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Title: On the possibility to develop an advanced non-equilibrium model of depressurisation in two-phase fluids
Authors: Duc, Linh Do
Horák, Vladimír
Kulish, Vladimir
Lukáč, Tomáš
Keywords: Carbon dioxide
Vapor pressure
Issue Date: 2017
Source: Duc, L. D., Horák, V., Kulish, V., & Lukáč, T. (2017). On the possibility to develop an advanced non-equilibrium model of depressurisation in two-phase fluids. AIP Conference Proceedings, 1798(1), 020047-.
Conference: AIP Conference Proceedings
Abstract: Carbon dioxide is widely used as the power gas in the gas guns community due to its ease of handling, storability at room temperature, and high vapor pressure depending only upon temperature, but not a tank size, as long as some liquid carbon dioxide remains in the tank. This high vapor pressure can be used as the pressurant, making it what is referred to as a self-pressurising propellant. However, as a two-phase substance, carbon dioxide does have its drawbacks: (1) vaporization of liquefied CO2 inside a tank when shooting rapidly or a lot causes the tank to get cool, resulting in pressure fluctuations that makes the gun’s performance and accuracy worse, (2) solid carbon dioxide that is also known as dry ice can appear on the output valve of the tank while shooting and it can cause damage or slow the gun’s performance down, if it works its way into some control components, including the barrel of the gun. Hence, it is crucial to obtain a scientific understanding of carbon dioxide behavior and further the discharge characteristics of a wide range of pressure-tank configurations. For the purpose of satisfying this goal, a comprehensive discharge mathematical model for carbon dioxide tank dynamics is required. In this paper, the possibility to develop an advanced non-equilibrium model of depressurization in two-phase fluids is discussed.
DOI: 10.1063/1.4972639
Schools: School of Mechanical and Aerospace Engineering 
Rights: © 2017 American Institute of Physics (AIP). This paper was published in AIP Conference Proceedings and is made available as an electronic reprint (preprint) with permission of American Institute of Physics (AIP). The published version is available at: []. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.
Fulltext Permission: open
Fulltext Availability: With Fulltext
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