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A cfd simulation study on the effect of volume ratio on pressure piling

This paper presents the CFD simulation study on the effect of volume ratio on pressure piling. The explosion of flammable mixtures in interconnected compartments is commonly defined as “pressure piling” and its occurrence is a relevant issue of industrial safety. Pressure piling is a situation where...

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Main Author: Dhivya Lakshmi, Mohana Sundram
Format: Undergraduates Project Papers
Language:English
Published: 2014
Subjects:
QA Mathematics
Online Access:http://umpir.ump.edu.my/id/eprint/9186/1/12.A%20cfd%20simulation%20study%20on%20the%20effect%20of%20volume%20ratio%20on%20pressure%20piling.pdf
http://umpir.ump.edu.my/id/eprint/9186/
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spelling my.ump.umpir.91862023-02-23T07:38:06Z http://umpir.ump.edu.my/id/eprint/9186/ A cfd simulation study on the effect of volume ratio on pressure piling Dhivya Lakshmi, Mohana Sundram QA Mathematics This paper presents the CFD simulation study on the effect of volume ratio on pressure piling. The explosion of flammable mixtures in interconnected compartments is commonly defined as “pressure piling” and its occurrence is a relevant issue of industrial safety. Pressure piling is a situation where peak pressures much higher than the expected values predicted by thermodynamic are generated in the geometry. The geometric characteristics of the vessels such as the tube area and ratio of volumes of the interconnected vessels play important role in the intensity of the pressure piling. Moreover, pre-compression and violence of explosion are the two main mechanisms affecting pressure piling. A CFD-Ansys and RANS model were used in this paper. The models duplicated experimental explosion behaviours and the results were compared with experimental. Propane-air mixture was used to study pressure piling. In the end it was found that pre-compression and violence of explosion are the two main mechanisms affecting pressure piling, which in turns affect the ratio between reaction and venting time in the second vessel (Brt). Higher the Brt number in the second vessel, lower the occurrence of pressure piling. Lower the volume ratio, higher the violence of explosion. Increasing the volume ratio results in a more intense pre-compression (pressure in the secondary vessel at ignition time increases) thus suggesting that ignition in the second vessel occurs starting from a higher value of pressure. Therefore, low pre-compression and high Brt number can prevent the occurrence of pressure piling 2014-01 Undergraduates Project Papers NonPeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/9186/1/12.A%20cfd%20simulation%20study%20on%20the%20effect%20of%20volume%20ratio%20on%20pressure%20piling.pdf Dhivya Lakshmi, Mohana Sundram (2014) A cfd simulation study on the effect of volume ratio on pressure piling. Faculty of Chemical & Natural Resources Engineering, Universiti Malaysia Pahang.
institution Universiti Malaysia Pahang
building UMP Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Pahang
content_source UMP Institutional Repository
url_provider http://umpir.ump.edu.my/
language English
topic QA Mathematics
spellingShingle QA Mathematics
Dhivya Lakshmi, Mohana Sundram
A cfd simulation study on the effect of volume ratio on pressure piling
description This paper presents the CFD simulation study on the effect of volume ratio on pressure piling. The explosion of flammable mixtures in interconnected compartments is commonly defined as “pressure piling” and its occurrence is a relevant issue of industrial safety. Pressure piling is a situation where peak pressures much higher than the expected values predicted by thermodynamic are generated in the geometry. The geometric characteristics of the vessels such as the tube area and ratio of volumes of the interconnected vessels play important role in the intensity of the pressure piling. Moreover, pre-compression and violence of explosion are the two main mechanisms affecting pressure piling. A CFD-Ansys and RANS model were used in this paper. The models duplicated experimental explosion behaviours and the results were compared with experimental. Propane-air mixture was used to study pressure piling. In the end it was found that pre-compression and violence of explosion are the two main mechanisms affecting pressure piling, which in turns affect the ratio between reaction and venting time in the second vessel (Brt). Higher the Brt number in the second vessel, lower the occurrence of pressure piling. Lower the volume ratio, higher the violence of explosion. Increasing the volume ratio results in a more intense pre-compression (pressure in the secondary vessel at ignition time increases) thus suggesting that ignition in the second vessel occurs starting from a higher value of pressure. Therefore, low pre-compression and high Brt number can prevent the occurrence of pressure piling
format Undergraduates Project Papers
author Dhivya Lakshmi, Mohana Sundram
author_facet Dhivya Lakshmi, Mohana Sundram
author_sort Dhivya Lakshmi, Mohana Sundram
title A cfd simulation study on the effect of volume ratio on pressure piling
title_short A cfd simulation study on the effect of volume ratio on pressure piling
title_full A cfd simulation study on the effect of volume ratio on pressure piling
title_fullStr A cfd simulation study on the effect of volume ratio on pressure piling
title_full_unstemmed A cfd simulation study on the effect of volume ratio on pressure piling
title_sort cfd simulation study on the effect of volume ratio on pressure piling
publishDate 2014
url http://umpir.ump.edu.my/id/eprint/9186/1/12.A%20cfd%20simulation%20study%20on%20the%20effect%20of%20volume%20ratio%20on%20pressure%20piling.pdf
http://umpir.ump.edu.my/id/eprint/9186/
_version_ 1758950530571304960
score 13.211869

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