Inhaler Spray Investigation Using High-Speed Phase-Contrast X-Ray and Schlieren Imaging

ConclusionsAs the foamy liquid-vapour mixture is forced out of the sump and into the orifice the liquid walls of the bubbles break into fragments which are forced out of the sump and tend to form a liquid-gas flow in the orifice channel. The period of high density plume observed by the schlieren technique corresponds to flash-boiling-driven liquid exiting the orifice channel.
Source: Pharmaceutical Research - Category: Drugs & Pharmacology Source Type: research