We are actively developing the code. The picking function has been re-written to color picking method instead of mathematical picking and deprecated method with projection. Currently, the function would be applied to all geometrical primitives.
We released the alpha version of GasDynCalc. The code is based on 1D calculation and fully free to use. Please, use it carefully as it is the alpha version. Let us know if you have any questions or ideas how to improve it. You might download it here.
GasDynCalc is still on developing stage. We integrated GUI for two modes: stand alone and network. The stand alone mode is designed to calculate separate parts, such as duct, diffuser, heat exchanger, etc. The network mode is created to model the network of different devices.
Currently, we are developing two codes: CFxD and GasDynCalc. We do not actively develop GTECalc. It has been tested and released. The basic functions are integrated and it is free to use. Since there is no any comments from users we do not have the plans to integrate advanced features.