孟兆新　于彪　李尚　陈广元

摘要：为构建木材干燥窑内部循环风速和温度合理分布，采用二维数值模拟方法，利用Fluent软件对试验型小型干燥窑进行仿真模拟，对比安装导流板前后干燥窑内温度和分布情况。木材干燥窑的设计，风速、温度分布是关键问题。首先利用ICEM CFD软件对结构简化的试验型小型干燥窑进行参数化建模，将简化的模型进行网格划分，利用Fluent软件对木材干燥窑内的流动与传热耦合环境进行数值模拟，得出风速分布云图和温度分布云图，研究干燥窑内热流耦合系统，得出其内部速度和温度的具体状态，通过导流板安裝前后数值对比，找到导流板合理性的参数。采用二维数值的模拟方法，不能代表实际干燥窑工作状况，具有一定的局限性。

关键词：木材干燥窑；导流板；热流耦合；数值模拟

中图分类号：S 782.3文献标识码：A文章编号：1001-005X（2015）01-0049-05

Calculation of Temperature and Wind Speed Distribution in

Wood Drying Kiln Based on the Heat Flow Coupling

Meng Zhaoxin1，Yu Biao1，Li Shang1，Chen Guangyuan2

（1.College of Mechanical and Electrical Engineering，Northeast Forestry University，Harbin 150040；

2.College of Material Science and Engineering，Northeast Forestry University，Harbin 150040）

Abstract：To build reasonable circulation wind speed and temperature distribution inside the wood drying kiln，the 2d numerical simulation method was used and Fluent software was used to simulate the experimental small drying kilns and the changes of temperature and distribution before and after installing the guide plate were compared.The design of the wood drying kiln，wind speed and the temperature distribution are the key problems.First，the parameters of the experimental small drying kiln with simplified structure were modeled with ICEM CFD，and Fluent software was used for numerical simulation of flow and heat transfer coupling in the wood drying kiln environment.Then the velocity contour and temperature contour were obtained.Through the heat flow coupling system，the specific status of inner velocity and temperature can be obtained.By numerical comparison before and after the installation of guide plate，the reasonable parameters of guide plate can be determined.It is noted that 2d numerical simulation method does not represent the actual drying kiln working condition，therefore it has certain limitations.

Keywords： wood drying kiln；guide plate；heat and flow coupling；numerical simulation

收稿日期：2014-12-05

基金项目：黑龙江省自然科学基金资助项目（C201238）

第一作者简介：孟兆新，博士，教授。研究方向：干燥窑耦合分析。Email：349325368@qq.com

引文格式：孟兆新，于彪，李尚，等.基于热流耦合的木材干燥窑风速温度分布解算[J].森林工程，2015，31（1）：49-53.木材干燥窑是通过通风和加热设备来控制干燥窑内部的温度、湿度及气流速度，利用窑内空气的流动和传热来完成对木材的干燥[1]。在木材干燥过程中，风速、温度分布是最关键问题，干燥窑的结构对木材干燥过程有极大的影响，合理的干燥窑结构对提高木材利用率、降低能耗，提升木材干燥质量有重要意义。……