Lattice Boltzmann modeling and simulation of isothermal drying of capillary porous media

[EN] Modeling of dring of capillary porous media is difficult due to the complex and coupled heat and mass transfer that occur at dynamic liquid-gas-sold interface. Thus far, drying was simulated using either continuum models or pore-network models, both of which have limitations. In this work, the Lattice Boltzmann Method (LBM) is used to simulate the drying in porous media. The LBM is ideal for such simulations as it can incorporate complex effects in a simple way to exhibit realistic fluid-gas interface during drying of capillary porous media.Zachariah, GT.; Panda, D.; Surasani, VK. (2018). Lattice Boltzmann modeling and simulation of isothermal drying of capillary porous media. En IDS 2018. 21st International Drying Symposium Proceedings. Editorial Universitat Politècnica de València. 339-346. https://doi.org/10.4995/IDS2018.2018.7464OCS33934

Three-dimensional mathematical model to study effects of geometrical parameters on performance of solid oxide fuel cell

A 3D mathematical model is developed to study effects of various geometrical parameters such as cathode to anode thickness ratio, rib width, and channel width under various flow conditions, on the performance of solid oxide fuel cell (SOFC). These parameters represent the cathode supported configuration of the solid oxide fuel cell. It is observed from simulation results that performance of SOFC fuel cell is increased at higher cathode to anode thickness. Simulation results also showed that for different volumetric flow rates, the current density and fuel cell performance decrease as rib width increases, what is due to higher contact resistance. It is also shown that by increasing the channel width, the fuel cell performance was increased due to increase in the reaction surface area. Simulation results are compared and validated with literature experimental data, showing well agreement