热风干燥烘房气流速度场均匀性优化

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英文篇名：Optimization of Airflow Velocity Field Uniformity in Hot Air Drying Kiln 作者：张伟 ; 严平 英文作者：ZHANG Wei;YAN Ping;School of Mechanical and Automotive Engineering,Shanghai University of Engineering Science;School of Air Transportation/Flying,Shanghai University of Engineering Science; 关键词：干燥烘房 ; 均匀性 ; 引导送风罩 ; FLUENT软件 ; 气流均方差 英文关键词：drying kiln;;uniformity;;guide air cover;;FLUENT;;airflow mean variance 中文刊名：QGJX 英文刊名：Light Industry Machinery 机构：上海工程技术大学机械与汽车工程学院;上海工程技术大学航空运输学院; 出版日期：2019-01-24 出版单位：轻工机械 年：2019 期：v.37;No.157 基金：上海工程技术大学研究生科研创新项目(E3-0903-17-01008) 语种：中文; 页：QGJX201901019 页数：5 CN：01 ISSN：33-1180/TH 分类号：89-93

摘要

针对常规干燥烘房存在气流速度场不均匀,导致木材干燥不均、干燥效果差的问题,课题组在常规干燥烘房的基础上,设置风机引导送风罩,利用FLUENT对设置3种规格送风罩的烘房进行数值模拟,结果表明600 mm×300 mm矩形出风口的引导送风罩可以使气流速度场均匀性达到最佳;将其与常规干燥烘房进行对比,结果表明设置600 mm×300mm引导送风罩的干燥烘房能使气流速度更加均匀,气流均方差降低了2. 5%,变异系数降低了4. 0%。本研究可提高木材干燥的均匀性。
        Conventional drying kiln has uneven airflow velocity field,which leads to uneven drying of wood and poor drying effect. Based on the conventional drying,guide air cover was set up. FLUENT was used to numerically simulate the drying kiln with three kinds of guide air cover,it was concluded that the guide air cover of the 600 mm × 300 mm rectangular air outlet could optimize the uniformity of the airflow velocity field. Compared with the conventional drying kiln,the results show that the drying kiln with 600 mm × 300 mm guide air cover can make the airflow speed more uniform,the airflow mean variance is reduced by 2. 5%,and the coefficient of variation is reduced by 4. 0%,which can significantly improve the uniformity of wood drying quality.

引文

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