固体粒子在压缩机叶栅内的部分沉积模型研究

Numerical studies in axial compressor cascades using partial deposition model

关键词:  轴流式压缩机  粒子沉积+  沉积模型+  数值计算

Key words:  Axial flow compressor  Particle deposition~+  Deposition model  Numerical calculation

摘要:

针对轴流压缩机叶栅内固体微粒沉积的问题,发展了新的粒子沉积模型(部分沉积模型)。采用此模型和普遍采用的完全沉积模型进行了计算,计算结果表明两种模型对叶栅前缘处的粒子沉积影响明显。采用部分沉积模型时,叶片前缘处不会出现短时间内不合实际的大量沉积现象,而表现为一种比较均匀的粒子沉积。

Abstract:

To predict particle deposition in axial compressor cascades, a new particle deposition model was developed. Particle deposition was studied by "partial deposition model" and "entireness deposition model". The calculation results showed the two models have large effect on the deposition at the leading edge. Using part deposition model, the phenomenon of a great deal of particle deposition at the leading edge during very short period disappeared while particle deposition appeared relatively even deposition.