Kartik Verma, Jarrod Nachtrab, Jake Dvorak, Peter Alley, Ran Yang, Hao Gan, Jiajia Chen
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引用次数: 0
Abstract
AbstractSolid-state-based microwave ovens are promising to mitigate the non-uniformity issue for their precise controlled microwave parameters. Multiphysics modeling is a useful tool for understanding complicated microwave heating processes. However, previous models using simple or manually measured oven geometry had challenges in accurately predicting the heating patterns. This study developed a 3-D scanning approach to characterize the accurate geometric details of the cavity and incorporate it in the multiphysics modeling of solid-state microwave heating. The effect of oven geometric details on modeling accuracy was evaluated for models using the simple box, manually measured, and 3-D scanned geometries at multiple microwave frequencies and port locations. A quantitative approach was also developed to replace the previously often-used qualitative approach to compare the spatial temperature profiles between the simulation and experiments. The Multiphysics-based models using 3-D scanned geometry showed significantly or considerably smaller RMSE values (1.57 to 4.11 °C) than the models with simple box geometry (1.73 to 6.33 °C) and manually measured geometry (1.48 to 4.66 °C) at most heating scenarios. The 3-D scanned approach can accurately incorporate the irregular geometric details of the oven cavity and can improve the prediction accuracy of microwave heating models for future food products and oven development.Keywords: Solid-state3-D scanningthermal imagesheating patternsimulationCOMSOL AcknowledgementsThis study is based on research that the Tennessee Agricultural Experiment Station supported with funding from the USDA National Institute of Food and Agriculture Hatch Multistate Research capacity funding program (Accession Number 1023982) and the USDA National Institute of Food and Agriculture AFRI project (Grant No: 2021-67017-33444).Disclosure statementThe authors declare no conflict of interest.Data availabilityData will be made available on request
摘要固态微波炉因其精确控制微波参数而有望缓解非均匀性问题。多物理场建模是理解复杂微波加热过程的有效工具。然而,以前使用简单或手动测量烤箱几何形状的模型在准确预测加热模式方面存在挑战。本研究开发了一种三维扫描方法来表征腔体的精确几何细节,并将其纳入固态微波加热的多物理场建模中。在多个微波频率和端口位置使用简单的盒子、手动测量和三维扫描几何形状来评估烤箱几何细节对建模精度的影响。本文还提出了一种定量方法来代替以前常用的定性方法来比较模拟和实验之间的空间温度分布。在大多数加热情景下,使用三维扫描几何形状的基于多物理场的模型显示,与使用简单盒形几何形状(1.73至6.33°C)和手动测量几何形状(1.48至4.66°C)的模型相比,RMSE值(1.57至4.11°C)显著或相当小。三维扫描方法可以准确地反映炉腔的不规则几何细节,提高微波加热模型的预测精度,为未来食品和烤箱的发展提供参考。本研究基于美国农业部国家粮食和农业研究所Hatch多州研究能力资助计划(Accession Number 1023982)和美国农业部国家粮食和农业研究所AFRI项目(Grant No: 2021-67017-33444)资助的田纳西州农业实验站的研究。声明作者声明无利益冲突。数据可得性应要求提供数据
期刊介绍:
The Journal of the Microwave Power Energy (JMPEE) is a quarterly publication of the International Microwave Power Institute (IMPI), aimed to be one of the primary sources of the most reliable information in the arts and sciences of microwave and RF technology. JMPEE provides space to engineers and researchers for presenting papers about non-communication applications of microwave and RF, mostly industrial, scientific, medical and instrumentation. Topics include, but are not limited to: applications in materials science and nanotechnology, characterization of biological tissues, food industry applications, green chemistry, health and therapeutic applications, microwave chemistry, microwave processing of materials, soil remediation, and waste processing.