如何透過批次模擬加速3D模型建立

在HFSS建立3D模型時，可以明顯感覺得出來當模型數量越多時，執行速度會越來越慢。舉例來說，利用雙迴圈的python代碼產生20x20的圓柱陣列(如圖一)花了約74秒的時間。更複雜的結構十多分鐘跑不掉。有沒有方法可以加速3D模型的產生？其實是有的，透過在命令行執行腳本，由於不需要打開AEDT視窗，省去了模型渲染的時間，時間大幅縮短到0.8秒，快了足足有92倍之多。以下是程式碼：

(圖一) 20x20 圓柱陣列

run.bat

SET PATH=%PATH%;C:\Program Files\AnsysEM\AnsysEM20.2\Win64
ansysedt.exe -features=beta -ng -RunScriptAndExit .\createCylinder.py

createCylinder.py

import ScriptEnv
ScriptEnv.Initialize("Ansoft.ElectronicsDesktop")
oDesktop.RestoreWindow()
oProject = oDesktop.NewProject()
oProject.InsertDesign("HFSS", "HFSSDesign1", "DrivenModal", "")
oDesign = oProject.SetActiveDesign("HFSSDesign1")
oEditor = oDesign.SetActiveEditor("3D Modeler")
for i in range(20):
    for j in range(20):
        oEditor.CreateCylinder(
            [
                "NAME:CylinderParameters",
                "XCenter:="       , "{}mm".format(i),
                "YCenter:="       , "{}mm".format(j),
                "ZCenter:="       , "0mm",
                "Radius:="    , "0.2mm",
                "Height:="    , "0.8mm",
                "WhichAxis:="     , "Z",
                "NumSides:="      , "0"
            ], 
            [
                "NAME:Attributes",
                "Name:="      , "Cylinder1",
                "Flags:="     , "",
                "Color:="     , "(143 175 143)",
                "Transparency:="   , 0,
                "PartCoordinateSystem:=", "Global",
                "UDMId:="     , "",
                "MaterialValue:="  , "\"vacuum\"",
                "SurfaceMaterialValue:=", "\"\"",
                "SolveInside:="       , True,
                "ShellElement:="   , False,
                "ShellElementThickness:=", "0mm",
                "IsMaterialEditable:=" , True,
                "UseMaterialAppearance:=", False,
                "IsLightweight:="  , False
            ])
oProject.SaveAs("D:\\demo\\case3.aedt", True)
oDesktop.CloseProject("case3")

在2020R1時，這個功能仍是beta版，所以在主程式 ansysedt.exe 後面加上-features=beta。 -ng指的是non-graphic模式，因此不會打開AEDT介面。-RunScriptAndExit會在執行python腳本之後結束工作並釋放license。如果要在Python當中執行，可以參考下列代碼：

import os
import subprocess
os.environ["PATH"] = 'C:/Program Files/AnsysEM/AnsysEM20.1/Win64'
subprocess.check_call(['ansysedt.exe', '-features=beta', '-ng', '-RunScriptAndExit', 'd:/demo2/test.py'])