FloEFD 16 - Le novità per la simulazione CFD in elettronica

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FloEFD 16Le novitAlexey Kharitonovich

Product ManagerTatiana Trebunskikh

Product Manager

Edizione italiana a cura di Cadlog

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1Your Initials, Presentation Title, Month Year

n.Your Initials, Presentation Title, Month Year 2010 Mentor Graphics Corp. Company Confidentialwww.mentor.com

Assorbimento del vapore acqueo nelle plastiche

Steam Mass in Solid vs TemperatureSteam Mass in Solid vs Humidity

n. 2016 Mentor Graphics Corp. Company Confidentialwww.mentor.comAK, TT, FloEFD 16 Whats New, 2016

Plastic saturation with water vapor does not occur due to capillary effects in the material, but due to the penetration of the polarized water molecules into the polymeric matrix representing a molecular structure of the material, and further diffusion of these molecules in matrix

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Assorbimento del vapore acqueo nelle plastiche

Il materiale solido pu assorbire e rilasciare vapore acqueo che essenziale considerare nellanalisi della condensazione, dei film e dellumiditRequires specifying Diffusion coefficients of water vapor (can be Temperature dependent) as additional property of solid mediumUses Equilibrium concentration which can be defined via Solubility or Concentration ratio (Y) for humid air and water filmPre-defined Polycarbonate has absorption properties

Water sorption: Experimental [1] weight gain (m/msat) data compared to FloEFD simulation results. Here z thickness of the piece.

[1] Jesse E.Galloway, Barry M.Miles. Moisture Absorption and Desorption Predictions for Plastic Ball Grid Array Packages.


Plastic saturation with water vapor does not occur due to capillary effects in the material, but due to the penetration of the polarized water molecules into the polymeric matrix representing a molecular structure of the material, and further diffusion of these molecules in matrix

Automatic means that absorption rate in water is just a factor of absorption rate in humid air. The factor is taken from experimental data.

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Condizioni riutilizzabili dei componentiRiutilizzo delle condizioni (es. configurazioni dei materiali, fonti di calore, ecc.) da progetti di altri componenti di un assemblaggio.By default conditions are added linked, so changing settings in a components project updates the main assembly project You can move condition to the assembly project to break the link

Global GoalsPoint GoalsSurface GoalsVolume GoalsEquation GoalsBoundary ConditionInitial ConditionPorous MediumSolid MaterialsSurface SourceVolume SourceRadiative SourceRadiation SourceFanHeat SinkRotating regionFluid subdomainContact resistanceTECPerforated PlateElectrical conditionsHeat pipeThermal JointPCBFilmsLED2R


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Condizioni riutilizzabili dei componenti

2. Go to Tools, Add from Components

1. Create project in the component3. Happy with conditions added

Multi-level. View. Copy to project


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Transient ExplorerI parametri selezionati possono essere salvati, senza bisogno di salvare tutti i risultati in momenti specifici, per ridurre la dimensione dei dati risultanti transitoriSophisticated (wavelet based) compression algorithm can achieve 10x compression than zip. Example: For a headlight, 10 parameters are saved every 2nd iteration, total size = 3 Gb.Compression factor decreased with increasing variability of the field, number of cells and frequent saving of intermediate full results


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Transient ExplorerLaccesso ai dati istantani transitori per I parametri selezionati disponibile tramite la modalit Transient ExplorerTo activate: Results, Transient ExplorerSupported for Cut plots, Surface plots (exc. 3D Plot, and gradient vectors), Probes, XY Plots, Goals (shown as widgets), Min/Max tableAdjusting sliders start and finish time to focus on a particular time intervalLinear interpolation between time moments can be optionally enabled


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Fonte di radiazione:intensit dipendente dallangolo e dallo spettroPer le fonti direzionali la distribuzione dellintensit di radiazione (detta Pattern) ora pu essere definita come una funzione dellangoloAxisymmetric to the main direction defined as either normal to face or vector

Lo spettro di radiazione ora pu essere definito come una fonte di radiazione (sia diffusivo che direzionale) Ability to define spectrum for LED sourceAbility to model radiation from a laser diodes


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SAR (Solution Adaptive Refinement)basato sulle radiazioniAllattuale SAR nellarea del fluido viene aggiunto il perfezionamento in solido (Refinement in solid) dovuto ai criteri di radiazioneSolid cell refinement occurs in cells where either incident radiant flux is high or incident number of rays is largeThis allows to automatically refine mesh in areas of hot spots caused by focusing on lens. Therefore it leads to more accurate prediction of the maximum temperature in the spotMonte Carlo radiation model only

Hot spot is not refined:T max = 180 CHot spot is refined:T max = 450 C


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Statistiche dintensit (beta)D lopportunit di analizzare la distribuzione dello spettro di un flusso radiativo in punti specifici della superficie irradiata Si attiva usando rpr_config.txt posizionato nella cartella del progettoSolo modello Monte Carlo

Beta feature. Check the Notes for activation.


To enable the feature you need to place rpr_config.txt into the project folderHere is the body of the rpr_config.txt file:

block_begin RadHistogramInPoints

S[0]="Filename.txt" ; filename of results

I[0]=2 ; Number of points. Maximum 100 point allowedD[0]=0.01 ; Evaluation radius of points in metersD[1]=1.1 ; X coord of 0 pointD[2]=0.2 ; Y coord of 0 pointD[3]=0.2 ; Z coord of 0 pointD[4]=2.1 ; X coord of 1 pointD[5]=1.2 ; Y coord of 1 pointD[6]=1.2 ; Z coord of 1 point

block_end

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Miglioramento delle funzionalit sui LEDLa dipendenza non lineare dalla temperatura della tensione, del flusso radiante e del flusso luminoso stata aggiunta allattuale dipendenza lineare


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Miglioramento delle funzionalit sui LEDLa corrente diretta del LED pu essere dipendente dallo scopo (per simulare il LED guidato dal sensore di temperatura)LED Custom Callout personalizzazione dei parametri del callout output

Select Output Parameters


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Network AssemblyLa funzione Network Assembly consente di modellare il N-resistor IC package specificando la capacit termica o la corrente, cos come la resistnza termica tra i nodi


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Configurazione della mesh. Miglioramento del canaleNuova opzione aggiuntiva per assicurare una mesh uniforme in canali di altezza diversa.

Standard (old) Channel Refinement ensures specified Number of cells across the channel using whatever refinement is needed.

This may lead to a non uniform mesh in channels with coarser cells in the middleThe new option ensures specified refinement level across the channel regardless of number of cells to be generated.

This makes uniform mesh in the channels of specified height.

You can set different refinement levels for different heights as a table function.

0.07 m0.1 m


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Ottimizzazione nella progettazione degli esperimentiAggiunta lottimizzazione multi-parametrica alla modalit Design of Experiments Parametric StudyDetermine the optimal design based on Design of Experiments results using the Response Surface Optimization method.Definition of Objective Function to Minimize,Maximize or search for a specific Target value.Weight factors and Constraints allow control ofmultiple parameters involved in the optimization process.Response Surface Viewer to inspect parameter dependencies easily and quickly.


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External OptimizerUna nuova modalit nello studio parametrico: External OptimizerConsente di controllare FloEFD da tool esterni di ottimizzazione (come iSight, modeFrontier, Optimus, HyperStudy, optisLang) per eseguire lottimizzazione multi-parametricaUso dello scambio di dati basato sul testo e linea di comando


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Miglioramenti in FloEFD 16Cambio di fase per i fluidi refrigerantiFlows of refrigerants with liquid to gas (cavitation/boiling) and gas to liquid (condensation) phase change (e.g. refrigerant flows in heat exchanger or air conditioning systems) can now be simulated. Stima del rumore di banda largaA postprocessing parameter to estimate Acoustic Power Level generated by isotropic turbulence in accordance with Proudmans definition.Importazione della fonte del volumeCoordinate based volume source import of heat flux and temperature. Can be used for irradiance input.Importazione caratteristiche del raggioDefine radiation source by importing Ray information such as location, direction, energy, wavelength (supported format is ASAP .dis). Beta feature. Check Notes for activation.


Ray Import support_config_MC.txt

block_begin MC_imported_rays S[0]="rayfile_100k_ASAP.DIS"; imported rays filename. file must be in project dir S[1]="spectrum.txt"; imported rays spectrum filename. file must be in project dir D[0]=0.0; X coordinate of LED center D[1]=0.0; Y D[2]=0.0; Z D[3]=0.0; X coordinate of LED normal axis D[4]=0.0; Y D[5]=1.0; Z D[6]=1.0; X coordinate of LED X axis D[7]=0.0; Y D[8]=0.0; Z D[9]=0.000000001; spectrum WL ratio for txt fileblock_end

ray file from goniophotometer by TechnoTeam.dePresentation Title


Miglioramenti in FloEFD 16WidgetsDisplay XY plot and Goals in graphics area (updated with time )Tracciamento superfici pi veloceAccelerating creation of surface plot with Use CAD Geometry mode enabled (requires recalculation in v16 with Results processing Speed-Up Data option enabled)Migliore analisi della convergenza degli obiettivi Goal convergence is now analyzed when the achieved number of travels equals 2 analysis intervals. Stop dei raggi allarrivo sulla superficie While displaying rays (for the Monte Carlo radiation model) you can optionally end rays at the surfaces they reach to hide reflected rays. Available in the LED/Lighting module.

0.2 = 2*0.1 start to check goalsGoals converged. Calculation stops


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Rappresentazione 3D1D basata sulla simulazione (Beta)Un componente 3D troppo complesso per essere rappresentato utilizzando i componenti esistenti di Flowmaster, pu essere rappresentato tramite FloEFDIl modello di comportamento risultante viene poi rappresentato come un componente N-arm nellimportazione in Flowmaster

Beta feature.


FloEFD 16 - Le novità per la simulazione CFD in elettronica

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Transcript of FloEFD 16 - Le novità per la simulazione CFD in elettronica