A study of vortex ring generation by a circular disc

Research output: Contribution to conferencePoster

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Abstract

A vortex ring is a region where the fluid mostly spins around an imaginary axis line that forms a closed loop. It is a fundamental phenomenon for the fluid passing by an object. In general, there are two methods associated with the axisymmetric vortex generation: fluid discharge from an orifice or a nozzle, and disc start-up instantly. Recent study by Yang (2012) showed that the different mechanisms of vortex generation could lead to a similar formation process and a universal principle of the optimal vortex formation could exist.
Present work is mainly based on a numerical simulation study of disc vortex ring formation. A commercial Computational Fluid Dynamics solver is employed to carry out the simulation. The simulation parameters are selected the same as those of Yang’s (2012) experimental study. The model is built with fluid passing by a 30mm diameter and 2mm thickness disc in a large computational domain. The simulation results are validated with experimental data. By studying the Iso-surface, representative values, i.e. size of both vortex ring and vortex ring core, circulation and kinetic energy during the formation phases of the vortex ring are investigated. Comparison and analyses between the numerical simulation and the experimental data will be given in detail.
Original languageEnglish
Pages1
Number of pages1
Publication statusPublished - 2014
EventUniversity of Strathclyde Research Presentation Day - University of Strathclyde, Glasgow, United Kingdom
Duration: 21 Aug 2014 → …
Conference number: 2014

Exhibition

ExhibitionUniversity of Strathclyde Research Presentation Day
Abbreviated titleRPD
CountryUnited Kingdom
CityGlasgow
Period21/08/14 → …

Fingerprint

Vortex flow
Fluids
Computer simulation
Orifices
Kinetic energy
Discharge (fluid mechanics)
Nozzles
Computational fluid dynamics

Keywords

  • vortex ring generation
  • pressure-velocity coupling
  • Rankine vortex theory

Cite this

Li, R., Jia, L., & Xiao, Q. (2014). A study of vortex ring generation by a circular disc. 1. Poster session presented at University of Strathclyde Research Presentation Day, Glasgow, United Kingdom.
Li, Ruo-xin ; Jia, Lai-bing ; Xiao, Qing. / A study of vortex ring generation by a circular disc. Poster session presented at University of Strathclyde Research Presentation Day, Glasgow, United Kingdom.1 p.
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title = "A study of vortex ring generation by a circular disc",
abstract = "A vortex ring is a region where the fluid mostly spins around an imaginary axis line that forms a closed loop. It is a fundamental phenomenon for the fluid passing by an object. In general, there are two methods associated with the axisymmetric vortex generation: fluid discharge from an orifice or a nozzle, and disc start-up instantly. Recent study by Yang (2012) showed that the different mechanisms of vortex generation could lead to a similar formation process and a universal principle of the optimal vortex formation could exist. Present work is mainly based on a numerical simulation study of disc vortex ring formation. A commercial Computational Fluid Dynamics solver is employed to carry out the simulation. The simulation parameters are selected the same as those of Yang’s (2012) experimental study. The model is built with fluid passing by a 30mm diameter and 2mm thickness disc in a large computational domain. The simulation results are validated with experimental data. By studying the Iso-surface, representative values, i.e. size of both vortex ring and vortex ring core, circulation and kinetic energy during the formation phases of the vortex ring are investigated. Comparison and analyses between the numerical simulation and the experimental data will be given in detail.",
keywords = "vortex ring generation, pressure-velocity coupling, Rankine vortex theory",
author = "Ruo-xin Li and Lai-bing Jia and Qing Xiao",
year = "2014",
language = "English",
pages = "1",
note = "University of Strathclyde Research Presentation Day, RPD ; Conference date: 21-08-2014",

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Li, R, Jia, L & Xiao, Q 2014, 'A study of vortex ring generation by a circular disc' University of Strathclyde Research Presentation Day, Glasgow, United Kingdom, 21/08/14, pp. 1.

A study of vortex ring generation by a circular disc. / Li, Ruo-xin; Jia, Lai-bing; Xiao, Qing.

2014. 1 Poster session presented at University of Strathclyde Research Presentation Day, Glasgow, United Kingdom.

Research output: Contribution to conferencePoster

TY - CONF

T1 - A study of vortex ring generation by a circular disc

AU - Li, Ruo-xin

AU - Jia, Lai-bing

AU - Xiao, Qing

PY - 2014

Y1 - 2014

N2 - A vortex ring is a region where the fluid mostly spins around an imaginary axis line that forms a closed loop. It is a fundamental phenomenon for the fluid passing by an object. In general, there are two methods associated with the axisymmetric vortex generation: fluid discharge from an orifice or a nozzle, and disc start-up instantly. Recent study by Yang (2012) showed that the different mechanisms of vortex generation could lead to a similar formation process and a universal principle of the optimal vortex formation could exist. Present work is mainly based on a numerical simulation study of disc vortex ring formation. A commercial Computational Fluid Dynamics solver is employed to carry out the simulation. The simulation parameters are selected the same as those of Yang’s (2012) experimental study. The model is built with fluid passing by a 30mm diameter and 2mm thickness disc in a large computational domain. The simulation results are validated with experimental data. By studying the Iso-surface, representative values, i.e. size of both vortex ring and vortex ring core, circulation and kinetic energy during the formation phases of the vortex ring are investigated. Comparison and analyses between the numerical simulation and the experimental data will be given in detail.

AB - A vortex ring is a region where the fluid mostly spins around an imaginary axis line that forms a closed loop. It is a fundamental phenomenon for the fluid passing by an object. In general, there are two methods associated with the axisymmetric vortex generation: fluid discharge from an orifice or a nozzle, and disc start-up instantly. Recent study by Yang (2012) showed that the different mechanisms of vortex generation could lead to a similar formation process and a universal principle of the optimal vortex formation could exist. Present work is mainly based on a numerical simulation study of disc vortex ring formation. A commercial Computational Fluid Dynamics solver is employed to carry out the simulation. The simulation parameters are selected the same as those of Yang’s (2012) experimental study. The model is built with fluid passing by a 30mm diameter and 2mm thickness disc in a large computational domain. The simulation results are validated with experimental data. By studying the Iso-surface, representative values, i.e. size of both vortex ring and vortex ring core, circulation and kinetic energy during the formation phases of the vortex ring are investigated. Comparison and analyses between the numerical simulation and the experimental data will be given in detail.

KW - vortex ring generation

KW - pressure-velocity coupling

KW - Rankine vortex theory

M3 - Poster

SP - 1

ER -

Li R, Jia L, Xiao Q. A study of vortex ring generation by a circular disc. 2014. Poster session presented at University of Strathclyde Research Presentation Day, Glasgow, United Kingdom.