کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
11003632 1461461 2018 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Alternative models and numerical simulations of rarefied gas flow in vacuum systems
ترجمه فارسی عنوان
مدل های جایگزین و شبیه سازی عددی جریان گاز رضایت بخش در سیستم های خلاء
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی کنترل و سیستم های مهندسی
چکیده انگلیسی
An analytical and a numerical studies of rarefied gas effects on the flow through a vacuum pipe and a rectangular microchannel at low operating pressure are performed by the use of both existing continuum and kinetic approaches. The pipe and the channel operates in a high-Knudsen-, low-Reynolds- numbers regime where the viscous effects as well as the rarefied gas effects dominate the flow. Since only the isothermal flow is focused, the slip-flow at the wall is the main anomaly. The paper shows the implementation of both approaches to predict a rarefied gas flow through a leak artefact. The results from various existing models are compared with the experimental results of a flow through leak artefacts, which were performed by recognized national metrology institutes (NMIs). Pros, cons and the limitation of each approach are pointed out.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Measurement - Volume 126, October 2018, Pages 417-420
نویسندگان
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