Open AccessNumerical simulation of photocatalytic oxidation of gaseous pollutants using low Reynolds number turbulence models
Author(s) -
Shijian Peng,
Bensheng Zhao,
Haiyan Zhang,
Jia Wang,
Baoqing Deng
Publication year - 2021
Publication title -
journal of air pollution and health
Language(s) - English
Resource type - Journals
ISSN - 2476-3071
DOI - 10.18502/japh.v5i4.6444
Subject(s) - turbulence , laminar flow , mechanics , reynolds number , computational fluid dynamics , pollutant , flow (mathematics) , fluent , computation , materials science , environmental science , physics , chemistry , computer science , algorithm , organic chemistry
Photocatalytic oxidation of gaseous pollutants in differential reactors is simulated using computational fluid dynamics.
Materials and methods: The momentum equation and pollutant transport are solved by using ANSYS Fluent. The SIMPLE algorithm is used to treat the pressure-velocity coupling. The laminar flow and low Reynolds k−ε models are used to describe turbulence.
Results: Velocity field distribution and degradation efficiency of different models at various flow rates were obtained and compared with the experimental data. The simulation results of degradation efficiency under different models are basically consistent.
Conclusion: Although low Reynolds k-ε models have better simulation results for high inlet flow rates, in terms of computation complexity, laminar flow is recommended for simulation.