@Article{CiCP-13-5, author = {}, title = {Extended Thermodynamic Approach for Non-Equilibrium Gas Flow}, journal = {Communications in Computational Physics}, year = {2013}, volume = {13}, number = {5}, pages = {1330--1356}, abstract = {
Gases in microfluidic structures or devices are often in a non-equilibrium state. The conventional thermodynamic models for fluids and heat transfer break down and the Navier-Stokes-Fourier equations are no longer accurate or valid. In this paper, the extended thermodynamic approach is employed to study the rarefied gas flow in microstructures, including the heat transfer between a parallel channel and pressure-driven Poiseuille flows through a parallel microchannel and circular microtube. The gas flow characteristics are studied and it is shown that the heat transfer in the non-equilibrium state no longer obeys the Fourier gradient transport law. In addition, the bimodal distribution of streamwise and spanwise velocity and temperature through a long circular microtube is captured for the first time.
}, issn = {1991-7120}, doi = {https://doi.org/10.4208/cicp.301011.180512a}, url = {https://global-sci.com/article/80677/extended-thermodynamic-approach-for-non-equilibrium-gas-flow} }