史上Fluent最详细操作步骤一看就懂

所需积分/C币:40 2019-02-25 11:35:51 6.38MB PDF

史上Fluent最详细操作步骤一看就懂,最简短的过程演示,为便于阅读概理解使用,特打上标签。
LLFLTEHT [zd, pbns, Iaal a E1+分4fn5 oye fl4 中 bor. rara1lBa Reading E:\files\car1.Ash" 7599 nodes 86 xed vall faces zone 3 37 mixed wall faces, zone I4 1g ixed wall faces, zone 5, 23 ixed wall faces, zone T. 17 mixed wall faces, zone 8 37 ixed wall faces, zone 9. 1目 mixed wa11 Faces,zone1目 5 ixed wall faces, zone 11 30 nixed wall faces, zone 12 29 niixed outflow Faces, zone 13 29 ixed uelocity-inlet faces, zone 14 17 mixed wall faces, zone 15 22103 nixed interior faces. zone 17 1484 triangular cells, zone 2. Building Irid q aterials interface domains default-interio ca1-千ace air-inlet air-outlet arl-top car1-backl carl-back2 arl-bottom cap2-fac car2-top car2-backt car2-bottom wall Fluid shell conduction zones. docinco one 其中包括节点数7590等,最后的Done表示读入网格文件成功。 2网格检査: 操作如下图所示: CL FLUENT [2d, pbns, lan] 回区 Eile Grid Detine Solve Adapt Surface Display Flot Report FaralelHelp Info s Faces, zone 3 Faces,z0ne4。 Polyhedra Faces, zone 5. Faces, zone 0 Mer ge Faces. zone 7 Separate Faces. zone 8 F us日,, faces, zone 9 日 ity -inlet faces, zone 10 Lor faces. zone 12 Sur face Mesh cells. zone 2 Re Buil Scal Translate. Rtat。 m default-interior air-inlet air-outlet car-top FLUENT在信息反馈窗口显示如下信息: www.docin.com AFLUERT [2d, pbns,Inal Eils Grid Define Solve Adapt Surfare Display Elet eport arallel Helr car2-top car2-hackl car2-back2 car2-hottom wall fluid shell conduction zones Done Grid check Donain extents. x-cOordinate 1.目B目e+ y-coordinate. min (m) =-1.目+g dBz. I maxn)=2.e+B目2 ma〔n)=1. 55515e+2 Volune statistics ininum volume(n3):6.771845e-目目1 naxinum volume (03):2.648279e+001 total volume (n3):5.B62500e+984 Face area statistics mininum Face area (m2): 1.1206250+058 naxinum face area (m2):8-60419ge+090 Checking nunber of nodes per cell Checking nunber of faces per cell. Checking thread pointers Checking nunber of cells per face Checking Face cells Checking bridge Faces Checking right-handed cells Checking face handedness Checking face node order Checking element type consistency Checking boundary types: Checking face pairs Checking periodic boundaries Checking node count Checking nosolve cell count. Checking nosolve face count Checking face childre Checking cell children Checking storage docIn co 注意:(1)网格检查列出了X,Y的最小和最大值 (2)网格检査还将报告出网格的其他特性,比如单元的最大体积和 最小体积、最大面积和最小面积等: (3)网格检查还会报告出有关网格的任何错误,特别是要求确保最 小体积不能是负值,否则 FLUENT无法进行计算 3.平滑(和交换)网格 这一步是为确保网格质量的操作。 操作: : Grid Smooth/ Swap 打开“ Smooth/ Swap grid”对话框如图所示: Smooth/Swap Grid Smooth Swap Into Method Number Swapped skewness s Minimum Skewness Number Visited s。4 Number of iterations Smooth Swap CloseHelp (1)点击 Smooth按钮,再点击Swap,重复上述操作,直到 FLUENT 报告没有需要交换的面为止。如图所示: No nodes moved, smoothing complete Done Number faces swapped: g Number faces visited: 22183 (2)点击 Close按钮关闭对话框 注意:这一功能对于三角形单元来说尤为重要。 com 4确定长度单位 操作如下图所示: CL FLUENT [2d, pbns, lan] 回区 Eile Grid Detine Solve Adapt Surface Display Flot Report Parallel Help Cheele Grig Into Don polyhedra Mer ge n)=-1.6656e日B2,ma(m)=1. 55555Ue;目2 9 separate (n)=-1-505055e+501, max (m)=1-055053e+002 F us日,, :3.527547e-81 日 :8.851弱998 3):2.138888e+894 Fad Surface Mesh Re 【n2):8.73179-881 n2):4701773e·0 Che scali nodes per cell ch∈ Trans1ate. Faces per cell Che R。tat nters che lls per fi Che Smooth/Swap. Checking bridge faces. Checking right-handed cells. Checking face handedness Checking face node order 打开“ Scale grid”对话框如图所示: Scale Grid Scale factors Unit Conversion Grid Was Created In m Change Length Units irl. com Domain Extents min回m-190 ma×回m]29 Ymin (mJ-100 Ymax网m]1g日 Scale UnscaleClose Help (1)在单位转换( Units Conversion)栏中的( Grid Was Created In) 网格长度单位右侧下拉列表中选择m; (2)看区域的范围是否正确,如果不正确,可以在 Scale factors 的X和Y中分别输入值10,然后点击“ Scale”或“ Unscale” (3)点击 Scale; (4)点击C1ose关闭对话框。 第3步:建立求解模型 保持 Solver(求解器)默认设置不变 操作: Define→ Models→ Solver. 打开“ Solver”对话框如图所示 ioer Formulation 4 Pressure Based c Implicit C Density Based C Explicit Space Time C 2D Stea C Axisymmetric Unsteady C Axisymmetric Swirl 30 Yelocity Formulation Absolute Relative om Gradient Option Porous Formulation F Green-Gauss Cell Based Superficial Velocity Green-Gauss Node BasedCPhysical Velocity Least Squares Cell Based OK ancel hel 保持默认设置,点击OK确认 第4步:设置流体的物理属性 操作: Define→ Material. 打开“ Materials”对话框如图所示: nter⊥al器 Name Material Type Order Materials By 孑ir fluid K. Name Chermical formula Chemical formula Fluent Fluid materials Fluent Database∴ Mixture User-Defined Database Properties Density [kg/m 3 constant Edit 225 Viscosity kg/m-sI constant Edit 1.7894e Changecreate Delete Close Help 缺省流体就是空气“air”,我们不做更改。点击“ Close”,关闭 流体属性设置对话框。 第5步:设置边界条件 这是相当重要的一项, ocin. com 操作如下图所示: C FLUENT [2d, pbns, lan] File Gria Define Solve Adapt Spr face Display nlot Report Parallel Help Checkin Models Checkin Materials Done Pharas moved 12 Operating Conditions nodes, most skewness improvement 6. 137101, 3 rena No nodes te Done Boundary Conditi No nodes Periodic Conditi 已 Done Gr1 d interfe但e露,。 Number f Dynamie Mesh Number f Mixing P1如ns No nodes Turbo Tepalagy Done nections Number千 DIF RayT Number cUstom Field Functions No nodes Profiles te Done Int露,: Number User-Defined Number千 dLEs US⊥Leu。IzD4 打开“ Boundary Conditions”对话框如下图所示: Boundary Conditions onP air-inlet sI inlet-vent air outlet intake-fan carl-back1 interface carT-back2 mass-Mlow-inlet n. com car1-bottom outflow carl-face outlet vent car l-top pressure-far-field car2-backI pressure-inlet car2-back2 pressure-outlet car 2-bottom symmetr car2-face velocity-inlet car2-to wall D set.Copy… Close Help 我们需要仔细检査 Gambit中设定的边界类型,看是否正确。本 例中除了air- inlet需要设定空气进入的速度以外,其他的不用更改 设置。如下图所示,在Zone中选择air- inlet,在Type中自动显示

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