Abstract: The liquid flow on a single-pass sieve distillation tray is simulated with a three-
dimensional computational fluid dynamics (CFD) program with the K-ε turbulence model. In
the model, a source term SMi is formulatedin the Navier-Stokes equations to represent the
interfacial momentum transfer and another term Sc is added to themass transfer equation as
the source of interfacial mass transfer. The simulation provides the detailed informationof
the three-dimensional distribution of liquid velocity on the tray, the circulation area and
the concentration profilealong the height of liquid layer.

Key words: computational fluid dynamics, distillation, circulation area, sieve tray

摘要： The liquid flow on a single-pass sieve distillation tray is simulated with a three-
dimensional computational fluid dynamics (CFD) program with the K-ε turbulence model. In
the model, a source term SMi is formulatedin the Navier-Stokes equations to represent the
interfacial momentum transfer and another term Sc is added to themass transfer equation as
the source of interfacial mass transfer. The simulation provides the detailed informationof
the three-dimensional distribution of liquid velocity on the tray, the circulation area and
the concentration profilealong the height of liquid layer.

关键词: computational fluid dynamics;distillation;circulation area;sieve tray