Inscrição na biblioteca: Guest

ISSN Online: 2377-424X

ISBN Print: 978-1-56700-474-8

ISBN Online: 978-1-56700-473-1

International Heat Transfer Conference 16
August, 10-15, 2018, Beijing, China

A GPU-BASED LATTICE BOLTZMANN MODEL FOR REALISTIC DROPLET FLOW IN GAS CHANNEL OF FUEL CELLS

Get access (open in a dialog) DOI: 10.1615/IHTC16.ecl.022283
pages 4107-4114

Resumo

A multi-component multi-phase (MCMP) lattice Boltzmann (LB) model, which is improved based on the original pseudopotential model, was proposed to study the realistic droplet flow in gas channel of fuel cells. In the improved model, realistic density and viscosity ratios between liquid water, water vapor and air are obtained with good thermodynamic consistency of water component. The modified pressure tensor of MCMP LB model is derived and surface tension is independently tunable. Appropriate multi-phase boundaries are applied to both water and air components, and the computational speedup is obtained by parallelizing the code with graphics processing unit. The proposed MCMP LB model is validated with Laplace law, and the effects of initial droplet size on dynamic behaviors of droplet are investigated. The results presented in this study are expected to give a more microscopic and accurate view in the characteristics of droplet flow, and this model can be extended to model most of engineering multi-phase flow problems.