Baier, Tobias ; Hardt, Steffen (2024)
Gas separation in a Knudsen pump inspired by a Crookes radiometer.
In: Microfluidics and Nanofluidics, 2020, 24 (6)
doi: 10.26083/tuprints-00023927
Artikel, Zweitveröffentlichung, Verlagsversion
 | Es ist eine neuere Version dieses Eintrags verfügbar. |
Kurzbeschreibung (Abstract)
In a Knudsen pump, gas flow is induced by thermal gradients along a channel when the mean free path of the gas molecules is comparable to the geometric feature size. By periodically varying both the channel dimension and the reflection properties of gas molecules at the channel walls, a gas flow along the channel can be induced by application of a constant temperature difference between the channel walls. Inspired by the Crookes-Radiometer, one such arrangement consists of placing an array of plates with different reflection properties on their opposite sides along a channel. We investigate the transport of binary gas mixtures along such channels by direct simulation Monte Carlo (DSMC), focusing on the discrimination in transport of individual species due to gradients in temperature, composition and pressure. An exemplary separation column is investigated where a counterflow involving a combination of thermally induced, pressure driven and diffusion flows is established, resulting in an enrichment of the individual species at opposite ends of the column.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2024 |
| Autor(en): | Baier, Tobias ; Hardt, Steffen |
| Art des Eintrags: | Zweitveröffentlichung |
| Titel: | Gas separation in a Knudsen pump inspired by a Crookes radiometer |
| Sprache: | Englisch |
| Publikationsjahr: | 30 April 2024 |
| Ort: | Darmstadt |
| Publikationsdatum der Erstveröffentlichung: | Juni 2020 |
| Ort der Erstveröffentlichung: | Berlin ; Heidelberg |
| Verlag: | Springer |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Microfluidics and Nanofluidics |
| Jahrgang/Volume einer Zeitschrift: | 24 |
| (Heft-)Nummer: | 6 |
| Kollation: | 10 Seiten |
| DOI: | 10.26083/tuprints-00023927 |
| URL / URN: | https://tuprints.ulb.tu-darmstadt.de/23927 |
| Zugehörige Links: | |
| Herkunft: | Zweitveröffentlichung DeepGreen |
| Kurzbeschreibung (Abstract): | In a Knudsen pump, gas flow is induced by thermal gradients along a channel when the mean free path of the gas molecules is comparable to the geometric feature size. By periodically varying both the channel dimension and the reflection properties of gas molecules at the channel walls, a gas flow along the channel can be induced by application of a constant temperature difference between the channel walls. Inspired by the Crookes-Radiometer, one such arrangement consists of placing an array of plates with different reflection properties on their opposite sides along a channel. We investigate the transport of binary gas mixtures along such channels by direct simulation Monte Carlo (DSMC), focusing on the discrimination in transport of individual species due to gradients in temperature, composition and pressure. An exemplary separation column is investigated where a counterflow involving a combination of thermally induced, pressure driven and diffusion flows is established, resulting in an enrichment of the individual species at opposite ends of the column. |
| Freie Schlagworte: | Rarefied gas dynamics, Knudsen pump, Gas separation, Direct Simulation Monte Carlo (DSMC) |
| ID-Nummer: | Artikel-ID: 41 |
| Status: | Verlagsversion |
| URN: | urn:nbn:de:tuda-tuprints-239273 |
| Sachgruppe der Dewey Dezimalklassifikatin (DDC): | 500 Naturwissenschaften und Mathematik > 530 Physik 600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften und Maschinenbau |
| Fachbereich(e)/-gebiet(e): | 16 Fachbereich Maschinenbau 16 Fachbereich Maschinenbau > Fachgebiet Nano- und Mikrofluidik (NMF) |
| Hinterlegungsdatum: | 30 Apr 2024 11:35 |
| Letzte Änderung: | 02 Mai 2024 07:16 |
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| Suche nach Titel in: | TUfind oder in Google |
Verfügbare Versionen dieses Eintrags
- Gas separation in a Knudsen pump inspired by a Crookes radiometer. (deposited 30 Apr 2024 11:35) [Gegenwärtig angezeigt]
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