New 3-day introductory course on Modelling Gas Turbines with PROOSIS in September 2015

A 3-day introductory course to modelling Gas Turbines with PROOSIS will be given in Madrid from September 22-24, 2015. The course will focus on the modeling and simulation of aeronautical propulsion systems and on acquainting users with the wide range of calculations that can be done with PROOSIS.

Course brochure: Modelling Gas Turbine Engines with PROOSIS

To register or get information about the course, complete this form

New aeronautics papers available

New papers available in aeronautics area:

Performance Characteristics and Optimisation of a Geared Intercooled Reversed Flow Core Engine
Camilleri, W., Anselmi, E., Sethi, V., Laskaridis, P., Rolt, A., and Cobas, P.
Co-authored by Cranfield University, Rolls-Royce UK and Empresarios Agrupados.
Proceedings of the IMechE, Part G: Journal of Aerospace Engineering, DOI: 10.1177/0954410014530679, 2014

Concept description and assessment of the main features of a geared intercooled reversed flow core engine
Camilleri, W., Anselmi, E., Sethi, V., Laskaridis, Gronstedt, T., Zhao, X., P., Rolt, A., and Cobas, P.,
Co-authored by Cranfield University, Chalmers University, Rolls-Royce UK and Empresarios Agrupados.
Proceedings of the IMechE, Part G: Journal of Aerospace Engineering, doi: 10.1177/0954410014557369

Performance Assessment of a Geared Turbofan with Intercooling and a Reverse Flow Core.
Camilleri W, Anselmi E, Sethi V, Rolt A, Laskaridis P, Cobas P.
Co-authored by Cranfield University, Rolls-Royce UK and Empresarios Agrupados.
In Proceedings XXI International Symposium Air Breathing Engines (ISABE-2013-1713), Busan, Korea

New version of ORC Library

Raúl Avezuela, EcosimPro/PROOSIS

A new version of the ORC library (1.2) is now available which palette of components is shown in the figure. It further facilitates the calculation of fluid properties and is compatible with the new versions of PROOSIS (3.6.14) and the TURBO library (4.0). We especially want to highlight the implementation of a new way of calculating the thermo-physical properties of the working fluid based on the interpolation in look-up tables. This new feature allows the use of the library without requiring a license for the external software REFPROP (REFerence fluid PROPerties). In addition, a number of minor modifications have also been implemented to correct bugs and improve component modelling.


The aim of the ORC library is to calculate the thermodynamic design and off-design of an ORC (Organic Rankine Cycle) and to study the overall performance of the aircraft engine when it is coupled to the ORC system.

The key features of the library are the following:

• Steady calculation and transient analyses can be performed
• The working fluid is selected from a list of coolants that are already defined in the library: R113; R245fa, R410a, R141b, R134a, water and ethanol. However users can use their own working fluid as well.
• The thermo-physical properties of the working fluids can be calculated either by means of external software REFPROP or by interpolating in fluid properties look-up tables
ORC library components are compatible with those of the TURBO library. This allows the user to create a combined model in which components from both libraries interact
• Components can be used in thermo-design mode or in off-design mode, just by switching an input parameter

The following figure shows an application example of an unmixed turbo-fan engine coupled to an ORC cycle heat recovery system.


4th ESPSS Users Workshop in Lisbon

The 4th ESPSS Users Workshop for users of EcosimPro/ESPSS was held on March 6, 2015 in Lisbon, Portugal. The novelties of the new release of EcosimPro, EcosimPro 5.4, and new capabilities of the latest version of the space propulsion ESPSS were presented at the event, attended by more than 20 engineers from different European companies that use this product and organised by ESA (European Space Agency) and EA (Empresarios Agrupados).

During the workshop, improvements to the ESPSS toolkit aimed at converting the tool into a product of reference worldwide for the modeling of space propulsion systems were discussed. In addition, EA proposed solutions to various problems encountered by users.

At the close, ESA took good note of the many good new ideas put forth for improving future releases of the EcosimPro/ESPSS product.

New ECS Library

Raúl Avezuela, EcosimPro/PROOSIS

A new ECS library is now available in PROOSIS. The PROOSIS ECS library is used for performance analysis and dynamic simulation of Environmental Control Systems (ECS) and other aircraft pneumatic systems.

The ECS library offers a set of typical components and subsystems for the modelling and simulation of the aircraft ECS such as ducts, valves, heat exchangers, fans, turbines, etc. It includes components to represent the cabin and the passengers as well.

The palette of components of the ECS library is shown in the following figure.


The main features of the library are the following:

• Dynamic simulation and performance analysis of Environmental Control Systems
• Connection to the aircraft engine model
• Modelling of the control system of the ECS
• Easy customisation of the cabin layout
• Assessment of different cooling pack architectures
• Analysis of the comfort of the passengers
• Easy customisation or creation of new components

The ECS toolkit includes several application examples to allow the users to develop their own models. The following figure shows the schematic diagram of an aircraft engine model connected to the pneumatic system of the air conditioning pack for the ECS.


EcosimPro-ESPSS Workshop in Lisbon

Pedro Cobas, José Moral & Javier Vila, EcosimPro/PROOSIS

The fourth EcosimPro/ESPSS user’s workshop was held on 4th March 2015 in the Universidad Técnica de Lisboa, organised by the ESA (European Space Agency) and EA (Empresarios Agrupados). The session started with a presentation on the latest capabilities of EcosimPro 5.4.14, which was released in February. The progress made with the latest version of the ESPSS toolkit was later presented. Some of the issues encountered by ESPSS users that were solved by EA in recent months, as well as the feedback obtained from users for future upgrades, were also presented. To close this first part of the workshop, the new ongoing development projects in EcosimPro for future versions were presented, including the Montecarlo Simulation, the calculation parallelisation, 3D visualisation for spacecraft, new automatic testing tool, etc.

During the second part of the workshop, several companies that use EcosimPro/PROOSIS presented some of the problems they have faced with the tool. Different solutions for future versions were discussed.

The last part was a roundtable at which the users discussed new upgrades in future versions of ESPSS. The ESA and EA made a note of them to include them in future development processes.

The workshop was chaired by Johan Steelant and Francesco di Matteo, of the European Space Agency and responsible for ESPSS.

Symposium on Fusion Technology (SOFT)

Almudena Rueda & Jenifer Serna, EcosimPro/PROOSIS

EA participated in the 28th International Symposium on Fusion Technology (SOFT) held in San Sebastián, Spain. This symposium is the foremost event on an international scale in the field of fusion. It brought together a large number of scientists, against the backdrop of the development of ITER.

The symposium provided guests with access to information about ITER and the field of nuclear fusion as a whole in several communication sessions and presentations.

As part of this event, EA submitted the work performed in the modelling of the TBS (Test Blanket Systems), which involved the development of a set of simulation libraries in EcosimPro. The simulation of these systems is especially useful to provide support to engineering in areas such as the selection of alternatives, study of materials, testing of the system at different operating stages, etc. The characteristics of the modelled system, as well as the details of the model finally used and the results of the different simulations were explained in detail to a large number of guests interested in the subject.

New version of the FLUIDAPRO

José Moral & Javier Vila, EcosimPro/PROOSIS

The FLUIDAPRO toolkit, formed by a set of professional libraries developed for the simulation of complex fluid systems, has recently undergone a profound reworking that significantly improves the quality of both the technical side and of the renewed visual appearance of this tool.

The new features of this new version include the possibility of simplified simulation of certain combustion processes thanks to the new ‘reactor’ component. This component includes two injectors that can operate with liquids or gases and a chamber that calculates the composition and properties of the combustion products, which are transmitted downstream from the reactor. To do this, all the library components have been adapted to operate with combustion products.


The following other significant improvements have also been introduced:

• Variable area in the pipe component as a function of its length
• Option of working with user-defined fluids in the Reactor component
• A basic vaporisation model has been added in the Reactor component
• Possibility of defining the non-condensable fluid with the properties of a real gas
• New option in the check valves to accelerate the simulation

Furthermore, new examples of use have been included to showcase the new capabilities. An important effort has gone into improving their documentation and the user manuals so as to facilitate the use of the libraries. The added models include refrigeration thermodynamic cycles under two-phase conditions, mixing of three lines with different working fluids, gas turbine cycles with water injection, and some examples in the space field.


Release of new versions EcosimPro 5.4 and PROOSIS 3.6

The new versions of EcosimPro 5.4 and PROOSIS 3.6 were released today with many new features for advanced simulation. The latest enhancements include making these new versions compatible with 32-bit and 64-bit Microsoft and INTEL compilers, which can cut down considerably on simulation times. They also contain improvements in several other areas, such as the GUI, wizards for experiments, optimized numerical solvers, etc. Please contact us for more information.