自然科学版 英文版
自然科学版 英文版
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中南大学学报(英文版)

Journal of Central South University

Vol. 23    No. 12    December 2016

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Numerical modeling dynamic process of multi-feed microwave heating of industrial solution media
YANG Biao(杨彪)1, 2, 3, SUN Jun(孙俊)1, 2, 3, LI Wei(李玮)2, 3, 4, PENG Jin-hui(彭金辉)2, 3, LI You-ling(李幼灵)5, LUO Hui-long(罗会龙)2, 3, GUO Sheng-hui(郭胜惠)2, 3, ZHANG Zhu-ming(张竹敏)5, SU He-zhou(苏鹤州)5, SHI Ya-ming(史亚鸣)5

1. Faculty of Information Engineering and Automation, Kunming University of Science and Technology, Kunming 650500, China;
2. Key Laboratory of Unconventional Metallurgy, Ministry of Education, Kunming University of Science and Technology, Kunming 650093, China;
3. Engineering Laboratory of Microwave Application and Equipment Technology of Yunnan Province, Kunming University of Science and Technology, Kunming 650093, China;
4. Faculty of Science, Kunming University of Science and Technology, Kunming 650093, China;
5. Kunming Iron & Steel Holding Co., Ltd., Kunming 650302, China

Abstract:The exothermic efficiency of microwave heating an electrolyte/water solution is remarkably high due to the dielectric heating by orientation polarization of water and resistance heating by the Joule process occurred simultaneously compared with pure water. A three-dimensional finite element numerical model of multi-feed microwave heating industrial liquids continuously flowing in a meter-scale circular tube is presented. The temperature field inside the applicator tube in the cavity is solved by COMSOL Multiphysics and professional programming to describe the momentum, energy and Maxwell’s equations. The evaluations of the electromagnetic field, the temperature distribution and the velocity field are simulated for the fluids dynamically heated by single- and multi-feed microwave system, respectively. Both the pilot experimental investigations and numerical results of microwave with single-feed heating for fluids with different effective permittivity and flow rates show that the presented numerical modeling makes it possible to analyze dynamic process of multi-feed microwave heating the industrial liquid. The study aids in enhancing the understanding and optimizing of dynamic process in the use of multi-feed microwave heating industrial continuous flow for a variety of material properties and technical parameters.

 

Key words: microwave with multi-feed heating; industrial flow; dynamical process; numerical computation; solution media

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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