EMPRESARIOS AGRUPADOS

The PROOSIS Modelling and Simulation tool provides a flexible,

reliable and extendible tool for the simulation of gas turbines and

other aeronautical systems (control, electrical, fluids, thermal,

etc). It is a multi-disciplinary tool that allows cooperative work

among engine companies. It uses state-of-the-art technologies in

areas such as numerical solvers, non-causal modelling of

reusable libraries, XML file formats, intuitive graphical user

interface, etc.

PROOSIS name is taken from the acronym Propulsion Object

Oriented Simulation Software but it is also a Greek word meaning

propulsion.

PROOSIS offers a user-friendly interface: by means of drag-and-

drop of the included library components, the user can model

different gas turbine system configurations, and make different

calculations with them. Thanks to an object-oriented and

“engineer-friendly” language (EL), the user can also create new

components and create new libraries, or extend the existing ones.

PROOSIS was developed by Empresarios Agrupados

Internacional (EAI) based on EcosimPro in close collaboration

with the European aerospace industry and academic institutions

and thus represents the state-of-the-art in gas turbine modelling.

It provides tools for the conceptual design of engines, facilitating

the analysis of the impact of different configurations, off-design

calculation, mono-point and multi-point design, parametric

studies, sensitivity analysis, customer deck generation, map

handling, etc.

PROOSISPropulsion Object Oriented Simulation Software

PROOSISPROOSISPropulsion Object Oriented Simulation Software

A two-spool, mixed flow turbofan modelled with PROOSIS

EA Internacional S.A.

Magallanes, 3 Madrid

28015 Spain

URL: http://www.proosis.com

Propulsion Object Oriented Simulation Software

A first class simulation tool for modelling gas turbines and other aeronautical systems

PROOSIS

EMPRESARIOS AGRUPADOS

EA Internacional

Empresarios Agrupados (EA) is an architect-engineering

organisation that was founded in 1971 and belongs to the

following companies: Técnicas Reunidas SA, GHESA

Ingeniería y Tecnología SA, Iberdrola Ingeniería y

Construcción SAU, and SOCOIN Ingeniería y Construcción

SLU.

PROOSIS is a powerful object-oriented modelling and simulation tool for gas

turbine systems. It covers the whole life of engine performance study, from

preliminary design to customer deck delivery.

PROOSIS is based on the EcosimPro tool, from which it inherits all its features:

- Powerful algebraic-differential equation solvers for transient and steady

calculations

- Non-causal object oriented modelling language

- A powerful symbolic sorting algorithm to create robust mathematical models

- Creation and integration of custom multi-disciplinary libraries and components

PROOSIS is a tool that combines all the features of EcosimPro with additional

features specifically focused on the development of propulsion systems, such as:

- Sophisticated wizard for creating mathematical design models with capabilities

for working at several working points (take-off, landing, etc.), defining design

variables, closure equations by using equalities and inequalities, etc.

- Wizards for off-design calculations, parametric and sensitivity analysis

- Map class for handling all compressor, turbine, etc. maps with all performance

data stored in XML format. The behavior of the the compressors can be described

with BETA and MFT maps. Maps can be visualised when running simulations,

showing the results over the compressor or turbine map (efficiency, surge and

rotational speed lines are also drawn)

- PROOSIS can reuse any legacy code in FORTRAN, C, C++, etc. and it produces

C++ code with the final simulation model. Furthermore, it can be easily connected

to any external program (eg. optimization tools, simulation workflows,

databases, etc.)

- The user can execute PROOSIS models using Microsoft® Office Excel and

MATLAB/Simulink® tools

- A customer deck generation tool exporting any engine model as a black box in a

dynamic library (.dll) following the international standards SAE ARP4868 and SAE

AS4191 for Gas Turbines. The deck can be reused later either programatically

(either from C or C++ or FORTRAN) or as an executable. All deck information

(including maps) is generated encapsulated and encrypted for final users

• TURBO is a library with more than 70 typical components for building performance models of aeronautical gas

turbines. The library is provided in source format so that the user can customise any component or create new

components based on existing ones (eg, by using inheritance, aggregation,etc.). It includes all the typical

components of gas turbine engines, such as compressors, turbines, fans, nozzles, propellers, combustion chambers,

shafts, heat exchangers, etc.

• A wide range of gas turbine configurations can be modelled: land, air and sea applications, simple, single-spool

turbojet models, complex mixed-exhaust multi-spool turbofans with several secondary air systems, etc.

• Several industrial companies, research centers and universities (Athens, Cranfield, and Stuttgart Universities)

collaborated in the creation and validation of this library. It has been robustly modelled based on international

standards and on widely-used modelling guidelines. The TURBO Library has been built taking maximum advantage of

the Object Oriented Modelling Ecosimpro Language (EL) and of the additional functions for gas turbine simulation in

PROOSIS

• Different switches allow the user to define the way in which calculations are performed; the user can then model

the physical behaviour of the components at different levels of detail

• A wide range of compressors can be simulated with one or a combination of the following features:

- With or without characteristic maps

- BETA line or MFT (Map Fitting Tool) type maps

- With no bleeds or a user-defined number of bleeds (secondary air systems)

- Variable Inlet Guide Vane Angle

- Low Reynolds and gamma corrections

• Different levels of approximation can also be used to simulate other components: multi-staged cooled

turbines (with or without maps, equivalent single-stage or thermodynamic efficiency turbine models), burner

efficiency, burner emissions, nozzle behaviour, etc.

• Each component of the TURBO library was tested individually, and the results fully validated

• The TURBO library and component definitions are based on international standards (SAE Aerospace

Recommended Practice 5571). The component modelling uses the “common” state of the art techniques

for modelling fluids, maps, etc. The library has been validated against other internal and commercially

available tools.

A big advantage of the Object Oriented modelling approach is its component hierarchy feature, which?

minimizes code duplication and thereby enhances software maintainability. This hierarchy is continuously

growing as the library expands by rearranging the tree structure according to the functionality.

Several specific engines were created to validate the integration of components in the ENGINE library (also ?

provided with the tool), with satisfactory results when they were compared to reference models. ENGINE

library provides some illustrative engine configuration models (turbojet, turbofan, turboshaft, turboprop, etc)

built with the TURBO library. It also includes typical calculations for design, offdesign, transient and steady-

state calculations, among other.

PROOSIS provides tools for the conceptual design of an engine, facilitating the analysis of the impact of

different configurations and preliminary dimensioning of equipment, mono-point and multi-point design,

parametric studies, sensitivity analysis, customer deck generation, optimization studies, multi-fluid

models, maps handling, etc.In pre-design phase, PROOSIS allows investigating different options,

providing more time for analysis and robust choices.

PROOSIS enables the user to extend the relations between the performance model and other

disciplines. Creation and integration of custom library/components in 0-D engine cycle models allow

multi-disciplinary (cooling, control, hydraulics, mechanical, electrical, etc) simulations to be performed

from within the same simulation environment. This reduces system-level analysis and optimization

timescales.

A two- spool, unmixed flow turbofan modelled with PROOSIS

Engine model with multi-disciplinary modelling (cooling, control, two-phase fluids, etc)

Turboprop: Parametric off-design study

The TURBO Library

Maps visualization in PROOSIS

PROOSIS as a design tool