Abstract
Referring to the specificities of the flow field with anisotropic property, the group theory of particles was used and the general constitutive equation of Reynolds stress proposed by Shih was introduced to build a realizable algebraic stress model. The diffusion theory of vortex was 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 was resolved. With the numerical model, the characteristics of the cold state flow field in the quench chamber of coal slurry gasifier were predicted. The relations of the maximum descending depth and void ratio of gas with outlet momentum were further discussed.
| Original language | English |
|---|---|
| Pages (from-to) | 930-935 |
| Number of pages | 6 |
| Journal | Huagong Xuebao/Journal of Chemical Industry and Engineering (China) |
| Volume | 54 |
| Issue number | 7 |
| State | Published - Jul 2003 |
Keywords
- Algebraic stress model
- Buoyant flow
- Gas-liquid two-phase flow
- Negative pressure gradients
- Two-fluid model
- Water-coal slurry gasification