Numerical investigation on phosphine flow during fumigation of wheat in a Chinese horizontal warehouse

Q2 Engineering Engineering in Agriculture, Environment and Food Pub Date : 2019-07-01 DOI:10.1016/j.eaef.2019.02.005

Xi Chen , Guixiang Chen , Longfei Yue , Deqian Zheng , Haitao Wang , Minmin Jiang

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引用次数: 4

Abstract

The phosphine flow during fumigation of wheat in a Chinese horizontal warehouse is studied by computational fluid dynamics modeling. The Renormalization Group k-ε turbulence model is adopted to simulate the three-dimensional airflow field and the species transport model is used to calculate the species mixing. The phosphine concentrations in the warehouse with different leaky area positions during the fan-forced fumigation and the tablet fumigation are continuously predicted for 28.5 days. Also, the effects of the fumigation methods and the leaky area positions on the phosphine concentrations are discussed. The results reveal that the phosphine concentration in the tablet fumigation takes longer time to be uniform than that in the fan-forced fumigation. The maximum value of the phosphine concentration in the fan-forced fumigation is larger and appears earlier than that in the tablet fumigation. We also found that the fumigation methods have greater impact on the phosphine concentration than the leaky area positions in this study. And the impacts of the leaky area positions on the phosphine concentration could be further influenced by the fumigation methods.

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中国卧式仓库小麦熏蒸过程中磷化氢流动的数值研究

采用计算流体动力学模型研究了中国卧式仓库小麦熏蒸过程中磷化氢的流动。采用重整化群k-ε湍流模型模拟三维气流场，采用物种输运模型计算物种混合。连续预测风机强制熏蒸和片剂熏蒸过程中不同泄漏区位置仓库内磷化氢浓度28.5 d。并讨论了熏蒸方式和泄漏区位置对磷化氢浓度的影响。结果表明，片剂熏蒸比风机强制熏蒸需要更长的时间才能使磷化氢浓度达到均匀。风机强制熏蒸的磷化氢浓度最大值比片剂熏蒸更大，出现时间更早。在本研究中，我们还发现熏蒸方法对磷化氢浓度的影响大于泄漏区域位置。泄漏区位置对磷化氢浓度的影响还可进一步受到熏蒸方式的影响。

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来源期刊

Engineering in Agriculture, Environment and Food Engineering-Industrial and Manufacturing Engineering

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1.00

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期刊介绍： Engineering in Agriculture, Environment and Food (EAEF) is devoted to the advancement and dissemination of scientific and technical knowledge concerning agricultural machinery, tillage, terramechanics, precision farming, agricultural instrumentation, sensors, bio-robotics, systems automation, processing of agricultural products and foods, quality evaluation and food safety, waste treatment and management, environmental control, energy utilization agricultural systems engineering, bio-informatics, computer simulation, computational mechanics, farm work systems and mechanized cropping. It is an international English E-journal published and distributed by the Asian Agricultural and Biological Engineering Association (AABEA). Authors should submit the manuscript file written by MS Word through a web site. The manuscript must be approved by the author''s organization prior to submission if required. Contact the societies which you belong to, if you have any question on manuscript submission or on the Journal EAEF.