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Two-dimensional computational modeling of high-speed transient flow in gun tunnel

In this work, an axisymmetric numerical model was developed to investigate the transient flow inside a 7-meter-long free piston gun tunnel. The numerical solution of the gun tunnel was carried out using the commercial solver Fluent. The governing equations of mass, momentum, and energy were discreti...

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Main Authors: Mohsen, A.M., Yusoff, M.Z., Hasini, H., Al-Falahi, A.
Format: Article
Language:English
Published: 2017
Online Access:http://dspace.uniten.edu.my/jspui/handle/123456789/6414
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spelling my.uniten.dspace-50432018-02-19T07:09:35Z Two-dimensional computational modeling of high-speed transient flow in gun tunnel Mohsen, A.M. Yusoff, M.Z. Hasini, H. Al-Falahi, A. In this work, an axisymmetric numerical model was developed to investigate the transient flow inside a 7-meter-long free piston gun tunnel. The numerical solution of the gun tunnel was carried out using the commercial solver Fluent. The governing equations of mass, momentum, and energy were discretized using the finite volume method. The dynamic zone of the piston was modeled as a rigid body, and its motion was coupled with the hydrodynamic forces from the flow solution based on the six-degree-of-freedom solver. A comparison of the numerical data with the theoretical calculations and experimental measurements of a ground-based gun tunnel facility showed good agreement. The effects of parameters such as working gases and initial pressure ratio on the test conditions in the facility were examined. The pressure ratio ranged from 10 to 50, and gas combinations of air–air, helium–air, air–nitrogen, and air–(Formula presented.) were used. The results showed that steady nozzle reservoir conditions can be maintained for a longer duration when the initial conditions across the diaphragm are adjusted. It was also found that the gas combination of helium–air yielded the highest shock wave strength and speed, but a longer test time was achieved in the test section when using the (Formula presented.) test gas. © 2017 Springer-Verlag GmbH Germany 2017-11-14T03:34:57Z 2017-11-14T03:34:57Z 2017 Article http://dspace.uniten.edu.my/jspui/handle/123456789/6414 10.1007/s00193-017-0758-0 en Centre for Advanced Computational Engineering, College of Engineering, Universiti Tenaga Nasional, Jalan IKRAM-UNITEN, Kajang, Selangor, Darul Ehsan, Malaysia
institution Universiti Tenaga Nasional
building UNITEN Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Tenaga Nasional
content_source UNITEN Institutional Repository
url_provider http://dspace.uniten.edu.my/
language English
description In this work, an axisymmetric numerical model was developed to investigate the transient flow inside a 7-meter-long free piston gun tunnel. The numerical solution of the gun tunnel was carried out using the commercial solver Fluent. The governing equations of mass, momentum, and energy were discretized using the finite volume method. The dynamic zone of the piston was modeled as a rigid body, and its motion was coupled with the hydrodynamic forces from the flow solution based on the six-degree-of-freedom solver. A comparison of the numerical data with the theoretical calculations and experimental measurements of a ground-based gun tunnel facility showed good agreement. The effects of parameters such as working gases and initial pressure ratio on the test conditions in the facility were examined. The pressure ratio ranged from 10 to 50, and gas combinations of air–air, helium–air, air–nitrogen, and air–(Formula presented.) were used. The results showed that steady nozzle reservoir conditions can be maintained for a longer duration when the initial conditions across the diaphragm are adjusted. It was also found that the gas combination of helium–air yielded the highest shock wave strength and speed, but a longer test time was achieved in the test section when using the (Formula presented.) test gas. © 2017 Springer-Verlag GmbH Germany
format Article
author Mohsen, A.M.
Yusoff, M.Z.
Hasini, H.
Al-Falahi, A.
spellingShingle Mohsen, A.M.
Yusoff, M.Z.
Hasini, H.
Al-Falahi, A.
Two-dimensional computational modeling of high-speed transient flow in gun tunnel
author_facet Mohsen, A.M.
Yusoff, M.Z.
Hasini, H.
Al-Falahi, A.
author_sort Mohsen, A.M.
title Two-dimensional computational modeling of high-speed transient flow in gun tunnel
title_short Two-dimensional computational modeling of high-speed transient flow in gun tunnel
title_full Two-dimensional computational modeling of high-speed transient flow in gun tunnel
title_fullStr Two-dimensional computational modeling of high-speed transient flow in gun tunnel
title_full_unstemmed Two-dimensional computational modeling of high-speed transient flow in gun tunnel
title_sort two-dimensional computational modeling of high-speed transient flow in gun tunnel
publishDate 2017
url http://dspace.uniten.edu.my/jspui/handle/123456789/6414
_version_ 1644493598727602176
score 13.211869

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