cavities. This paper presents large eddy simulation (LES) of flow and heat transfer in rot

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5d2ae46673310827bb35a7c3c36ba67b
https://doi.org/10.1115/1.4055686

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LES Investigation of Low Rossby Number Buoyant Flow in Rotating Cavities

Autor: Zixiang Sun, Feng Gao, John Chew, Dario Amirante

Publikováno v: Volume 6B: Heat Transfer — General Interest/Additive Manufacturing Impacts on Heat Transfer; Internal Air Systems; Internal Cooling.

Flow and heat transfer in axial compressor disc cavities involve strong interaction of axial throughflow at the disc bores with centrifugal buoyant flow in the cavities. This paper presents large eddy simulation (LES) of flow and heat transfer in rot

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::bb138a3875ef8cc5da0b4926821d93ba
https://doi.org/10.1115/gt2022-81338

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A CFD Assessment of Engine Core Zone Casing Heat Transfer

Autor: Nicholas J. Hills, Richard Scott, Zixiang Sun

Publikováno v: Volume 5B: Heat Transfer.

A systematic CFD investigation was conducted to assess the core zone (CZ) casing heat transfer of a large civil aircraft engine. Three key engine operating conditions, maximum takeoff (MTO), cruise (CRZ) and ground idle (GI) were analyzed. Steady flo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::54d8e97a9d44e2f830f020e48ae0ee4c
https://doi.org/10.1115/gt2019-90381

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Analysis of fluid flow and heat transfer in industrial fluid couplings

Autor: Fomison Neil R, D Edwards, Zixiang Sun, John W. Chew

Publikováno v: Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science. 223:2049-2062

Computational fluid dynamics solutions are presented for unsteady flow and heat transfer in model fluid couplings. Factors studied include the effects of coupling size, cooling throughflow, vane numbers, and angled vanes. Predictions of torque charac

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b6a89084e80cbe292523379509183d4b
https://doi.org/10.1243/09544062jmes1478

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Coupled Aerothermal Modeling of a Rotating Cavity With Radial Inflow

Autor: John W. Chew, Zixiang Sun, Nicholas J. Hills, Dario Amirante

Publikováno v: Journal of Engineering for Gas Turbines and Power. 138

Flow and heat transfer in an aero-engine compressor disc cavity with radial inflow has been studied using computational fluid dynamics (CFD), large eddy simulation (LES) and coupled fluid/solid modelling. Standalone CFD investigations were conducted

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f31c7874ad680d2337d9b15194bb32ec
https://doi.org/10.1115/1.4031387

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Coupled Aero-Thermal Modeling of a Rotating Cavity With Radial Inflow

Autor: Zixiang Sun, Dario Amirante, John W. Chew, Nicholas J. Hills

Publikováno v: Volume 5C: Heat Transfer.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::60c7d179c346a88dd5f35cdde39c35eb
https://doi.org/10.1115/gt2015-42609

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Computational Analysis of 3-D Turbulent Flow Separation in a Vaneless Diffuser (Comparison between Numerical Analysis and Momentum Integral Method)

Autor: Masahiro Ishida, Zixiang Sun, Daisaku Sakaguchi, Hironobu Ueki

Publikováno v: TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B. 70:623-628

Three dimensional flow separation occurring in a vaneless diffuser at small flow rates was analyzed by using the numerical simulation with the low Reynolds-number turbulence model (LRN k-e) as well as the momentum integral method (MI). Comparison bet

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e56f031f8ab44de588d8ed074cd1cc70
https://doi.org/10.1299/kikaib.70.623

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Velocity pick-up and discharge coefficient for round orifices with cross flow at inlet

Autor: Debin Fu, John W. Chew, Zixiang Sun

This study investigates the flow through round orifices with cross flow at the inlet. Emphasis is placed on the change in tangential velocity component for orifices with low L/ D. A definition of velocity pick-up is developed based on the orifice exi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::865dabf82dac4cb74ba46fdec7ecbc4f
https://surrey.eprints-hosting.org/806627/

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Suppression of Rotating Stall in Vaneless Diffuser by Wall Roughness Control

Autor: Masahiro Ishida, Hironobu Ueki, Daisaku Sakaguchi, Zixiang Sun

Publikováno v: TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B. 66:2101-2108

The authors have proposed a new technique to suppress successfully the rotating stall in the vaneless diffuser. By positioning the completely rough wall between R=1.2 and 1.6 on the hub side diffuser wall alone, the flow rate of rotating stall incept

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::54900c87733abbb9f8ba4f31395f0fad
https://doi.org/10.1299/kikaib.66.648_2101

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