Encyclopaedia Index
TITLE : MODELLING OF TURBULENT TWO-PHASE GAS-PARTICLE UPFLOW
IN A VERTICAL PIPE
BY : CHAM Development Team - M R Malin
FOR : PHOENICS Validation of 2-Phase Modelling Options
DETAILS :
- Two-Dimensional Turbulent Two-Phase Air-Particle Flow.
- Cylindrical-polar computational grid.
- Spherical-particles drag law for interphase momentum transfer.
- Turbulence represented via the k-e turbulence model; and also the
Chen-Wood and the Mostafa-Mongia k-e models which account for
gas turbulence modulation due to particles.
- Parabolic option is used and the calculation is terminated 70
diameters downstream, i.e. when the flow is fully developed.
NOTES :
- These flows have been studied experimentally by Tsuji et al [1984],
and numerically by Adeniji-Fashola and Chen [1990] among others.
- The Reynolds number is 30,000 and the pipe diameter 0.0305m.
- The particle diameter is taken as 200 microns.
- The solids-to-air mass-flow ratio is 1.0.
- The solid-to-air density ratio is 866.
PICTURES :
1. Fully-developed vertical velocity profiles.
2. Fully-developed turbulence-energy profiles.
GAS-PARTICLE PIPE UPFLOW: Vertical velocity radial profiles.
GAS-PARTICLE PIPE UPFLOW: Turbulence-energy radial profiles.