阳光精品论坛 >> 『 CFD 专栏 』 >> 使用CFD-View的 "Extra Variable" 功能

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even2004      信息：  来自：未填  发贴：1239 贴  积分：244 点 货币：5814 阳光币 注册时间：2008/12/31  资料 好友 消息 引用回复 选择字号91011121415161820253050 使用CFD-View的 "Extra Variable" 功能 Using the "Extra Variable" in CFD-VIEW In CFD-VIEW, the Extra Variable list that appears in the Attribute toolbar is used for different purposes depending on the object type. If you are interested in knowing more about this feature, please read on. For spray visualization, the Extra Variable is used to scale the droplet size. For example, consider an evaporating spray application in a combustor. If we wish to color the spray droplet with the temperature variable and scale the size of the droplet as it gets smaller due to evaporation, the following steps should be performed. Pick the spray object in the objects list. Select the variable T from the color variable list. The spray droplet shows temperature variation. From the Extra Variable list, select the variable Diameter. Clicking the Maximize icon will scale the droplet size to the largest value for the selected spray object The above steps are shown graphically in figures 1 through 3. Step 1 Figure 1.  Spray object in the object list Step 2 Figure 2.  Color variable list with Temperature selected Step 3 Figure 3.  Extra variable list with Diameter selected Figure 4.  Spray particles colored by Temperature and extra variable set to Size (outer surfaces are transparent) The above procedure can be applied to any data that is displayed as points. Another application for the extra variable is in drawing stream traces as ribbons. The stream trace determines an angle that provides information about the swirl of a flow field. The twist of the ribbon can be tied to a variable called Angle in the extra variable list, which is proportional to the swirl in the flow field, as depicted in figures 5 and 6. Figure 5.  Extra variable set to Angle to show twist in the velocity field Figure 6.  Stream trace (shown as a ribbon) through the model 编辑 |  发表于 2009/07/03/09:50  |  1 层  进入评分

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阳光精品论坛 >> 『 CFD 专栏 』 >> 使用CFD-View的 "Extra Variable" 功能

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