Pumping effect due to temperature gradients imposed in a multistage assembly consisting of long tapered orthogonal channels
| Autor: | López Quesada, Guillermo, Tatsios, Giorgos, Rojas-Cárdenas, Marcos, Baldas, Lucien, Barrot, Christine, Colin, Stéphane, Valougeorgis, Dimitris |
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| Přispěvatelé: | Institut Clément Ader (ICA), Institut Supérieur de l'Aéronautique et de l'Espace (ISAE-SUPAERO)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-IMT École nationale supérieure des Mines d'Albi-Carmaux (IMT Mines Albi), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT), University of Thessaly [Volos] (UTH), European Project: 643095,H2020,H2020-MSCA-ITN-2014,MIGRATE(2015), Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-IMT École nationale supérieure des Mines d'Albi-Carmaux (IMT Mines Albi), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-Institut Supérieur de l'Aéronautique et de l'Espace (ISAE-SUPAERO) |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: | |
| Zdroj: | 5th European Conference on Microfluidics (μFlu18) and 3rd European Conference on Non-Equilibrium Gas Flows (NEGF18) 5th European Conference on Microfluidics (μFlu18) and 3rd European Conference on Non-Equilibrium Gas Flows (NEGF18), Feb 2018, Strasbourg, France. pp.447-450 |
| Popis: | International audience; The temperature driven rarefied gas flow and the associated pressure difference in a multistage assembly consisting of a series of channels with linearly diverging or converging rectangular cross sections are computationally investigated. Each stage of the multistage assembly is consisting of one converging and one diverging channel. The net mass flow rate and the induced pressure difference between the inlet and outlet of the multistage assembly are parametrized in terms of the geometrical and operational data, paying specific attention to the diode effect and to the number of stages. The flow may be in the whole range of the Knudsen number and therefore modeling is based on kinetic theory, while the channels are taken efficiently long in order to justify the implemented infinite capillary methodology. Various flow setups are investigated to obtain the characteristic curves of the net mass flow rate versus the pressure difference in terms of channel geometry, input pressure, imposed temperature ratio and number of stages. The present work provides a powerful modeling tool in the manufacturing of a multistage Knudsen pump meeting certain pumping specifications. |
| Databáze: | OpenAIRE |
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