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首页> 外文会议>2004 TAPPI paper summit, spring technical and international environmental conference >3D Simulation of Layer Mixing in a Three-Layer Stratified Forming Headbox
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3D Simulation of Layer Mixing in a Three-Layer Stratified Forming Headbox

机译：三层分层成型流浆箱中层混合的3D模拟

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摘要

We used a commercially available software called FLUENT to simulate and visualize turbulence in a three-layeredrnstratified headbox of a paper machine in a three dimensional space. The three dimensional information, in terms ofrncolorful contours of velocity profiles, turbulent kinetic energy, and energy dissipation rates, is used to optimize thernvane thickness, nozzle angle, and vane length. The results show that it is possible to reduce the vane thickness torndecrease the turbulence intensity at the area of layer mixing and to increase the angle of the nozzle to compensaternfor the turbulence intensity reduction, either by increasing the turbulence area or the area of layer mixing. In otherrnwords, we may control the turbulence intensity and layer mixing areas by adjusting the vane thickness and nozzlernangle.
机译：我们使用了称为FLUENT的市售软件来模拟和可视化三维空间中造纸机的三层分层流浆箱中的湍流。根据速度轮廓的彩色轮廓，湍动能和能量耗散率，三维信息用于优化叶片厚度，喷嘴角度和叶片长度。结果表明，可以通过增加湍流面积或层混合面积来减小叶片厚度，从而降低层混合区域的湍流强度，并增加喷嘴角度以补偿湍流强度的降低。换句话说，我们可以通过调节叶片厚度和喷嘴角度来控制湍流强度和层混合区域。

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