Impacts of molecular characteristics on induced Knudsen force in the micro gas sensor

Iman Shiryanpoor, Peiman Valipour, M. Barzegar Gerdroodbary, Mohamadmahdi Shahbazi and Amir Musa Abazari
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Iman Shiryanpoor: Computer Aided Process Engineering (CAPE) Laboratory, Faculty of Chemical Engineering, Iran University of Science & Technology, Tehran, Iran
Peiman Valipour: ��Department of Textile and Apparel Engineering, Qaemshahr Branch, Islamic Azad University, Qaemshahr, Iran
M. Barzegar Gerdroodbary: ��Department of Electromechanical Engineering, C-MAST-Center for Mechanical and Aerospace Science and Technology, Universidade da Beira Interior, Covilha, Portugal
Mohamadmahdi Shahbazi: �Department of Electrical Engineering, Faculty of Engineering, Bu-Ali Sina University, Hamedan, Iran
Amir Musa Abazari: �Department of Mechanical Engineering, Faculty of Engineering, Urmia University, Urmia, Iran

International Journal of Modern Physics C (IJMPC), 2024, vol. 35, issue 10, 1-13

Abstract: The development of the micro-gas sensor for the pressure measurement of the different gas species in the low-pressure domain is an important phenomenon. This paper has investigated the importance of molecular characteristics of the eight different gas species in various pressure domains. Impacts of molecular weight, molecular diameter and viscosity of the selected eight gas species on the induced Knudsen force have been analyzed. This study has employed Direct simulation Monte Carlo (DSMC) results of simulations of the micro-gas sensors for the evaluation of the micro-sensor performance in different gas species. Our investigation shows that the influence of molecular diameter change in the high-pressure domain would result in higher significant Knudsen force change. Knudsen force is also reduced when the value of the gas viscosity is increased.

Keywords: Knudsen force; micro-gas sensor; DSMC; molecular characteristics; low-pressure gas (search for similar items in EconPapers)
Date: 2024
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DOI: 10.1142/S0129183124501286

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