CSBE-SCGAB

FEM simulation of RF selective heating of red flour beetle in stored canola seeds and effect of voltage on the selective heating

Authors: Yu, Daeung; Shrestha, Bijay; Baik, Oon-Doo
Description: Using a finite element method based commercial simulation package (COMSOL Multi-physics) radio frequency (1.5 kW, 27.12 MHz) selective heating of red flour beetle in two different volumes of bulk canola seeds at 5%, 7%, 9%, and 11% moisture contents was simulated. The electric field formation, dielectric heat generation, non-isothermal fluid flow, and heat transfer including surface to surface radiation were solved simultaneously. The simulated and the measured temperatures of the seeds were compared with the different moisture contents and volumes of the seeds. Similar comparison was also conducted for the insects and the seeds. The differences between the simulated and the measured temperatures of the seeds were not more than 17.4%, 13.4%, 8.08%, and 19.0% for the small volume seeds and 14.8%, 15.6%, 19.5%, and 18.8% for the large volume seeds at 5%, 7%, 9%, and 11% moisture contents, respectively. Non-uniform radio frequency heating of the seeds was observed regardless of the moisture content and the volume of the seeds. The radio frequency selective heating of the insects was most effective for the small volume seeds at 11% moisture content. The temperature of the insects was 14.6
Keywords: computer simulation, radio frequency, selective heating, voltage, canola seed
Conference name: CSBE/SCGAB 2017 Annual Conference, Canad Inns Polo Park, Winnipeg, Manitoba, 6-10 August 2017.
Session name: Session 2C: Grain & Food Storage: Fundamentals and Techniques
Publisher: Canadian Society for Bioengineering
Date: 2017-08-07
Publication type:
  • Technical conference
Type: Text.Article
Format: PDF
Identifier: CSBE17038
Coverage: Canada
Language 1: en
Rights: Canadian Society for Bioengineering

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