Numerical and experimental analysis of the single droplet evaporation in a ultrasonic spray pyrolysis device

被引：5

作者：

Majeric, Peter ^{[1
,3
]}

Rudolf, Rebeka ^{[1
,3
]}

Friedrich, Bernd ^{[2
]}

Ternik, Primoz

机构：

[1] Univ Maribor, Inst Mat Technol, Fac Mech Engn, Maribor, Slovenia

[2] Rhein Westfal TH Aachen, IME Inst Proc Met & Met Recycling, Aachen, Germany

[3] Zlatarna Celje Doo, Celje, Slovenia

来源：

DRYING TECHNOLOGY | 2018年 / 36卷 / 01期

关键词：

Dried particles; evaporation; numerical modelling; tem characterization; water droplet; DRYING KINETICS; PARTICLE FORMATION; MODELS; FLOW; TECHNOLOGY; IMAGE;

D O I：

10.1080/07373937.2017.1292520

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The present study deals with the numerical analysis of the water droplet evaporation in the carrier gas inside an ultrasonic spray pyrolysis (USP) device. Droplet evaporation is studied through numerical computational fluid dynamics simulation using Ansys Fluent version 16.1 software. The governing equations for mass, momentum, and energy contain source terms for the effects of droplet evaporation. The results are provided as time dependent evaporation rate, temperature and diameter of droplet. Additional experimental evaporation of HAuCl4 solution droplets with temperatures of 80, 100 and 120 degrees C was performed on a USP device. The obtained dried particles of gold chloride were characterized with TEM and analysed for their size and shapes to determine the effect of evaporation rate on the dried particle morphology. This provides insight into selecting optimal parameters for gold nanoparticle synthesis with HAuCl4 in USP, for targeted sizes and shapes of the nanoparticles.

引用

页码：11 / 20

页数：10

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