V8 was released in 2016. Flowmaster helped to pioneer software for virtual hybrid electric vehicles with its integration into the USA-based NREL ‘ADVISOR’ program that sought to simulate a complete vehicle cooling system in 2000. This idea has evolved into the concept of “digital twins” which today is a major driving force in many industries. Flowmaster has been added to over the years including the application of the Method of Characteristics to compressible pipe flow systems, a new approach to the modeling of AC components, the first commercial co-simulation link between 1D and 3D CFD software and control models were added in 1999. Industry specific variants of Flowmaster for Automotive, Aerospace, Power and Energy and Gas Turbines and were released from 2007 – 2016. After Flowmaster Ltd was acquired by Mentor Graphics Corporation in 2012 the software has been enhanced numerically and upgraded such that FloMASTER V8 was launched in December 2016 with Organic Rankine Cycle enhancements for Waste Heat Recovery predictions, a new user interface ‘Launchpad’ experience, plus a new integrated 1D-3D CFD workflow that allows for accelerated Simulation Based Characterization (SBC) of multi-arm 3D components inside the 1D systems simulation environment. Product Flowmaster is a general purpose 1D computational fluid dynamics (CFD) code for modeling and analysis of fluid mechanics in complex piping and ducting systems of any scale. It is a thermo-fluid systems engineering package that has the ability to simulate flows of gases and liquids, heat and mass transfer, moving bodies, two-phase flows and fluid-structure interaction (FSI) through computational modeling algorithms. It uses a Method of Characteristics solver that allows it to handle accurately fluid transients in complex systems and systems-of-systems such as pressure surge and ‘water hammer’. It also has an advanced gas turbine secondary air modeling capability. Technology FloMASTER simulates 1D thermo-fluid systems and complex systems-of-systems through: Empirical Data: The code is underpinned by D.S. Miller’s 'Internal Flow Systems' component and fluids data plus Wylie and Streeter’s 'Fluid Transients in Systems' that both allow for simulations to be initiated before detailed design information exists. The 1D model can then evolve according to the user’s requirements. Solver: Steady state analysis for pressure drop, flow and heat balance calculations to the same model can then be used for dynamic simulations such as pressure surge and water hammer behavior. The solver has embedded ‘parametrics’ for design iterations, and a SQL relational database to store and track all