Numerical Calculation of Gas Flows in High
Temperature Ceramic Filters
Hui Jing,Xu Tingxiang,Zhang Lite,Gao Tieyu
(School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China)
Abstract: The numerical calculation of gas flow in high temperature ceramic filters was
performed by using the FLUENT computational fluid dynamics software.The gas flow and
pressure fields inside the tangential flow vessel and radial flow vessel were obtained.The
result shows that the complicated flow system including sudden-changed cross-section and
porous media, with suitable simulation of computational zones and generation of grid, can
be resolved by FLUENT code satisfactorily.The flow loss in ceramic filters mainly occurs
in the porous media,and decreasing of the flow loss in the porous media is the key to
decreasing of the flow loss.When gas flows into the vessel radially, the impact of the gas
flow to the ceramic filters is large.When gas flows into the vessel tangentially, the
velocity near the vessel wall is large and the impact to the filers is small.The pressure
drop is smaller in tangential flow vessel than in radial flow vessel.For protecting the
filters and reducing pressure drop, the tangential flow vessel is more suitable than
radial flow vessel.
Keywords: high temperature ceramic filter; porous media; numerical calculation