在dealvm虚拟系统上安装了openfoam4.0（link），按照user guider中的 tutorial1 : 2.1   Lid-driven cavity flow，一步一步地操作。第1步就出错了。

在terminal中输入blockMesh后，出现blockMesh: command not found的错误。

排查原因：

系统环境变量列表中还没有OpenFOAM的相关命令。

修正方法：

参照官网的方法，添加环境变量。link

摘录如下：

User Configuration

In order to use the installed OpenFOAM package, complete the following

1. Open the .bashrc file in the user’s home directory in an editor, e.g. by typing in a terminal window (note the dot)

   gedit ~/.bashrc

   
   

2. At the bottom of that file, add the following line (see Note 1 below) and save the file

   source /opt/openfoam4/etc/bashrc

   
   

3. Open a new terminal window (see Note 2 below) and test that the simpleFoam application, from the OpenFOAM package, is working by typing

   simpleFoam -help

   
   

4. A “Usage” message should appear. Your installation and user configuration is complete.

Note 1: If a similar line has already been added to the user’s .bashrc file, e.g. for a previous version of OpenFOAM, then the line should be deleted or, alternatively, commented out by inserting a # at the beginning of the line.
Note 2: If a user wishes to execute simpleFoam in the same terminal window, they must first register the change to the .bashrc file by typing at the terminal prompt (note the dots): source $HOME/.bashrc