caa a22 4500 463234898 CHVBK 20180405153253.0 cr unu---uuuuu 170326e20070201xx s 000 0 eng 10.1007/s10404-006-0107-6 doi (NATIONALLICENCE)springer-10.1007/s10404-006-0107-6 All-angle removal of CO2 bubbles from the anode microchannels of a micro fuel cell by lattice-Boltzmann simulation [Elektronische Daten] [K. Fei, C. Hong] The removal of carbon dioxide (CO2) at the anode of a micro direct methanol fuel cell (μDMFC) is critical. The bubbles are generated at the anode and may block part of the catalyst/diffusion layer, causing theμDMFC to malfunction. This work discusses the CO2 bubble dynamics of microfluidics in aμDMFC from a microscopic perspective. A two-dimensional, nine-velocity lattice-Boltzmann model was adopted in this work to simulate the two- component (CO2 bubble plus methanol solution) two-phase (gaseous and liquid) micro flow in a microchannel. The liquid-gas surface tension, the buoyancy force and the fluid-solid wall interaction force play the major roles in the bubble dynamics. They are treated as source terms in the lattice momentum equation. Simulation results indicate that the methanol stream flow rate, the pore size and the channel incline angle significantly affect the removal of CO2 bubbles. The effect of the incline angle is substantial at low stream flow rates. The critical pore size in the microchannel for removing bubbles at all angles under various flow conditions has been predicted quantitatively. Springer-Verlag, 2006 Lattice-Boltzmann model nationallicence Microchannel nationallicence Bubble dynamics nationallicence Fei K. Department of Power Mechanical Engineering, National Tsing Hua University, 30013, Hsinchu, Taiwan aut Hong C. Department of Power Mechanical Engineering, National Tsing Hua University, 30013, Hsinchu, Taiwan aut Microfluidics and Nanofluidics Springer-Verlag 3/1(2007-02-01), 77-88 1613-4982 3:1<77 2007 3 10404 https://doi.org/10.1007/s10404-006-0107-6 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10404-006-0107-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Fei K. Department of Power Mechanical Engineering, National Tsing Hua University, 30013, Hsinchu, Taiwan aut NATIONALLICENCE 700 1- Hong C. Department of Power Mechanical Engineering, National Tsing Hua University, 30013, Hsinchu, Taiwan aut NATIONALLICENCE 773 0- Microfluidics and Nanofluidics Springer-Verlag 3/1(2007-02-01), 77-88 1613-4982 3:1<77 2007 3 10404 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer