Journal ArticleDOI
Compressible swirling flow through convergent-divergent nozzles
C. J. Boerner,Ephraim M Sparrow,C.J. Scott +2 more
- Vol. 5, Iss: 2, pp 101-115
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TLDR
In this paper, the effects of swirl on the rate of mass flow and on the velocity field in the throat region of axi-symmetric nozzles are studied analytically and experimentally.Abstract:
The effects of swirl on the rate of mass flow and on the velocity field in the throat region of axi-symmetric nozzles are studied analytically and experimentally. In the analytical phase, methods are developed for treating either the direct or the inverse problem for flow in de Lavai and annular nozzles, taking account of either weak or strong swirl. The experiments were performed in an annular nozzle, with swirl being imparted to the flow by adjustable vanes situated upstream of the test section.read more
Citations
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Journal ArticleDOI
Supersonic separation technology for natural gas processing: A review
Xuewen Cao,Jiang Bian +1 more
TL;DR: In this article, the authors reviewed the research advances in condensation characteristics of the Laval nozzle and separation mechanism of the supersonic separator in detail from the perspectives of theoretical analysis, experiments and numerical simulation, and summarized the new application of this technology including natural gas liquefaction and removal of the acid gases.
Journal ArticleDOI
Numerical simulation of natural gas flows in diffusers for supersonic separators
TL;DR: In this paper, the natural gas flows in diffusers were numerically calculated using the navier-stokes equations with the RSM (reynolds stress model) and the behavior of gas dynamic parameters was analyzed under conditions of shock waves and boundary layers.
Journal ArticleDOI
Computational Fluid Dynamics Study for Flow of Natural Gas through High-pressure Supersonic Nozzles: Part 2. Nozzle Geometry and Vorticity
TL;DR: In this article, the authors used the computational fluid dynamics technique to study the behavior of high-pressure natural gas when it flows through nozzles with supersonic velocities.
Journal ArticleDOI
Supersonic swirling characteristics of natural gas in convergent-divergent nozzles
TL;DR: The supersonic nozzle is a new apparatus which can be used to condense and separate water and heavy hydrocarbons from natural gas as mentioned in this paper, and it has been shown that it can be well separated when the divergent angle takes values from 4° to 12° in the convergent-divergent nozzle.
Journal ArticleDOI
Swirling flow of natural gas in supersonic separators
Chuang Wen,Xuewen Cao,Yan Yang +2 more
TL;DR: In this paper, a new supersonic swirling separator was designed for the numerical calculation, in which a central body was inserted based on the principle of conservation of angular momentum, and axial and radial distribution of the main parameters of natural gas flow was investigated with RNG K-ɛ turbulence model.
References
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Journal ArticleDOI
The structure of concentrated vortex cores
TL;DR: A review of recent work on the structure of vortex cores is given in this paper, with a discussion of the equations of motion and appropriate boundary conditions, and a description in general terms of the vigorous but highly responsive character of the flow, of the effects of compressibility and turbulence and of the phenomenon of energy separation.
Journal ArticleDOI
Effect of small radius of curvature on transonic flow in axisymmetric nozzles.
D. E. Hill,D. F. Hopkins +1 more
TL;DR: In this article, an analysis of the transonic flow in axisymmetric nozzles having wall radii between one-quarter and three times the throat radius was made, based on Friedrichs' equations, by which the flowfield is developed for a prescribed velocity distribution along the nozzle axis.
Journal ArticleDOI
Transonic swirling flow.
TL;DR: In this article, an approximation that can be used to determine how swirl affects the choking constraint on flow through the throat of a nozzle is obtained, consistent with an experimentally observed flow pattern that contains a recirculating internal cell upstream of the throat.