cfx中的cel和ccl有什么区别

cfx中的cel和ccl有什么区别

The CFX Command Language (CCL) is the internal communication and command language of ANSYS CFX. It is a simple language that can be used to create objects or perform actions in the post-processor. All CCL statements can be classified into one of three categories:
1.Object and parameter definitions, which are described in Object Creation and Deletion.
2.CCL actions, which are commands that perform a specific task (such as reading a session file) and which are described in Command Actions in the CFD-Post User's Guide.
3.Power Syntax programming, which uses the Perl programming
language to allow loops, logic, and custom macros (subroutines). Power
Syntax enables you to embed Perl commands into CCL to achieve powerful
quantitative post-processing. For details, see Power Syntax in ANSYS CFX.

CFX Expression Language (CEL) is an interpreted, declarative language that has been developed to enable CFX users to enhance their simulations without recourse to writing and linking separate external Fortran routines.
You can use CEL expressions anywhere a value is required forinput in ANSYS CFX.
CEL can be used to:
1.Define material properties that depend on other variables.
2.Specify complex boundary conditions.
3.Add terms to the solved equations.
You can also monitor the value of an expression during the solutionusing monitor points.

从以上描述可以看出，
1.CCL只能用于CFX的后处理中，而CEL可以用在CFX的任何地方。
2.CCL不仅允许修改比较复杂的参数表达式，而且允许加入perl命令语言（相似于c语言的编程语言），是一种针对CFX的较基础、较底层的命令语言。利用CCL语言可以实现更复杂的边界条件处理、循环、判断等等。
3.CEL语言是一种开放程度有限的CFX二次开发语言，仅仅允许较低级别的二次开发，主要用于复杂变量的定义、边界条件的指定等。