目的 从5种不同的涂布气悬浮烘箱腔体中，选出性能最佳的腔体结构方案。方法 通过对5种气悬浮烘箱腔体三维建模，应用Ansys软件的Fluent模块，设定5种模型实际使用时的边界条件，模拟5种烘箱的工作情况。结果 借助设定的辅助平面、辅助线段，得到了5种烘箱工作时的腔体内部热风轨迹图、烘箱不同位置的风速等高线图。结论 通过比较模拟结果，确定了均风导流隔板型烘箱腔体的工作效果优于其他烘箱结构。

The work aims to select the cavity structure scheme with the optimal performances from the five different cavities of flotation dryer with coated web drying. Five cavities of flotation dryer were modeled by 3D software, and the boundary conditions of five kinds of models were set with Fluent module of Ansys to simulate the working conditions of them. By means of the auxiliary planes and auxiliary lines, the hot air trajectory map inside the cavity and the wind speed contour map at different positions of the dryer when five dryers were working were obtained. By comparing the simulation results, flotation dryer with balanced wind diversion is better than other dryer structures.