CFD modeling of flow dynamics inside a vortex solar gasifier

Solar-driven gasification is a novel method that converts carbonaceous feedstocks, especially low-grade feedstocks, into synthesis gas, commonly known as syngas. The solar chemical reactor contains swirling flow patterns similar to those found in a solar-enhanced vortex gasifier, and velocity measurements in this reactor are available in the literature. In the present study, the performance of a vortex flow solar gasifier was evaluated numerically using Computational Fluid Dynamics (CFD). Five distinct turbulence models were applied in order to model the turbulence flow inside a gasifier reactor. The numerical results demonstrated that the k-ω SST turbulence model is a suitable model for modeling the flow within the gasifier. Additionally, for all situations, the pressure at the outlet had reduced significantly and reached zero. By increasing the longitudinal distance, the velocity gradually raised, and eventually, it reached its maximum value at the exit section. Moreover, the average turbulence kinetic energy inside the chamber was raised by increasing particles velocity entering the reactor

کلیدواژه ها:

Vortex-flow ، Gasifier ، Computational Fluid Dynamics ، Particles.