{"title":"气体和液体通过填料压盖泄漏的模型研究","authors":"Ali Salah Omar Aweimer, A. Bouzid","doi":"10.1115/1.4053830","DOIUrl":null,"url":null,"abstract":"\n The prediction of gas and liquid leak rates through packed glands is overlooked and the very few studies available in the literature focus on the packing axial stress distribution. For better prediction of leakage, the change of porosity with length due to this non-uniform axial stress must be accounted for. Our previous theoretical model on leakage predictions are based on uniform capillaries. In this paper, a new model that accounts for the change of the capillary diameter with the axial stress is developed for gaseous leak and a straight capillary model for liquid leaks are developed.\n The first slip flow condition is used to predict gas and liquid flow considering straight capillary model and a non-uniform capillary model the area of which dependents on the axial stress in the packing rings. An approach that uses an analytical-computational methodology based on the number and the size of pores obtained experimentally is adopted to predict gas and liquid leak rates in both the uniform and non-uniform compressed packed gland models. The Navier-Stokes equations associated with slip boundary condition at the wall are used to predict leakage. Experimental tests with helium, argon, nitrogen and air for gazes and water and kerosene for liquids are used to validate the models. The porosity parameters characterization is conducted experimentally with a reference gas namely helium at different gland stresses and pressures.","PeriodicalId":50080,"journal":{"name":"Journal of Pressure Vessel Technology-Transactions of the Asme","volume":null,"pages":null},"PeriodicalIF":1.0000,"publicationDate":"2022-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"On the Modeling of Gas and Liquid Leaks Through Packed Glands\",\"authors\":\"Ali Salah Omar Aweimer, A. Bouzid\",\"doi\":\"10.1115/1.4053830\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"\\n The prediction of gas and liquid leak rates through packed glands is overlooked and the very few studies available in the literature focus on the packing axial stress distribution. For better prediction of leakage, the change of porosity with length due to this non-uniform axial stress must be accounted for. Our previous theoretical model on leakage predictions are based on uniform capillaries. In this paper, a new model that accounts for the change of the capillary diameter with the axial stress is developed for gaseous leak and a straight capillary model for liquid leaks are developed.\\n The first slip flow condition is used to predict gas and liquid flow considering straight capillary model and a non-uniform capillary model the area of which dependents on the axial stress in the packing rings. An approach that uses an analytical-computational methodology based on the number and the size of pores obtained experimentally is adopted to predict gas and liquid leak rates in both the uniform and non-uniform compressed packed gland models. The Navier-Stokes equations associated with slip boundary condition at the wall are used to predict leakage. Experimental tests with helium, argon, nitrogen and air for gazes and water and kerosene for liquids are used to validate the models. The porosity parameters characterization is conducted experimentally with a reference gas namely helium at different gland stresses and pressures.\",\"PeriodicalId\":50080,\"journal\":{\"name\":\"Journal of Pressure Vessel Technology-Transactions of the Asme\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":1.0000,\"publicationDate\":\"2022-02-11\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Pressure Vessel Technology-Transactions of the Asme\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://doi.org/10.1115/1.4053830\",\"RegionNum\":4,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"ENGINEERING, MECHANICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Pressure Vessel Technology-Transactions of the Asme","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1115/1.4053830","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ENGINEERING, MECHANICAL","Score":null,"Total":0}
On the Modeling of Gas and Liquid Leaks Through Packed Glands
The prediction of gas and liquid leak rates through packed glands is overlooked and the very few studies available in the literature focus on the packing axial stress distribution. For better prediction of leakage, the change of porosity with length due to this non-uniform axial stress must be accounted for. Our previous theoretical model on leakage predictions are based on uniform capillaries. In this paper, a new model that accounts for the change of the capillary diameter with the axial stress is developed for gaseous leak and a straight capillary model for liquid leaks are developed.
The first slip flow condition is used to predict gas and liquid flow considering straight capillary model and a non-uniform capillary model the area of which dependents on the axial stress in the packing rings. An approach that uses an analytical-computational methodology based on the number and the size of pores obtained experimentally is adopted to predict gas and liquid leak rates in both the uniform and non-uniform compressed packed gland models. The Navier-Stokes equations associated with slip boundary condition at the wall are used to predict leakage. Experimental tests with helium, argon, nitrogen and air for gazes and water and kerosene for liquids are used to validate the models. The porosity parameters characterization is conducted experimentally with a reference gas namely helium at different gland stresses and pressures.
期刊介绍:
The Journal of Pressure Vessel Technology is the premier publication for the highest-quality research and interpretive reports on the design, analysis, materials, fabrication, construction, inspection, operation, and failure prevention of pressure vessels, piping, pipelines, power and heating boilers, heat exchangers, reaction vessels, pumps, valves, and other pressure and temperature-bearing components, as well as the nondestructive evaluation of critical components in mechanical engineering applications. Not only does the Journal cover all topics dealing with the design and analysis of pressure vessels, piping, and components, but it also contains discussions of their related codes and standards.
Applicable pressure technology areas of interest include: Dynamic and seismic analysis; Equipment qualification; Fabrication; Welding processes and integrity; Operation of vessels and piping; Fatigue and fracture prediction; Finite and boundary element methods; Fluid-structure interaction; High pressure engineering; Elevated temperature analysis and design; Inelastic analysis; Life extension; Lifeline earthquake engineering; PVP materials and their property databases; NDE; safety and reliability; Verification and qualification of software.