A new dynamic methodology for stationary and transient mass flow rate measurements
Rojas-Cadénas, Marcos and Silva, Ernane and Deschamps, César J. and Ho, Minh-Tuan and Graur, Irina (2017) A new dynamic methodology for stationary and transient mass flow rate measurements. In: 23ème Congrès Français de Mécanique (CFM2017), 2017-08-28 - 2017-09-01.
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Abstract
This paper reports the experimental and numerical analysis oftime-dependent rarefied gas flows through a long metallic micro-tube. The experimental methodology was conceived on the basis of the constant volume technique and adapted to measure the evolution with time ofa transient mass flow rate through a micro-tube. Furthermore, the characteristic time ofeach experiment, extracted from the pressure measu- rements in each reservoir, offered a clear indication on the dynamics ofthe transient flow as a function of its rarefaction level. Moreover we present an original methodology to extract stationary mass flow rates by using the tube conductance, which can be associated to the characteristic time of the experiment, measured for different mean pressures between two tanks. The measured conductance of the tube and the stationary mass flow rate at the inlet and outlet ofthe micro-tube was compared to numerical results obtained with the BGK linearized kinetic equation model. The results were obtained in a wide range of rarefaction conditions for nitrogen (N2).
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Item type: Conference or Workshop Item(Paper) ID code: 68727 Dates: DateEvent1 September 2017Published19 February 2017AcceptedSubjects: Technology > Mechanical engineering and machinery
Science > PhysicsDepartment: Faculty of Engineering > Mechanical and Aerospace Engineering Depositing user: Pure Administrator Date deposited: 04 Jul 2019 10:21 Last modified: 29 May 2024 00:35 Related URLs: URI: https://strathprints.strath.ac.uk/id/eprint/68727