Investigations of double-stage helix-furnace hybrid atomizer

Аuthors

Nazmiev R. I.^1*, Tsivilskii I. V.^1**, Shpilev A. I.^1***, Nagulin K. Y.^2****, Gilmutdinov A. H.^2*****

1. Kazan Federal University, 18, Kremlyovskaya St., 420008, Russia
2. Kazan National Research Technical University named after A.N. Tupolev, 10, Karl Marks str., Kazan, 420111, Russia

*e-mail: NazmievR@yandex.ru
**e-mail: icivv@mail.ru
***e-mail: shpilevaleksei@yandex.ru
****e-mail: knagulin@mail.ru
*****e-mail: albert.gilmutdinov@kai.ru

Abstract

Complete numerical model of double-stage atomizer for analytical spectrometry was developed. It consists of graphite vaporizer and tungsten helix-shaped atomizer model. Our approach is based on the numerical solution of the Navier-Stokes equations and the molecular kinetics and takes into account both of heating by electric current, gas dynamics and unsteady heat transfer, as well as evaporation and condensation of substances’ atoms. Solution was validated with the help of prototype of helix-furnace atomizer specially developed for this purposes in our lab. The simulation results are in good agreement with experimental data.

Keywords:

computational fluid dynamics; thermal decomposition of substances; atomic absorption spectroscopy; electrothermal atomization

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