Abstract: The microchannel of interaction chamber was divided into six areas: feeding zone, fluid separation zone, impingingzone, compel jet zone, outspreading zone and discharging zone. Fluid dynamics behaviour of high velcocity jet homogenizer wasanalysed. It was useful to discuss the reaction mechanisms of ultramicro-pulverization in jet homogenizer.

Key words: jet homogenizer, interaction channel, fluid dynamics, ultramicro-pulverization