numenGo|Fl overview

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numenGo|FL Generic thermofluid solution for system simulation

http://www.numengo.com/


numenGo

● Thermal Fluids modeling and simulation specialists● Our Vision

● Capitalize modeling know-how in evolutive, generic, platform-independant libraries

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numenGo | MPS

SIMULATION PLATFORMC

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Business Oriented Library

APPLICATIVESOLUTIONS

THEIR expertise

OUR expertise

YOUR expertise



numenGo|FL

● Contains high level components for thermofluid systems modelling and simulation

● create physical models of complete thermofluid systems assembling basic physcial phenomena

● To be used in a simulation environment ● Available for SimulationX®, LMS.Imagine.Lab.Amesim®, Simulink®, Python

● Simulate the system dynamic behaviour and optimize its control

SimulationX is a registred trademark of ITI GmbhLMS.Imagine.Lab.Amesim is a registered trademark of LMS IntlSimulink is a registered trademark of The Mathworks



Introduction

● System simulation

● Based on principles of 1D simulation● Flow generally supposed to be 1D● State of fluid is homogeneous in a control volume● Velocity is neglected in volumes● In 2-phase, liquid/vapour equilibrium

● Multiport approach● Components are connected by single ports

● Physical ports exchange energy● Signal ports for control and command laws

● Dynamic response of the complete system● Dynamic behaviour of the physical system and its control



Introduction

● Application areas● Heat machines● Cooling systems● Plant modelling● Air conditionning● Cryogenics● Space propulsion● Fuel cells● ...



FL overview – media definition

● FL deals with all state of matter● Liquid● Gas (perfect and real gas)● Two-phase (pure fluid and mixtures)● Solid● Mixture (ideal and real mixtures)

● Advanced fluid properties calculation● Based on numenGo|MPS, Media Property Server, optimized for system

simulation requirements● From simple descriptions to most accurate state of the art descriptions (ie

fundamental equation of state of Helmoltz, Extended Corresponding states...)● Extensive and scalable database

● ~100 two-phase media● >3000 simple media



FL overview - sources

● To define limit conditions● Thermosources

● To define a state● Ex: pressure, temperature conditions● Any thermodynamic variable can be used● Mass or molar basis

● Flow sources● To impose a mass, molar, volumetric flow

● Heat sources● To impose a heat flux



FL overview – mass transfer

● Flow equations● Incompressible, perfect gas compressible, real fluid compressible

● Cavitation, sonic blocking

● Flow resistance models● Flexible setting of pressure drop coefficients

● K, Cq, Kv, Cv, 2-K, Crane, tables

● Two phase flow● Slip-Ratio correlations● Two-phase pressure drop correlations

● Homogeneous● Separated flow




● Singular pressure drops● Generic orifices and valves

● Flexible geometry definition

● Predefined pressure drop correlation● Bends● Elbows● Reducer, expander● Filters● Tee junctions

● Porous media● Advanced flow and heat exchange models




● Pipes● Distributed models

● Dynamic discretization

● Inertial effects● Convective heat exchange



FL overview – control volumes

● Mass, energy, species balance● Fluid volumes● Accumulator● Thermal capacity


● Volume can change with time when connected to pistons

● A specific phase can be extracted at one port



FL overview – heat transfer

● Generic heat exchange● Convection, conduction, contact, radiation


● Advanced boiling and condensation models

● Unique heat exchange mapping system● When using discretized models● Build easily complex heat exchangers




● Diffusion in mixtures● Binary diffusion coefficients

● User defined coefficients matrix● Automatic estimation

● Fuller, Schettler and Giddings

● Effective diffusion coeffiients from Wilke formual

● Diffusion molar flows according to Fick's law



FL overview – sensors

● For inspection and control● Fluid properties

● Measure any property

● Flow and heat variables● Mass flow rate, molar flow rate, enthalpy flow rate



FL overview – machines

● Fluid and mechanical subsystems interactions

● Pistons● Variable volumes and mechanical feedback

● Pumps/Compressors● Fixed displacement, volumetric, centrifugal...

● Turbo expanders



FL overview - licenses

● FL available with 3 licenses● FL1 : single phase (liquid, gas, solid) and ideal mixtures● FL2 : extended with two-phase pure fluids capabilities● FL3 : extended with real mixtures and two-phase mixtures

● Business Oriented Add-ons● Moist Air, Heat Exchanger, Air Conditioning, Propulsion, etc...

● Available simulation platforms

● Excel, Matlab, Python interfaces● Script recurrent calculations● Sizing, parameter estimation, sensitivity analysis



FL overview

● Best-in-class thermofluid solution

● Highly polymorphic and flexible

● Scalable model database

● Extensive documentation with demos and tutorials

● Available for most-used scientific environments● Reusable along all the calculation chain


Date post:	27-Jun-2015
Category:	Technology
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numenGo|Fl overview

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