caa a22 4500 463234952 CHVBK 20180405153254.0 cr unu---uuuuu 170326e20070201xx s 000 0 eng 10.1007/s10404-006-0108-5 doi (NATIONALLICENCE)springer-10.1007/s10404-006-0108-5 Couette-Poiseuille flow of a gas in long microchannels [Elektronische Daten] [Wasif Zahid, Youbing Yin, Ke-Qin Zhu] The flow of a compressible, isothermal gas under slightly rarefied conditions in a 2D planar geometry is considered. The gas is shear driven and is also subject to an applied pressure gradient, which is also known as Couette-Poiseuille (CP) flow. In this paper, the full Navier-Stokes (NS) equations are solved using a perturbation expansion up to the first order. The pressure profile is solved numerically. On the basis of the solutions, effects of rarefaction and compressibility on the flow characteristics are investigated in detail. The results show the parallel flow assumption to be invalid for cases with slight rarefaction. The axial and vertical velocity components are found to depend on the degree of rarefaction, applied pressure gradient and wall velocity. The effects of rarefaction on the occurrence of back flow are also discussed. In addition, the results for the Poiseuille and CP flow with and without rarefaction can be easily obtained from our results. Springer-Verlag, 2006 Microflow nationallicence Couette-Poiseuille flow nationallicence Gaseous flow nationallicence Rarefaction nationallicence Zahid Wasif Department of Engineering Mechanics, Tsinghua University, 100084, Beijing, People's Republic of China aut Yin Youbing Department of Engineering Mechanics, Tsinghua University, 100084, Beijing, People's Republic of China aut Zhu Ke-Qin Department of Engineering Mechanics, Tsinghua University, 100084, Beijing, People's Republic of China aut Microfluidics and Nanofluidics Springer-Verlag 3/1(2007-02-01), 55-64 1613-4982 3:1<55 2007 3 10404 https://doi.org/10.1007/s10404-006-0108-5 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10404-006-0108-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Zahid Wasif Department of Engineering Mechanics, Tsinghua University, 100084, Beijing, People's Republic of China aut NATIONALLICENCE 700 1- Yin Youbing Department of Engineering Mechanics, Tsinghua University, 100084, Beijing, People's Republic of China aut NATIONALLICENCE 700 1- Zhu Ke-Qin Department of Engineering Mechanics, Tsinghua University, 100084, Beijing, People's Republic of China aut NATIONALLICENCE 773 0- Microfluidics and Nanofluidics Springer-Verlag 3/1(2007-02-01), 55-64 1613-4982 3:1<55 2007 3 10404 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer