| Full text | |
| Author(s): |
Total Authors: 4
|
| Affiliation: | [1] Univ Sao Paulo, Inst Quim Sao Carlos, BR-13566590 Sao Carlos, SP - Brazil
[2] IPEN CNEN SP, Nucl & Energy Res Inst, BR-05508000 Sao Paulo, SP - Brazil
[3] Imperial Coll London, Dept Chem, South Kensington Campus, London SW7 2AZ - England
Total Affiliations: 3
|
| Document type: | Journal article |
| Source: | PHYSICAL REVIEW FLUIDS; v. 2, n. 10 OCT 17 2017. |
| Web of Science Citations: | 2 |
| Abstract | |
Recent experimental data on a fuel-cell-like system revealed insights into the fluid flow in both free and porous media. A computational model is used to investigate the momentum and species transport in such a system, solved using the finite element method. The model consists of a stationary, isothermal, diluted species transport in free and porous media flow. The momentum transport is treated using different formulations, namely, Stokes-Darcy, Darcy-Brinkman, and hybrid Stokes-Brinkman formulations. The species transport is given by the advection equation for a reactant diluted in air. The formulations are compared to each other and to the available experimental data, where it is concluded that the Darcy-Brinkman formulation reproduces the data appropriately. The validated model is used to investigate the contribution of convection in reactant transport in porous media of fuel cells. Convective transport provides a major contribution to reactant distribution in the so-called diffusion media. For a serpentine channel and flow with Re = 260-590, convection accounts for 29-58% of total reactant transport to the catalyst layer. (AU) | |
| FAPESP's process: | 14/22130-6 - Electrocatalysis Beyond Platinum: Development of Sustainable Electrocatalysts |
| Grantee: | Thiago Lopes |
| Support Opportunities: | Research Grants - Young Investigators Grants |
| FAPESP's process: | 13/16930-7 - ELECTROCATALYSIS V: ELECTROCATALYTIC PROCESSES OF CHEMICAL AND ELECTRICAL ENERGY INTERCONVERSION |
| Grantee: | Edson Antonio Ticianelli |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 13/11316-9 - Modeling and Simulation of Proton Exchange Membrane Fuel Cell |
| Grantee: | Otávio Beruski |
| Support Opportunities: | Scholarships in Brazil - Doctorate (Direct) |
| FAPESP's process: | 14/50279-4 - Brasil research centre for gas innovation. (fapesp-bg brasil) |
| Grantee: | Julio Romano Meneghini |
| Support Opportunities: | Research Grants - Applied Research Centers Program |
| FAPESP's process: | 11/50727-9 - Desenvolvimento de sistemas para producao de hidrogenio e para geracao e utilizacao de energia eletro-quimica. (fapesp-mct/cnpq-pronex 2011) |
| Grantee: | Ernesto Rafael Gonzalez |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 17/15304-6 - Electrocatalysis Beyond Platinum: Development of Sustainable Electrocatalysts |
| Grantee: | Thiago Lopes |
| Support Opportunities: | Scholarships in Brazil - Young Researchers |
| FAPESP's process: | 14/09087-4 - Studies on the use of bioethanol in Proton Exchange Membrane and Solid Oxide Fuel Cells |
| Grantee: | Marcelo Linardi |
| Support Opportunities: | Research Projects - Thematic Grants |