THE PRESSURE PEAKING PHENOMENON: VALIDATION FOR UNIGNITED RELEASES IN LABORATORY-SCALE ENCLOSURE

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This study is aimed at the validation of the pressure peaking phenomenon against laboratory-scale experiments. The phenomenon was discovered recently as a result of analytical and numerical studies performed at Ulster University. The phenomenon is characterized by the existence of a peak on the overpressure transient in an enclosure with vent(s) at some conditions. The peak overpressure can significantly exceed the steady-state pressure and jeopardise a civil structure integrity causing serious life safety and property protection problems. However, the experimental validation of the phenomenon was absent until recently. The validation experiments were performed at Karlsruhe Institute of Technology within the framework of the HyIndoor project (www.hyindoor.eu). Tests were carried out with release of three different gases (air, helium, and hydrogen) within a laboratory-scale enclosure of about 1 m3 volume with a vent of comparatively small size. The model of pressure peaking phenomenon reproduced closely the experimental pressure dynamics within the enclosure for all three used gases. The prediction of pressure peaking phenomenon consists of two steps which are explained in detail. Examples of calculation for typical hydrogen applications are presented.
LanguageEnglish
Title of host publicationUnknown Host Publication
Number of pages10
Publication statusAccepted/In press - 19 Oct 2015
EventInternational Conference on Hydrogen Safety - Yokohama, Japan
Duration: 19 Oct 2015 → …

Conference

ConferenceInternational Conference on Hydrogen Safety
Period19/10/15 → …

Fingerprint

Enclosures
Vents
Hydrogen
Gases
Helium
Experiments
Air

Keywords

  • Hydrogen
  • unignited release
  • pressure peaking phenomenon
  • model
  • ventilation
  • experiments
  • validation

Cite this

@inproceedings{72e0b1a4b0604ccc9603874dff496846,
title = "THE PRESSURE PEAKING PHENOMENON: VALIDATION FOR UNIGNITED RELEASES IN LABORATORY-SCALE ENCLOSURE",
abstract = "This study is aimed at the validation of the pressure peaking phenomenon against laboratory-scale experiments. The phenomenon was discovered recently as a result of analytical and numerical studies performed at Ulster University. The phenomenon is characterized by the existence of a peak on the overpressure transient in an enclosure with vent(s) at some conditions. The peak overpressure can significantly exceed the steady-state pressure and jeopardise a civil structure integrity causing serious life safety and property protection problems. However, the experimental validation of the phenomenon was absent until recently. The validation experiments were performed at Karlsruhe Institute of Technology within the framework of the HyIndoor project (www.hyindoor.eu). Tests were carried out with release of three different gases (air, helium, and hydrogen) within a laboratory-scale enclosure of about 1 m3 volume with a vent of comparatively small size. The model of pressure peaking phenomenon reproduced closely the experimental pressure dynamics within the enclosure for all three used gases. The prediction of pressure peaking phenomenon consists of two steps which are explained in detail. Examples of calculation for typical hydrogen applications are presented.",
keywords = "Hydrogen, unignited release, pressure peaking phenomenon, model, ventilation, experiments, validation",
author = "Volodymyr Shentsov and Mike Kuznetsov and Vladimir Molkov",
year = "2015",
month = "10",
day = "19",
language = "English",
booktitle = "Unknown Host Publication",

}

Shentsov, V, Kuznetsov, M & Molkov, V 2015, THE PRESSURE PEAKING PHENOMENON: VALIDATION FOR UNIGNITED RELEASES IN LABORATORY-SCALE ENCLOSURE. in Unknown Host Publication. International Conference on Hydrogen Safety, 19/10/15.

THE PRESSURE PEAKING PHENOMENON: VALIDATION FOR UNIGNITED RELEASES IN LABORATORY-SCALE ENCLOSURE. / Shentsov, Volodymyr; Kuznetsov, Mike; Molkov, Vladimir.

Unknown Host Publication. 2015.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

TY - GEN

T1 - THE PRESSURE PEAKING PHENOMENON: VALIDATION FOR UNIGNITED RELEASES IN LABORATORY-SCALE ENCLOSURE

AU - Shentsov, Volodymyr

AU - Kuznetsov, Mike

AU - Molkov, Vladimir

PY - 2015/10/19

Y1 - 2015/10/19

N2 - This study is aimed at the validation of the pressure peaking phenomenon against laboratory-scale experiments. The phenomenon was discovered recently as a result of analytical and numerical studies performed at Ulster University. The phenomenon is characterized by the existence of a peak on the overpressure transient in an enclosure with vent(s) at some conditions. The peak overpressure can significantly exceed the steady-state pressure and jeopardise a civil structure integrity causing serious life safety and property protection problems. However, the experimental validation of the phenomenon was absent until recently. The validation experiments were performed at Karlsruhe Institute of Technology within the framework of the HyIndoor project (www.hyindoor.eu). Tests were carried out with release of three different gases (air, helium, and hydrogen) within a laboratory-scale enclosure of about 1 m3 volume with a vent of comparatively small size. The model of pressure peaking phenomenon reproduced closely the experimental pressure dynamics within the enclosure for all three used gases. The prediction of pressure peaking phenomenon consists of two steps which are explained in detail. Examples of calculation for typical hydrogen applications are presented.

AB - This study is aimed at the validation of the pressure peaking phenomenon against laboratory-scale experiments. The phenomenon was discovered recently as a result of analytical and numerical studies performed at Ulster University. The phenomenon is characterized by the existence of a peak on the overpressure transient in an enclosure with vent(s) at some conditions. The peak overpressure can significantly exceed the steady-state pressure and jeopardise a civil structure integrity causing serious life safety and property protection problems. However, the experimental validation of the phenomenon was absent until recently. The validation experiments were performed at Karlsruhe Institute of Technology within the framework of the HyIndoor project (www.hyindoor.eu). Tests were carried out with release of three different gases (air, helium, and hydrogen) within a laboratory-scale enclosure of about 1 m3 volume with a vent of comparatively small size. The model of pressure peaking phenomenon reproduced closely the experimental pressure dynamics within the enclosure for all three used gases. The prediction of pressure peaking phenomenon consists of two steps which are explained in detail. Examples of calculation for typical hydrogen applications are presented.

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KW - pressure peaking phenomenon

KW - model

KW - ventilation

KW - experiments

KW - validation

M3 - Conference contribution

BT - Unknown Host Publication

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