A physical explanation of the gas flow diode effect
A physical explanation of the gas flow diode effect
复制标题
气流二极管效应的物理解释
DOI:
10.1007/s10404-016-1809-z
复制
发表时间:
2016
影响因子:
2.8
通讯作者:
Veltzke T
中科院分区:
文献类型:
--
作者:
Graur I;Meólans JG;Perrier P;Thöming J;Veltzke T
Gas flow properties in channels with slightly varying cross section have a dependency on the direction of channel perfusion when the gas is in the slip and transitional flow regimes. In the past, it was observed that the flow rate in converging direction is higher compared to the case where the channel diverges alongside. This gas flow diode effect does neither exist in the continuum regime nor in the free molecular regime, and it has its maximum at the same level of gaseous rarefaction as the well-known Knudsen minimum. However, no comprehensive study on the physics of this diode effect is carried out yet. In order to overcome this knowledge gap, the current paper proceeds our previous works by an appropriate experimental study. Here we can show that the diode effect crucially depends on the proportion of inclined walls to the overall channel inner surface. Also the inclination of the wall itself determines the strength of the diode effect meaning that the diodicity increases with the opening angle. Furthermore, we found indication that the diodicity also depends on the molar mass and the internal structure of the impinging gas molecules. Finally, we propose an explanation of the diode effect that is mainly based on the tangential reflection process of gas molecules colliding with the inclined walls of a tapered channel.
登录
查看更多内容
DOI:
--
发表时间:
2012
期刊:
影响因子:
--
作者:
J. Méolans;M. Nacer;M. Rojas;P. Perrier;I. Graur
通讯作者:
I. Graur
DOI:
--
发表时间:
1998
期刊:
影响因子:
--
作者:
C. Aubert;R. Caen;S. Colin
通讯作者:
S. Colin
影响因子:
2.4
作者:
Tatsios, Giorgos;Stefanov, Stefan K.;Valougeorgis, Dimitris
通讯作者:
Valougeorgis, Dimitris
DOI:
--
发表时间:
2015
期刊:
影响因子:
--
作者:
I. Graur;T. Veltzke;J. Méolans;M. Ho;J. Thöming
通讯作者:
J. Thöming
DOI:
10.1116/1.1897703
发表时间:
2005
期刊:
Journal of Vacuum Science and Technology
影响因子:
--
作者:
F. Sharipov;Guilherme Bertoldo
通讯作者:
Guilherme Bertoldo