This Note has examined the three-dimensional viscous effects in micronozzles by means of comparison with experimental data and two-dimensional computations. The main results can be sum- marized as follows: first, three-dimensional viscous effects are not the primary cause of divergence between two-dimensional predic- tions and experimental data. For the nozzle geometries examined experimentally, the throat aspect ratio is large enough so that vis- cous side-wall effects have little influence.
展开▼
