| 苹果含水率与介电常数关系模型的建构 |
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| 引用本文： | 王璨,杜羿翰,刘振宇.苹果含水率与介电常数关系模型的建构[J].农业工程,2023,13(8). |
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| 作者姓名： | 王璨 杜羿翰 刘振宇 |
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| 作者单位： | 山西农业大学农业工程学院,山西农业大学信息科学与工程学院,山西农业大学农业工程学院 |
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| 基金项目： | 国家自然科学基金项目（面上项目，重点项目，重大项目） |
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| 摘 要： | 介电常数与含水率有很高的相关性，可通过测量农产品的介电特性参数预测其干燥过程含水率，高压脉冲电场可有效加快干燥过程，但介电常数和含水率在此过程中的影响机理尚待进一步研究。为解决高压脉冲电场作用下果蔬介电常数与含水率之间关系的微观解释不明确问题，建立有效的苹果含水率与介电常数关系模型，本文以苹果为研究对象，三维模拟其内部电场参数，使用蒙特卡罗法对高压脉冲电场下苹果的介电特性进行理论模拟计算，把苹果内部宏观和微观介质作为集总参数来等效替代其内部整体结构。实验结果显示，当修正系数为8.96时，控制苹果相对水含率从88%逐步下降到18%，介电常数计算值与实测值间相对误差稳定在10%以内。研究为脉冲电场处理果蔬加工提供理论依据。
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| 关 键 词： | 苹果 高压脉冲 蒙特卡罗法 介电常数 |
| 收稿时间： | 2023/1/4 0:00:00 |
| 修稿时间： | 2023/4/14 0:00:00 |
Construction of the Relationship Model between Water Content and Dielectric Constant of Apple |
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| wangcan,duyihan and liuzhenyu.Construction of the Relationship Model between Water Content and Dielectric Constant of Apple[J].Agricultural Engineering,2023,13(8). |
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| Authors: | wangcan duyihan and liuzhenyu |
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| Institution: | College of Agricultural Engineering, Shanxi Agricultural University,College of Information Science and Engineering, Shanxi Agricultural University,College of Agricultural Engineering, Shanxi Agricultural University |
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| Abstract: | In order to solve the problem of unclear micro explanation of the relationship between the dielectric constant and the moisture content of fruits and vegetables. This article takes apples as samples and considers that a relationship model can be used to accurately detect the moisture content of apples. Currently, researchers are not yet mature in using the dielectric characteristic parameter analysis of agricultural products to simulate the moisture content of fruits during the drying process. The scope and depth of research need to be improved. By simulating the node characteristics of apples under the high-voltage pulsed electric field, the Monte Carlo method is used for simulation. By taking the macro and micro media inside the apple as lumped parameters to effectively replace its overall structure, repeated experiments have shown that when the correction coefficient is 8.96, the relative water content of the apple is gradually reduced from 88% to 18%, and the error between the dielectric constant and theoretical value of the apple is stable within 10%. The relationship between the actual moisture content and dielectric constant of apples in the research experiment is consistent, providing a theoretical basis for the treatment of fruit and vegetable production with pulsed electric fields. |
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| Keywords: | Apple high - voltage pulse Monte Carlo method dielectric constant |
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