Abstract
Di-ethyl-hexyl-sebacate (DEHS) aerosol nanoparticle formation in a free turbulent jet as a result of nucleation, condensation and coagulation is studied using fluid flow simulation and the method of moments under the assumption of lognormal particle size distribution. The case of high nucleation rates and the coagulation-controlled growth of particles is considered. The formed aerosol performance is jet is numerically investigated for the various nozzle diameters and two approximations of the saturation pressure dependence on the temperature. It is demonstrated that a higher polydispersity of the aerosol is obtained for smaller nozzle diameters.
Highlights
Nanoparticle formation in a turbulent jet occurs in nature and industry for various practical cases
The influence of the saturation temperature and the flow rate on the particle size distribution (PSD) of the feed aerosol in the reactor was studied theoretically by Gilfanov et al [2]
The important parameter that influences on the properties of aerosol is the jet nozzle diameter
Summary
Nanoparticle formation in a turbulent jet occurs in nature and industry for various practical cases. The turbulent gas-vapour jets in aerosol reactors are used to generate the particles of submicron size for calibration systems. As a step of the creation of a reference submicron particle generator, the aerosol formation and growth in the continuously stirred tank reactor was theoretically and experimentally investigated by Koch et al [1]. The influence of the saturation temperature and the flow rate on the particle size distribution (PSD) of the feed aerosol in the reactor was studied theoretically by Gilfanov et al [2]. The important parameter that influences on the properties of aerosol is the jet nozzle diameter. 2. Problem formulation A hot gas-vapour turbulent jet that is a feed aerosol source in a continuously stirred tank reactor is considered (figure 1) [1, 2].
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