caa a22 4500 46323510X CHVBK 20180405153254.0 cr unu---uuuuu 170326e20070601xx s 000 0 eng 10.1007/s10404-007-0159-2 doi (NATIONALLICENCE)springer-10.1007/s10404-007-0159-2 Veijola Timo Department of Electrical and Communications Engineering, Helsinki University of Technology, P.O. Box 3000, 02015, TKK, Finland aut A two-port model for wave propagation along a long circular microchannel [Elektronische Daten] [Timo Veijola] A compact model for oscillatory flow in a long microchannel with a circular cross-section is derived from the linearised Navier-Stokes equations. The resulting two-port model includes the effects of viscosity due to rarefied gas in the slip flow regime, inertia, compressibility and losses due to heat exchange. Both an acoustic impedance T network and an acoustic admittance Π network are presented for implementation in system level and circuit simulation tools. Also, reduced T and Π networks with constant component values are given to be used in the low frequency region. They are useful in time domain simulations, too. To verify the analytical model, simulations with a harmonic finite element solver for acoustic viscous flow are performed for microchannels exploiting the axisymmetry. The simulation results with both open and closed outlet conditions are compared with the two-port model with excellent agreement. Contribution of the slip conditions and the accuracy of the simple model are demonstrated. Springer-Verlag, 2007 Acoustic wave propagation nationallicence Slip flow nationallicence Microchannel nationallicence Compact model nationallicence Rarefied gas nationallicence Microfluidics and Nanofluidics Springer-Verlag 3/3(2007-06-01), 359-368 1613-4982 3:3<359 2007 3 10404 https://doi.org/10.1007/s10404-007-0159-2 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10404-007-0159-2 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Veijola Timo Department of Electrical and Communications Engineering, Helsinki University of Technology, P.O. Box 3000, 02015, TKK, Finland aut NATIONALLICENCE 773 0- Microfluidics and Nanofluidics Springer-Verlag 3/3(2007-06-01), 359-368 1613-4982 3:3<359 2007 3 10404 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer