GONG Xiaobo, GU Zhaolin, LIN Gaoping, et al. NUMERICAL SIMULATION OF GAS-LIQUID TWO-PHASE FLOW WITH REVERSE BUOYANCY IN QUENCH CHAMBER OF COAL GASIFIER AND ITS APPLICATION[J]. CIESC Journal, 2003, (7): 930-935.
GONG Xiaobo, GU Zhaolin, LIN Gaoping, et al. NUMERICAL SIMULATION OF GAS-LIQUID TWO-PHASE FLOW WITH REVERSE BUOYANCY IN QUENCH CHAMBER OF COAL GASIFIER AND ITS APPLICATION[J]. CIESC Journal, 2003, (7): 930-935.DOI:
Referring to the specificities of the flow field with anisotropic property
the group theory of particles is used and the general constitutive equation of Reynolds stress proposed by Shih is introduced to build a realizable algebraic stress model. The diffusion theory of vortex is also used in the model to set up the diffusion equation of gas
and the barrier caused by the variation of flow patterns inside the flow field is resolved. With the numerical model
the characteristics of the “cold state” flow field in the quench chamber of coal slurry gasifier are predicted. The relations of the maximum descending depth and void ratio of gas with outlet momentum are further discussed.