Ansys计算温度场操作流程.docx

Instruction of Ansys temperature field calculation Question 1: Consider an infinite (in one direction) plate with initial temperature T0. One end of the plate is exposed to the environment of which the temperature is Te (III type boundary condition). Analyze the temperature distribution in the plate during the period of 2000s.问题1：考虑一个方向无限长的平板，初始温度为T0，一段暴露在温度为Te的环境中，分析其在2000s内温度分布情况。Basic parameters基本物性参数Geometry几何：a=1 m, b=0.1 mMaterial材料：=54 W/moC, =7800 kg/m3, cp=465 J/kgoCLoads载荷：T0=0 oC, Te=1000 oC, h=50 W/m2oCJobname and directory settings设置文件名、存储路径Menu | File | Change JobnameMenu | File | Change DirectoryPreprocessing前处理(1) Define Element Type定义单元类型Preprocessor | Element Type | Add/Edit/DeleteAdd: Thermal Mass | Solid | Quad 4node 55(2) Set Material Properties设置材料属性Preprocessor | Material Props | Material ModelsThermal: Conductivity: Isotropic KXX=54Thermal: Density=7800Thermal: Specific Heat=465Modeling建模(1) Create Node 1建立节点1 Preprocessor | Modeling | Create | Nodes | In Active CSNo.: 1, (x, y, z) = (0,0,0)(2) Create Node 12建立节点12Preprocessor | Modeling | Create | Nodes | In Active CSNo.: 2, (x, y, z) = (0,1,0)(3) Fill Between Node 1 and 12在节点1，12间填充其余节点Preprocessor | Modeling | Create | Nodes | Fill Between NdsNumber of nodes to fill: 10Spacing ratio: 1(均匀网格)(4) Create Node 1324 by copying复制生成节点1324Preprocessor | Modeling | Copy | Nodes | CopyPick All选择所有节点Total number of copies: 2复制2份（包含原先的1份）X-offset: 0.1设置X方向偏移量(5) Create Element 1生成单元1Preprocessor | Modeling | Create | Elements | Auto Numbered | Thru NodesSelect 1, 13, 14, 2(with mouse)(6) Copy Element 210 by copying复制生成其余单元Preprocessor | Modeling | Copy | Elements | Auto NumberedPick All选择所有单元Total number of copies: 11复制11份（包含原先的1份）Node number increment: 1设置节点增量Applying Loads加载（设置边界条件和初始条件）(1) Apply convention loads on Node 12 and 24在节点12，24上加对流载荷Preprocessor | Loads | Define Loads | Apply | Thermal | Convection | On NodesPick 12, 24VALI Film coefficient: 50换热系数VAL2L Bulk temperature: 1000环境温度(2) Set initial temperature(uniform temperature)设置初始条件（均匀温度）Solution | Define Loads | Settings | Uniform TempUniform Temperature: 0Solution求解(1) Set Analysis Type as Transient设置分析类型为瞬态分析Solution | Analysis Type | New AnalysisTransient(2) Set solution controls设置分析控制参数Solution | Analysis Type | Soln Controls”Transient” Label: Stepped Loading”Basic” Label: Time at end of loadstep: 10000; Automatic time stepping: on; Time increment: 10; Frequency: Write every substep(3) Solve求解Solution | Solve | Current LSViewing Results查看结果(1) TimeHist Postpro时间历程后处理器Add data添加数据: TimeHist Postpro | Add data: Nodal Solution: DOF Solution: Nodal Temperature: Variable Name: T1; Node 1Variable Name: T5; Node 5Variable Name: T9; Node 9Variable Name: T11; Node 11(2) List/Graph列表/作图Select the variables选择变量:List data/ Graph data(3) Save image保存图片Menu | PlotCtrls | Capture Image: File | Save as(4) General Postpro通用后处理器Select the data of certain time选择某一时刻的数据:General Postpro | Read Results | By pickPlot the contour map of temperature distribution绘制该时刻温度分布等值线图:General Postpro | Plot Results | Contour Plot | Nodal Solu | Nodal Solution: DOF Solution: Temperature(5) Save image保存图片Menu | PlotCtrls | Capture Image: File | Save as(6) Animate生成动画Menu | PlotCtrls | Animate | Over TimeNumber of animation frames: 100Question 2: Consider a solid cylinder with initial temperature T0. The top surface of the cylinder is exposed to the environment of which the temperature is Te (III type boundary condition) and the other surfaces are heat insulation (II type boundary condition). Analyze the temperature distribution in the cylinder during the period of 1000s.问题2：考虑一个初始温度为T0的圆柱体，一段暴露在温度为Te的环境中，其余界面视为绝热，分析其在1000s内温度分布情况。Basic parameters基本物性参数Geometry几何：r=0.025 m, h=0.05 mMaterial材料：=25 W/moC, =7800 kg/m3, cp=500 J/kgoCLoads载荷：T0=25 oC, Te=100 oC, h=100 W/m2oCJobname and directory settings设置文件名、存储路径Menu | File | Change JobnameMenu | File | Change DirectoryPreprocessing前处理(1) Define Element Type定义单元类型Preprocessor | Element Type | Add/Edit/DeleteThermal Mass: Solid : Brick 8node 70(2) Set Material Properties设置材料属性Preprocessor | Material Props | Material ModelsThermal: Conductivity: Isotropic KXX=25Thermal: Density=7800Thermal: Specific Heat=500Modeling建模(1) Create the cylinder model建立圆柱体模型Preprocessor | Modeling | Create | Volumes | Cylinder | Solid CylinderWP X: 0WP Y: 0Radius: 0.025Depth: 0.05(2) Adjust the view调整视图Right Toolbar | Isometric View(3) Mesh划分网格Preprocessor | Meshing | MeshToolSmartSize(optional): Mesh: select the cylinder选择圆柱体Applying Loads加载(1) Apply convention loads on the top在上表面加对流载荷Preprocessor | Loads | Define Loads | Apply | Thermal | Convection | On AreasPick the top surface by mouse选择上表面(用鼠标)VALI Film coefficient: 100换热系数VAL2L Bulk temperature: 100环境温度(2) Set initial temperature(uniform temperature)设置初始条件（均匀温度）Solution | Define Loads | Settings | Uniform TempUniform Temperature: 25Solution求解(1) Set Analysis Type as Transient设置分析类型为瞬态分析Solution | Analysis Type | New AnalysisTransient(2) Set solution controls设置分析控制参数Solution | Analysis Type | Soln Controls”Transient” Label: Stepped Loading”Basic”Label: Time at end of loadstep: 1000; Automatic time stepping: on; Time increment: 10; Frequency: Write every substep(3) Solve求解Solution | Solve | Current LSViewing Results查看结果(1) General Postpro通用后处理器Select the data of certain time选择某一时刻的数据:General Postpro | Read Results | By pickPlot the contour map of temper