Journal ArticleDOI
Flow field analysis of high-speed helium turboexpander for cryogenic refrigeration and liquefaction cycles
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TLDR
In this paper, a three-dimensional transient flow analysis of a turboexpander for helium refrigeration and liquefaction cycles was performed using Ansys CFX®, to understand the flow field of a high-speed helium turboexpanders, which in turn will help in taking appropriate decisions regarding modifications of established design methodology for improved efficiency of these machines.About:
This article is published in Cryogenics.The article was published on 2017-03-01. It has received 17 citations till now. The article focuses on the topics: Turboexpander & Nozzle.read more
Citations
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Journal ArticleDOI
Design and dynamic behaviour investigation of a novel VOC recovery system based on a deep condensation process
Xin Li,Jie Ma,Xiang Ling +2 more
TL;DR: In this paper, a novel VOC deep condensation recovery system (VOC-DCR system) is designed to overcome the shortcomings of the traditional condensation-based system, and its steady-state simulation shows that the VOC recovery rate is 99.97% and the energy consumption is 35.67 kW.
Journal ArticleDOI
Preliminary design and performance analysis of a radial inflow turbine for a large-scale helium cryogenic system
TL;DR: In this paper, a high speed radial micro turbine with the splitter blade was designed for a 40 L/h helium liquefier with the Claude cycle, and the turbine is designed for inlet and outlet temperatures of 14.4 and 9.4
Journal ArticleDOI
Effect of rotation on the flow behaviour in a high-speed cryogenic microturbine used in helium applications.
TL;DR: In this paper, three-dimensional unsteady flow analysis of a high speed microturbine used in helium applications was carried out using Ansys CFX® and the loss generated by the various secondary and vortical flows for the different cases was quantified in terms of entropy loss coefficient.
Journal ArticleDOI
A methodology for the performance prediction: flow field and thermal analysis of a helium turboexpander
TL;DR: In this article, the authors demonstrate the sensitivity analysis and optimal range of non-dimensional design variables on which the radial inflow turbine has maximum efficiency, minimum losses, and maximum power output using artificial intelligence techniques.
Journal ArticleDOI
Performance analysis of high-speed cryogenic turbo-expander at cooling process based on numerical and experimental study
TL;DR: It was concluded that the direct use of the Hepak database for the real gas properties in the CFD solver improve the prediction of the thermodynamic properties and so the performance of the turbo-expander.
References
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Journal ArticleDOI
The 1993 IGTI Scholar Lecture: Loss Mechanisms in Turbomachines
TL;DR: The origins and effects of loss in turbomachines are discussed in this article with the emphasis on trying to understand the physical origins of loss rather than on reviewing the available prediction methods.
Journal ArticleDOI
Chamber Dimension Effects on Induced Flow and Frictional Resistance of Enclosed Rotating Disks
J. W. Daily,R. E. Nece +1 more
Journal ArticleDOI
Review of the shear-stress transport turbulence model experience from an industrial perspective
TL;DR: The role of the concepts behind the SST model in current and future CFD simulations of engineering flows is outlined and the overall turbulence modelling strategy for ANSYS computational fluid dynamics (CFD) is outlined.
Book
Design of radial turbomachines
A. Whitfield,Nicholas C. Baines +1 more
TL;DR: In this article, the authors present a detailed history and applications of the centrifugal compressor and the radial turbine rotor passage, as well as the stator exhaust diffuser, and a generalised computer-based one-dimensional performance prediction.
Journal ArticleDOI
Characterization of a radial turbocharger turbine in pulsating flow by means of CFD and its application to engine modeling
TL;DR: In this article, the effect of pulsating flow in a variable geometry radial inflow turbine was analyzed under isentropic pulses, which are similar to those created by a rotating disk in a turbocharger test rig.
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