As subroutines in commercial software, APDL (ANSYS Parametric Design Language) provides a strong tool for software development. APDL is not only merely a language, but a language based on the applications of ANSYS. In such an environment the software development can be done based not only a language and library, but also on some applications. With ANSYS/FLOTRAN 5.7 enhanced with ALE and Interpolation, a rotating moving boundary calculation is designed with APDL. The APDL flow chart will be listed for general reference of rotating moving boundary analysis. The new approach is validated in 2 models: the flow around a rotating square and the flow around a rotating fan.