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茶叶科学 ›› 2019, Vol. 39 ›› Issue (5): 547-554.doi: 10.13305/j.cnki.jts.2019.05.006

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基于CFD和RSM的红茶萎凋机性能参数优化

安霆1, 2, 江用文2, 梁高震1, 2, 胡斌1, *, 董春旺2, *   

  1. 1. 石河子大学机械电气工程学院,新疆 石河子 832000;
    2. 中国农业科学院茶叶研究所,浙江 杭州 310008
  • 收稿日期:2019-01-24 修回日期:2019-02-27 出版日期:2019-10-15 发布日期:2019-10-15
  • 通讯作者: hb_mac@sina.com,dongchunwang@tricaas.com
  • 作者简介:安霆,男,硕士研究生,主要从事茶叶机械方面的研究。
  • 基金资助:
    国家重点研发项目(2017YFD0400802)、中央级院所基本科研业务专项(1610212018005)

Optimization of Performance Parameters of Black Tea Withering Machine Based on CFD and RSM

AN Ting1, 2, JIANG Yongwen2, LIANG Gaozhen1, 2, HU Bin1, *, DONG Chunwang2, *   

  1. 1. Machinery and Electricity Engineering College, Shihezi University, Shihezi 832000, China;
    2. Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310008, China
  • Received:2019-01-24 Revised:2019-02-27 Online:2019-10-15 Published:2019-10-15

摘要: 为探明萎凋机结构参数对萎凋性能的影响特性,通过流体力学软件进行萎凋环境的数值模拟分析,以无量纲化后的温度场综合指标作为萎凋性能优劣的评判指标,并采用响应面法(RSM)对影响萎凋性能的3个因素(萎凋机层高x1、萎凋机与萎凋房空间距x2、气路位置x3)进行优化。结果表明,各因素对萎凋品质的影响重要性顺序依次为:气路位置>萎凋机层高>空间距;当萎凋机层高、空间距、气路位置分别为0.1、0.1、1.496βm时,红茶萎凋机温度场性能最优,所建模型决定系数为0.968β3,调整后的决定系数为0.927β5,标准偏差为0.061,最优方案理论值和实际值分别为:0.951β9和0.909β6。CFD和RSM融合分析方法,适用于红茶萎凋机的性能参数优化。

关键词: 红茶, 萎凋, CFD, RSM, 参数优化

Abstract: In order to ascertain the influence of the structural parameters of the withering machine on withering performance, the numerical simulation analysis of withering environment was carried out by the fluid mechanics software. The temperature-integrated index after the dimensionless was used as the evaluation index of the withering performance and the response surface methodology (RSM) was used to optimize the three factors (the withering layer height x1, the withering machine and the withering room space x2, and the gas position x3) that affect withering quality. The result shows that the order of importance of each factor on the withering quality was as follows: gas path position, withering machine layer height, space distance. The best set for temperature field performance of the black tea withering machine were x1=10βcm, x2=10βcm, x3 =149.6βcm. The model’s R2=0.968β3, adjR2=0.927β5, the standard deviation was 0.061. The theoretical and actual values of the optimal scheme were: 0.951β9 and 0.909β6, respectively. The CFD and RSM fusion analysis method was suitable for optimizing the performance parameters of the black tea withering machine.

Key words: black tea, withering, CFD, RSM, parameter optimization

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