This paper presents the bubble transport phenomenon at the anode of a micro-direct methanol fuel cell from a mesoscopic viewpoint. Carbon dioxide bubbles generated at the anode may block part of the catalyst/diffusion layer and also the flow channels that cause the malfunction. Lattice-Boltzmann simulations were performed in this paper to simulate the two-phase flow in a microchannel with an orifice which emulates the bubble dynamics in a simplified porous diffusion layer and in the flow channel. A two-dimensional, nine-velocity model was established. The buoyancy force, the liquid-gas surface tension, and the fluid-solid wall interaction force were considered and they were treated as source terms in the momentum equation. Simulation results and parametric studies show that the pore size, the fluid stream flow rate, the bubble surface tension, and the hydrophilic effect between the fluid and the solid wall play the major roles in the bubble dynamics. Larger pore size, higher methanol stream flow rate, and greater hydrophilicity are preferred for bubble removal at the anode diffusion layer and also the flow channels of the .
Skip Nav Destination
e-mail: cwhong@pme.nthu.edu.tw
Article navigation
May 2006
This article was originally published in
Journal of Fuel Cell Science and Technology
Research Papers
Lattice Boltzmann Simulations of Bubble Dynamics at the Anode of a
K. Fei,
K. Fei
Department of Power Mechanical Engineering,
National Tsing Hua University
, Hsinchu 30013, Taiwan
Search for other works by this author on:
C. H. Cheng,
C. H. Cheng
Department of Power Mechanical Engineering,
National Tsing Hua University
, Hsinchu 30013, Taiwan
Search for other works by this author on:
C. W. Hong
C. W. Hong
Department of Power Mechanical Engineering,
e-mail: cwhong@pme.nthu.edu.tw
National Tsing Hua University
, Hsinchu 30013, Taiwan
Search for other works by this author on:
K. Fei
Department of Power Mechanical Engineering,
National Tsing Hua University
, Hsinchu 30013, Taiwan
C. H. Cheng
Department of Power Mechanical Engineering,
National Tsing Hua University
, Hsinchu 30013, Taiwan
C. W. Hong
Department of Power Mechanical Engineering,
National Tsing Hua University
, Hsinchu 30013, Taiwane-mail: cwhong@pme.nthu.edu.tw
J. Fuel Cell Sci. Technol. May 2006, 3(2): 180-187 (8 pages)
Published Online: October 20, 2005
Article history
Received:
July 15, 2005
Revised:
October 20, 2005
Citation
Fei, K., Cheng, C. H., and Hong, C. W. (October 20, 2005). "Lattice Boltzmann Simulations of Bubble Dynamics at the Anode of a ." ASME. J. Fuel Cell Sci. Technol. May 2006; 3(2): 180–187. https://doi.org/10.1115/1.2174067
Download citation file:
Get Email Alerts
Cited By
Optimization of Thermal Non-Uniformity Challenges in Liquid-Cooled Lithium-Ion Battery Packs Using NSGA-II
J. Electrochem. En. Conv. Stor (November 2025)
In Situ Synthesis of Nano PtRuW/WC Hydrogen Evolution Reaction Catalyst for Acid Hydrogen Evolution by a Microwave Method
J. Electrochem. En. Conv. Stor (November 2025)
Intelligently Constructing Polyaniline/Nickel Hydroxide Core–Shell Nanoflowers as Anode for Flexible Electrode-Enhanced Lithium-/Sodium-Ion Batteries
J. Electrochem. En. Conv. Stor (November 2025)
State of Health Estimation Method for Lithium-Ion Batteries Based on Multifeature Fusion and BO-BiGRU Model
J. Electrochem. En. Conv. Stor (November 2025)
Related Articles
Effects of Surface Tension on Two-Phase Void Drift Between Triangle Tight Lattice Subchannels
J. Eng. Gas Turbines Power (January,2009)
Numerical Simulation of Evaporating Two-Phase Flow in a High-Aspect-Ratio Microchannel with Bends
J. Heat Transfer (August,2017)
Mili-Scale Visualization of Bubble Growth-Translation and Droplet Impact Dynamics
J. Heat Transfer (August,2006)
A New Two-Phase Flow Map and Transition Boundary Accounting for Surface Tension Effects in Horizontal Miniature and Micro Tubes
J. Heat Transfer (October,2001)
Related Proceedings Papers
Related Chapters
Energy Balance for a Swimming Pool
Electromagnetic Waves and Heat Transfer: Sensitivites to Governing Variables in Everyday Life
Risk Mitigation for Renewable and Deispersed Generation by the Harmonized Grouping (PSAM-0310)
Proceedings of the Eighth International Conference on Probabilistic Safety Assessment & Management (PSAM)
Dynamics and Mechanisms of Intracellular Calcium Waves Elicited by Tandem Bubble-Induced Jetting Flow
Proceedings of the 10th International Symposium on Cavitation (CAV2018)