scSTREAM .Thermo-fluid (CFD) software has serviced the electronics and architectural industries for thirty years. The ever-evolving software programs are characterized by its overwhelmingly user-friendly interfaces and high-speed processing. HeatDesigner is developed base around the fundamental feature of scSTREAM and is specially designed for the thermal application of electronics products. HeatDesigner provides physical functions required especially for thermal design with its simple interfaces and robust computing performance, as a result scSTREAM & HeatDesigner one of the best High-end CFD Softwares within the word