Intensification of Transport Processes in Fluid-Filled Porous Media by Sound Waves. Application to Fuel Cell Technology
Abstract
In this work we aim developing a novel theoretical framework to evaluate the feasibility of attaining significant improvement of fuel cells performance and stability by increasing the transport processes in porous partially fluid filled cathode compartment through the application of acoustic and structural waves. We have developed a unified model of structural/acoustic wave propagation in the PEM cathode compartment and coupled it with mass transfer in the porous media. A novel generalized filtration law that accounts for dynamic loadings, varying saturation, and solid structure distortion describing mass transfer in this complex but generic system has been found. It has been demonstrated that vibration gives rise to net change of saturation inside porous medium. Based on the numerical and experimental results number of practical recommendations optimizing material selections and performance regime has been made. Developed methodology is useful for wide range of Fuel Cell problems as well as for wide range of other porous structures and could serve as an important design tool.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 31, 2004
- Accession Number
- ADA420039
Entities
People
- Alexander Staroseisky
- Igor Fedchenia
- Wenlong Li
Organizations
- United Technologies Corporation