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Porosity effect of the silver catalyst in hydrogen peroxide monopropellant thruster

In monopropellant system, hydrogen peroxide is used with catalyst to create an exothermic reaction. Catalyst made of silver among the popular choice for this application. Since the catalyst used is in porous state, the effect of its porosity in the hydrogen peroxide monopropellant thruster performan...

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Main Authors:	Shahrin, Muhammad Shahrul Nizam, Othman, Norazila, Nik Mohd., Nik Ahmad Ridhwan, Ab. Wahid, Mastura, Md. Zain, Mohd. Zarhamdy
Format:	Article
Language:	English
Published:	Penerbit Akademia Baru 2021
Subjects:	TJ Mechanical engineering and machinery
Online Access:	http://eprints.utm.my/id/eprint/96352/1/NikAhmadRidhwan2021_PorosityEffectoftheSilverCatalystinHydrogenPeroxide.pdf http://eprints.utm.my/id/eprint/96352/ http://dx.doi.org/10.37934/cfdl.13.12.120
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spelling	my.utm.963522022-07-17T08:40:50Z http://eprints.utm.my/id/eprint/96352/ Porosity effect of the silver catalyst in hydrogen peroxide monopropellant thruster Shahrin, Muhammad Shahrul Nizam Othman, Norazila Nik Mohd., Nik Ahmad Ridhwan Ab. Wahid, Mastura Md. Zain, Mohd. Zarhamdy TJ Mechanical engineering and machinery In monopropellant system, hydrogen peroxide is used with catalyst to create an exothermic reaction. Catalyst made of silver among the popular choice for this application. Since the catalyst used is in porous state, the effect of its porosity in the hydrogen peroxide monopropellant thruster performances is yet unknown. The porosity changes depending on factors including catalyst pact compaction pressure, bed dimension, and type of catalyst used. As researches on this topic is relatively small, the optimum porosity value is usually left out. The performance of the thruster indicated by the pressure drop across the catalyst bed. Porosity of the catalyst bed adds additional momentum sink to the momentum equation that contributes to the pressure gradient which lead to pressure loss inside thruster. The effect of porosity influences the performance and precision of the thruster. Study of the pressure drop by the catalyst bed requires a lengthy period and expensive experiments, however, numerical simulation by mean of Computational Fluid Dynamics (CFD) can be an alternative. In this paper, 90 wt% hydrogen peroxide solution with silver catalyst is studied in order to investigate the influence of porosity to the performances of the thruster, and to find the optimum porosity of the thruster. Species transport model is applied in the single-phase reaction simulation using the EDM for turbulence-chemistry interaction. Through this study, the effect of porosity towards the thruster performances represented in term of pressure drop, exit velocity, bed temperature, and thrust, and porosity of 0.4 found to be as an optimal value. Penerbit Akademia Baru 2021 Article PeerReviewed application/pdf en http://eprints.utm.my/id/eprint/96352/1/NikAhmadRidhwan2021_PorosityEffectoftheSilverCatalystinHydrogenPeroxide.pdf Shahrin, Muhammad Shahrul Nizam and Othman, Norazila and Nik Mohd., Nik Ahmad Ridhwan and Ab. Wahid, Mastura and Md. Zain, Mohd. Zarhamdy (2021) Porosity effect of the silver catalyst in hydrogen peroxide monopropellant thruster. CFD Letters, 13 (12). pp. 1-20. ISSN 2180-1363 http://dx.doi.org/10.37934/cfdl.13.12.120
institution	Universiti Teknologi Malaysia
building	UTM Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Teknologi Malaysia
content_source	UTM Institutional Repository
url_provider	http://eprints.utm.my/
language	English
topic	TJ Mechanical engineering and machinery
spellingShingle	TJ Mechanical engineering and machinery Shahrin, Muhammad Shahrul Nizam Othman, Norazila Nik Mohd., Nik Ahmad Ridhwan Ab. Wahid, Mastura Md. Zain, Mohd. Zarhamdy Porosity effect of the silver catalyst in hydrogen peroxide monopropellant thruster
description	In monopropellant system, hydrogen peroxide is used with catalyst to create an exothermic reaction. Catalyst made of silver among the popular choice for this application. Since the catalyst used is in porous state, the effect of its porosity in the hydrogen peroxide monopropellant thruster performances is yet unknown. The porosity changes depending on factors including catalyst pact compaction pressure, bed dimension, and type of catalyst used. As researches on this topic is relatively small, the optimum porosity value is usually left out. The performance of the thruster indicated by the pressure drop across the catalyst bed. Porosity of the catalyst bed adds additional momentum sink to the momentum equation that contributes to the pressure gradient which lead to pressure loss inside thruster. The effect of porosity influences the performance and precision of the thruster. Study of the pressure drop by the catalyst bed requires a lengthy period and expensive experiments, however, numerical simulation by mean of Computational Fluid Dynamics (CFD) can be an alternative. In this paper, 90 wt% hydrogen peroxide solution with silver catalyst is studied in order to investigate the influence of porosity to the performances of the thruster, and to find the optimum porosity of the thruster. Species transport model is applied in the single-phase reaction simulation using the EDM for turbulence-chemistry interaction. Through this study, the effect of porosity towards the thruster performances represented in term of pressure drop, exit velocity, bed temperature, and thrust, and porosity of 0.4 found to be as an optimal value.
format	Article
author	Shahrin, Muhammad Shahrul Nizam Othman, Norazila Nik Mohd., Nik Ahmad Ridhwan Ab. Wahid, Mastura Md. Zain, Mohd. Zarhamdy
author_facet	Shahrin, Muhammad Shahrul Nizam Othman, Norazila Nik Mohd., Nik Ahmad Ridhwan Ab. Wahid, Mastura Md. Zain, Mohd. Zarhamdy
author_sort	Shahrin, Muhammad Shahrul Nizam
title	Porosity effect of the silver catalyst in hydrogen peroxide monopropellant thruster
title_short	Porosity effect of the silver catalyst in hydrogen peroxide monopropellant thruster
title_full	Porosity effect of the silver catalyst in hydrogen peroxide monopropellant thruster
title_fullStr	Porosity effect of the silver catalyst in hydrogen peroxide monopropellant thruster
title_full_unstemmed	Porosity effect of the silver catalyst in hydrogen peroxide monopropellant thruster
title_sort	porosity effect of the silver catalyst in hydrogen peroxide monopropellant thruster
publisher	Penerbit Akademia Baru
publishDate	2021
url	http://eprints.utm.my/id/eprint/96352/1/NikAhmadRidhwan2021_PorosityEffectoftheSilverCatalystinHydrogenPeroxide.pdf http://eprints.utm.my/id/eprint/96352/ http://dx.doi.org/10.37934/cfdl.13.12.120
_version_	1739828067327541248
score	13.251813

Porosity effect of the silver catalyst in hydrogen peroxide monopropellant thruster

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