Characterization of a double-pass spray chamber for ICP spectrometry of computer simulation (CFD)

摘要

Computational Fluid Dynamics (CFD) is applied to fundamental investigations on the aerosol flow and its modification in spray chambers typically used in ICP-OES spectrometry. Detailed information is gained on the flow field (argon flow),the droplet motion and on the droplet deposition at different palces on the walls inside the chamber, which is not accessible experimentally. The temporal course of the calculated mass flow rate at the outlet of a double-pass Scott type spray chamber is ocmpared with an analytical signal received from the ICP spectrometre. The shape of the calculated time-resolved mass flow corresponds well with the shape of the analytical signal. The information on the detailed functions of various types of spray gained by CFD and be used for optimization of their performance.