The modelling of hydrogen isotope transfer phenomena, in particular of tritium, is a historic milestone in nuclear fusion technology. Tritium is a reactant in the fusion reaction and therefore of great interest. It presents two major problems in operation, however: it is a radioactive isotope and it is highly permeable. As a result, it is especially important to monitor and control it. Now, a hydrogen isotope transport simulation tool, called TRITIUM, has been developed for this purpose. The result of a collaborative effort between Empresarios Agrupados Internacional (EAI)/CIEMAT and directed and financed by Fusion For Energy (F4E, European Domestic Agency for the Development of Fusion and ITER), TRITIUM consists of a set of libraries created using the EcosimPro simulation platform developed by Empresarios Agrupados. For more info at TRITIUM tool article

New EcosimPro/ELECTRIC tool that fills a gap to model all types of electrical and electronic systems. Used in the aerospace world, energy, etc. sectors. There has been a digitalisation across industry that means that any aircraft, car, machine, electrical grid, renewable energy, etc. has more and more electrical systems than it did a few years ago. With this tool you can simulate from circuits to electrical machines, batteries, photovoltaic panels, etc. You can get more information from ECOSIMPRO/ELECTRICAL tool

Madrid (Spain). Empresarios Agrupados Internacional (EAI) is releasing a new version of the simulation tools EcosimPro and PROOSIS 2022 6.4.0. This new version includes many improvements in different areas for the modelling and simulation of systems based on algebraic-differential equations. EcosimPro/PROOSIS are tools used by leading customers such as the European Space Agency, Airbus, Safran, ITER, CERN, etc. to model complex systems for propulsion, cryogenics, HVAC, power systems, turbomachinery, rockets, solar thermal plants, nuclear power plants, etc. EcosimPro was born in the early 90s in a project with the European Space Agency for the design of environmental control system experiments on manned spacecraft (ECLSS) and PROOSIS was born in the European VIVACE project in 2007 for the creation of an aero engine performance simulation tool. Since then, many users have benefited from these powerful tools to design a multitude of systems for the International Space Station, satellites, aircraft engines, power plants, etc. The new version includes improvements such as: A new connection to Git to perform configuration control of the modelling libraries that facilitates teamwork. The user can now choose between using SVN or Git. New capabilities in the Monitor: Connect to Python and Javascript to draw any kind of 1D, 2D and 3D graph as a widget. With this improvement the user has an unlimited ability to graph simulation results. New widget to display TIME in different formats. New capabilities in plots to show maximum, minimum and average. Grouping of variables in the simulation Watch. New internal variables to trace the computation time of a Jacobian, a call to the residue function, integration step size, etc. New graphical tools to transform simulation schematics using new types of replaceable components (Find-and-replace). New capabilities for exporting models as web services. Now remote users can make simulations through a browser. Implemented the ability to export models using the FMI Model-Exchange standard and improved the version of FMI for co-simulation. New tool to export models for use from Python. Save and restore simulation states including discrete events. New graphical editors for 1D, 2D and 3D tables. Partition settings are now defined also at library level. For more information please contact info@ecosimpro.com

We are working on the new version of our products EcosimPro-PROOSIS 6.4 2022 which is scheduled for release on 1 January 2022. This new version of our simulation tools will incorporate new capabilities that will make EcosimPro-PROOSIS a state-of-the-art product in 0D/1D simulation worldwide. Some of the new capabilities are: Better and more robust solvers. Improved connection using FMI co-simulation and FMI Model Exchange. Integrated tool to connect with GIT and SVN configuration tools. Timing analysers calculating Jacobians. Easy export of models to web pages using web services. Remote connection to models using a web service API. Direct connection from Python. More thread-safe C++ code generated. Improved export tool to Linux. Creation of 3D scenarios for visualisation during the simulation. Use of python for creating any type of plot in the Monitor. etc. In case you already have an updated maintenance you will automatically receive the version as soon as it is released, otherwise please contact us.

In the ASME 2020 TURBO-EXPO Virtual conference, the National Technical University of Athens (NTUA) presented a modelling approach of Boundary Layer Ingesting (BLI) propulsion systems for future aircrafts. A distorted compressor model was created first in PROOSIS utilizing the parallel compressor theory in order to estimate the impact of inlet distortion on fan performance. A BLI propulsor component model was then developed in PROOSIS considering both distortion effects and reduced inlet momentum drag caused from boundary layer ingestion. A Turbo-electric Distributed Propulsion (TeDP) model based on NASA’s N3-X aircraft concept (Hybrid Wing Body) was eventually set up, consisting of the BLI propulsor model, the associated turboshaft engine model and a representation of the relevant electrical system. All models were validated through comparison with numerical and/or experimental data. A design point calculation was carried out initially to establish propulsor key dimensions for a specified number of propulsors and assuming common inlet conditions. Parametric design point analyses were then carried out to study the influence of propulsors number and location under different inlet conditions, by varying fan design pressure ratio between 1.15 and 1.5. BLI and non BLI configurations were compared at propulsion system level to assess the BLI benefits. The results show that maximum BLI gains of 9.3% in TSFC and 4.7% in propulsive efficiency can be achieved with 16 propulsors and FPR=1.5, compared to podded propulsors, while further benefits can be achieved by moving the propulsor array backwards in the airframe.

EcosimPro/PROOSIS 2020 (6.2) mathematical simulation tools have just been released. Since mid-March the whole development team is working from home, this shows that great things can be done using teleworking. It has been 20 years since the first commercial version came out, mainly for the space sector at that time, now it is already used in many others like aeronautics, energy, cryogenics, fluids, etc. This new version includes the following improvements: MAIN PROGRAM IDE – New experiment libraries that allow decoupling the partitions of the experiments. Now many users can create their own experiment library and create multiple experiments on some existing partitions in other libraries. – Port array management tool in the graphical editor that allows dynamic sizing of ports and connection to multiple connections. – New option to export schematics and all their experiments. – Compatibility with SVN versions from 1.7 to 1.13. CLASSES AND PARTITIONS – The new version allows to pass partition classes as function arguments. – Creation of a parent class called EPartition for all partition classes that allows any partition to be used generically. – Use of object pointers. – New virtual methods for classes. – Use of the “this” pointer as in C++. – Methods for copying variables between partitions and identifying a partition. SOLVERS – New versions of IDAS and CVODE improved to work with thousands of equations. – New variables of IDAS and CVODE solvers. Now the user can tune for each Jacobian variable by changing maximum step, maximum order of calculation, threshold for parallel calculation, etc. REGULAR EXPRESSIONS – Help the user to select variables by categories in the REPORT_TABLE and REPORT_LIST functions (for example to select all the algebraic at once) MONITOR – Improved 3D widget in Monitor with scene edition. – A new variable tree widget in Monitor. – Permitted moving widgets (eg. plotters) among tabs in Monitor. EXTERNAL CONNECTIONS – Improvements in the connection with the FMI standard allowing the use of enumerated, equivalent variables, etc. – The Co-simulation Wizard has been updated with new features (eg. capability to add external OPC-UA servers in a co-simulation scenario, capability to simulate the master program in Linux, new option to use a bus mechanism to speed up deck OPC-UA server communication, asynchronous calls). – Added the capability to produce HDF5 files in Linux. – Export models to RT-LAB platform. TESTING – New improved automatic testing tool. This new version will be available to any user who is up to date on their maintenance contract. If you would like any information about any of these new features please do not hesitate to contact us

The FMI-FMU model connection for co-simulation has been updated and validated in EcosimPro/PROOSIS improving the performance of the external model connection. This new improvement facilitates the co-simulation of models with other simulation tools using the international standard FMI. EcosimPro/PROOSIS models can be easily exported as FMUs by means of an intuitive wizard where the model configuration can be performed graphically. This does not require any manual programming, everything is generated automatically. Likewise, the import process of FMU models for co-simulation has been added to the EL language. The FMU models can be imported and executed in EcosimPro/POOSIS through a set of simple and well-defined functions that follow the FMI standard. The modelers can work simulatenously with many FMU instances (running in different processes of the CPU).

A new version of the FLUIDAPRO 5.2 toolkit is now available for users. This new version includes important improvements in the modelling and simulation of fluid systems (liquid/vapour, two phases) such as: combustors can define the set of chemicals taking part of the combusted gases, volumetric pumps can work with several types of performances maps, new 1D Tank component for the simulation of the temperature stratification inside the liquid and gas parts, new option in Pipe component that permits to simulate draining and blowdown conditions, etc.

This new toolkit permits to simulate a wide range of subsystems of the aircraft: gas turbine simulation, environmental control system (ECS), aircraft hydraulic systems, thermal management, organic rankine cycle (ORC), cabin and air distribution subsystem simulation, vapor cycles, etc. With ASYST you can save time and cost designing your aircraft joining the detailed performance modelling of the gas turbine and the different subsystems of the aircraft. ASYST can be used for the cycle analysis, on-design and off-design studies. Do not hesitate to contact us for more details.

Last week the studies performed with TRITIUM toolkit about the isotopic effect on tritium permeation in breeding blankets were presented during the 12th International Conference on Tritium Science & Technology (http://tritium2019.org/). Carlos Moreno, from CIEMAT, was in charge of this presentation. CIEMAT and Empresarios Agrupados have been working together in the development of this tritium simulation area. In this work, the effect of co-permeation and counter-permeation of hydrogen isotopes has been studied. Using the tritium transport simulation library in EcosimPro, the past experimental results have been successfully reproduced and the addition of hydrogen as a mitigating agent for the permeation in the different european blanket designs has been confirmed considering DEMO and ITER operational conditions.