对于常见的工程应用来说，计算的工况很多，尤其优化工作，少则几百，多则上千，面对如此之多的case文件要写，假如按照一个一个的读写的话，相信你一定会为这么机械的工作烦躁，甚至影响今后好几天的心情，那么有什么简便一些的方法呢？答案是肯定的。那就是采用fluent的journal文件。
首先打开fluent软件，在file/write/start journal，见下图：
选择保存文件名*.journal后（看你自己怎么设置文件名），我一般按照这一组的类型来命名；
这样， journal文件就开始记录你以后的每一步操作。
按照原先设置模型参数一样，一步步来就是了。
等你操作完成后，原先的”start journal“现在已经是”stop journal“，所以你只需要选择”stop journal“就可以了。
此时，用写字板打开看看就可以看到如下的一些记录命令。
(cx-gui-do cx-activate-item "MenuBar*ReadSubMenu*Case...")
(cx-gui-do cx-activate-item "Warning*OK")
(cx-gui-do cx-set-text-entry "Select File*Text" "fluent.msh")
(cx-gui-do cx-activate-item "Select File*OK")
(cx-gui-do cx-activate-item "MenuBar*GridMenu*Check")
(cx-gui-do cx-activate-item "MenuBar*GridMenu*Smooth/Swap...")
(cx-gui-do cx-activate-item "Smooth/Swap Grid*PanelButtons*PushButton1(OK)")
(cx-gui-do cx-activate-item "Smooth/Swap Grid*PanelButtons*PushButton1(Swap)")
(cx-gui-do cx-activate-item "Smooth/Swap Grid*PanelButtons*PushButton2(Cancel)")
(cx-gui-do cx-activate-item "MenuBar*ModelsSubMenu*Solver...")
(cx-gui-do cx-activate-item "Solver*PanelButtons*PushButton1(OK)")
(cx-gui-do cx-activate-item "MenuBar*ModelsSubMenu*Viscous...")
(cx-gui-do cx-activate-item "Viscous Model*PanelButtons*PushButton1(OK)")
(cx-gui-do cx-activate-item "MenuBar*DefineMenu*Boundary Conditions...")
(cx-gui-do cx-activate-item "Boundary Conditions*PanelButtons*PushButton1(OK)")
(cx-gui-do cx-set-real-entry-list "velocity-inlet-10-1*Frame4*Frame3(Momentum)*Table1*Table4*RealEntry2(Velocity Magnitude)" '( 10))
(cx-gui-do cx-activate-item "velocity-inlet-10-1*PanelButtons*PushButton1(OK)")
(cx-gui-do cx-activate-item "Boundary Conditions*PanelButtons*PushButton2(Cancel)")
(cx-gui-do cx-activate-item "MenuBar*ControlsSubMenu*Solution...")
(cx-gui-do cx-set-list-selections "Solution Controls*Table1*Frame2(Pressure-Velocity Coupling)*Table2(Pressure-Velocity Coupling)*DropDownList1" '( 1))
(cx-gui-do cx-activate-item "Solution Controls*Table1*Frame2(Pressure-Velocity Coupling)*Table2(Pressure-Velocity Coupling)*DropDownList1")
(cx-gui-do cx-set-list-selections "Solution Controls*Table2*Frame1(Discretization)*Table1(Discretization)*DropDownList1(Pressure)" '( 3))
(cx-gui-do cx-activate-item "Solution Controls*Table2*Frame1(Discretization)*Table1(Discretization)*DropDownList1(Pressure)")
(cx-gui-do cx-set-list-selections "Solution Controls*Table2*Frame1(Discretization)*Table1(Discretization)*DropDownList2(Momentum)" '( 1))
(cx-gui-do cx-activate-item "Solution Controls*Table2*Frame1(Discretization)*Table1(Discretization)*DropDownList2(Momentum)")
(cx-gui-do cx-set-list-selections "Solution Controls*Table2*Frame1(Discretization)*Table1(Discretization)*DropDownList3(Turbulent Kinetic Energy)" '( 1))
(cx-gui-do cx-activate-item "Solution Controls*Table2*Frame1(Discretization)*Table1(Discretization)*DropDownList3(Turbulent Kinetic Energy)")
(cx-gui-do cx-set-list-selections "Solution Controls*Table2*Frame1(Discretization)*Table1(Discretization)*DropDownList4(Turbulent Dissipation Rate)" '( 1))
(cx-gui-do cx-activate-item "Solution Controls*Table2*Frame1(Discretization)*Table1(Discretization)*DropDownList4(Turbulent Dissipation Rate)")
(cx-gui-do cx-activate-item "Solution Controls*PanelButtons*PushButton1(OK)")
(cx-gui-do cx-activate-item "MenuBar*MonitorsSubMenu*Residual...")
(cx-gui-do cx-set-real-entry-list "Residual Monitors*Table2*RealEntry11" '( 1e-005))
(cx-gui-do cx-set-toggle-button "Residual Monitors*Table1*Frame1(Options)*ToggleBox1(Options)*CheckButton2(Plot)" #f)
(cx-gui-do cx-activate-item "Residual Monitors*Table1*Frame1(Options)*ToggleBox1(Options)*CheckButton2(Plot)")
(cx-gui-do cx-set-real-entry-list "Residual Monitors*Table2*RealEntry17" '( 1e-005))
(cx-gui-do cx-set-real-entry-list "Residual Monitors*Table2*RealEntry23" '( 1e-005))
(cx-gui-do cx-set-real-entry-list "Residual Monitors*Table2*RealEntry29" '( 1e-005))
(cx-gui-do cx-set-real-entry-list "Residual Monitors*Table2*RealEntry35" '( 1e-005))
(cx-gui-do cx-set-real-entry-list "Residual Monitors*Table2*RealEntry41" '( 1e-005))
(cx-gui-do cx-activate-item "Residual Monitors*PanelButtons*PushButton1(OK)")
(cx-gui-do cx-activate-item "MenuBar*WriteSubMenu*Case...")
(cx-gui-do cx-set-text-entry "Select File*Text" "fluent.cas")
(cx-gui-do cx-activate-item "Select File*OK")
(cx-gui-do cx-activate-item "Warning*OK")
这样一个case文件就写完了，你后面需要做的就是替换"fluent.msh"与"fluent.cas“为你自己的文件名就行。复制粘贴写好的一个case的journal文件，替换成下一个mesh文件名；值得注意的是，模型文件中的边界数量要一致，否则会出现错误，因为GUI语言是按照fluent里边界的ID号来识别的。
基本上，这样写case文件还是很省事的，你到时就可以在一边听着音乐，一边看着它自动编写！