**Simcenter FLOEFD 2021.****2**

디자이너를 위한 Frontloading CFD인 FLOEFD는 CFD 시뮬레이션의 강력한 기능을 제공하는 Simcenter FLOEFD는 CAD 환경의 성능을 CFD로 확장하였습니다.

또한, 형상(geometry)이나 경계조건(boundary conditions) 변경이 결과에 미치는 영향을 쉽게 이해하고, 빠르고 빈번한 What-if 분석을 수행하며, 선호하는 CAD 플랫폼 내에서 통찰력 있는 보고서를 생성할 수 있습니다.

빠르고 정확한 기술을 기반으로 구축된 Simcenter FLOEFD는 전체 시뮬레이션 시간을 최대 75% 단축하고 생산성을 최대 40배 향상할 수 있도록 지원하는 Simcenter FLOEFD는 NX, Creo, CATIA V5, Solid Edge에서 직접 사용하여 설계 프로세스를 중단하지 않고도 작업을 할 수 있습니다.

Simcenter FLOEFD 2021.2가 Release 되었습니다.

**Highlights**

Structural : Linear buckling.

Structural : Modal frequency analysis of loaded model.

Structural : Iterative algebraic solver.

Electromagnetics : Electromagnetic solver refinement of polynomial order.

Combustion : Three component mixture.

Teamcenter : Added Simcenter FLOEFD for NX Results Preview in TC

NX 1980 series. Support of NX1980 series.

Creo material import. Material definition set in Creo® can now be imported into Engineering Database.

SWOEM new Geometry kernel. SWOEM 2021 SP3 is used as new geometry kernel.

**Electromagnetics**

**Overview_Electromagnetic analysis capabilities**

AC

Time-Harmonic solver

Transient solver (EM simulation time is considered to be much smaller than CFD characteristic time)

Surface Impedance (for effective Skin effect analysis)

Permanent Magnets

Iron Loss

Demagnetization

Linear and non-linear electromagnetic material properties

Visualization of J, B, Ohmic and Iron Losses

**Polynomial Order Solver Refinement (p-Adaption)**

Electromagnetic solver refinement of polynomial order. To increase accuracy for an electromagnetic analysis in local areas, you can activate automatic local increasing of polynomial order (up to order three) during solver. The polynomial order of elements that have the highest flux density errors is raised.

**Results Visualization Improved**

In some cases, EM plots may be spotty in previous version. This is fixed in 2021.2.

**Dynamic Rectangle Improved**

The dynamic rectangle can be easily oriented to the desired position by setting coordinates and angles directly in the callout.

**2. Structural**

**Overview_Structural analysis capabilities**

Fully automated hexahedral dominant mesh generator

A special PCB model based on EDA data

Linear solver

Modal frequency analysis

Isotropic and orthotropic elastic material properties

Transferred pressure and temperature fields from fluid dynamic analysis with conjugate heat transfer as pressure and temperature loads

Multiphysics task

Export project to SC3D (FEM geometry and conditions)

**Linear Buckling – Basics**

Loss of structural stability is a dangerous problem as it could happen even if stresses are below the yield limit. The phenomenon is a result of deformation’s backward impact on construction stiffness.

The beam shown on the left has a stretching load applied and cannot lose stability, but the right beam’s behavior is unknown and depends on its design, size ratio and so on.

Linear buckling analysis is the simplest type of analysis to estimate the load value’s limit as to when a model can lose its stability.

**Linear Buckling**

Results of a linear buckling analysis are the displacement fields for different modes and Eigenvalues table (or critical multipliers table). The original load applied to the model and multiplied by these Eigenvalues would cause the stability failure in a perfect system (negative value means that particular mode can occur if loads are in the opposite direction).

**Modal Frequency Analysis of a Loaded Model **

Modal frequency analysis can now be conducted considering loads of all types.

Comparison of the results of loaded and non loaded model

**Iterative Algebraic Solver**

An iterative algebraic solver can be activated to solve memory intensive structural problems, for example very complex PCBs, to minimize memory requirements for a structural simulation. The iterative solver can take longer to solve than the default “Direct” solver so the iterative solver is recommended to be used only if the available memory is insufficient for the simulation task.

**3. Electronics Cooling & Thermal Management**

**Overview**

Heat Pipe and Heat Sink

Package Analysis

e-Powertrain Thermal Management

BCI-ROM and

Thermal Netlist

Battery Design

Bioheat Analysis

ECU and Computer

Design

Package Creator

Joule Heating

Charging

PCB Electrical-Thermal-Structural Design

Calibration

**SmartPCB: HyperLynx Report**

You can now optionally enable a HyperLynx™ report to study results of a co-simulation in a HyperLynx html report such as Electric Current Density, Voltage, Pin Current and Voltage, etc.

You can also optionally delay the start of co-simulation. If joule heating is the only heat source in the task, you need to start co-simulation from the beginning. If the task has other sources and more complicated physics which require time to converge, you may want to delay the co-simulation to a moment in the calculation where other parameters are converged to optimize the convergence time.

**Two Resistor: Power Value is Added to the Name. **

By default two-resistors show the component’s power in the name.

**Thermal Netlists: Intelligent Naming in VHDL-AMS format. **

The temperature probe names are extended with the “extracted_tnetlist_” prefix for easier tracking in a system tool.

**BCI-ROM in VHDL-AMS format from Simcenter FLOEFD**

A new blog post highlights why BCI-ROMs in VHDL-AMS format should be used for electrothermal circuit simulations and demonstrates an example of an ADAS camera. A dynamic thermal management strategy is implemented to keep the temperature of the CPU in the operating range by adjusting the global clock rate.

PartQuest Explore live design : https://explore.partquest.com/node/465264

**Simcenter FLOEFD and Simcenter Amesim synergy: BCI-ROM as FMU**

A potential use case for BCI-ROM FMUs is covered in the “Thermal management of Electric Vehicles is now a breeze” blog post. The example shows a Simcenter Amesim model of an electric vehicle with a BCI-ROM of an inverter from Simcenter FLOEFD added to the circuit as an FMU.

**4. Optics and Lighting**

**Lighting, optics, and radiation in one glance**

LED Electro-Thermal-Optical model

Solar Radiation

Light Guides

Lamps, Lights, Bulbs

Ultraviolet Germicidal Irradiation

Near Field Illuminance

Light Distribution

Lidar

Thermal-Optical Analysis

Camera Thermal and Fog Simulation

Optics

On-Orbit Radiation

Far Field Intensity

**Radiation Source: Coordinate System Selection, Add source into Parameter Editor**

You can select any coordinate system (Global, Face or Custom) for your radiation source to define non-uniform intensity or blackbody temperature distribution over the selected faces.

Radiation Source settings are available in the Parameter Editor. This allows you to easily change different parameters across multiple projects and configurations at the same time.

**5. Technology Improvements**

**Overview_SmartCell Technology **

Simcenter FLOEFD automatically applies appropriate Analytical or Empirical solutions in places where mesh resolution is not enough for an accurate Numerical solution. As a result the mesh setting is easy and fast, and calculation time is dramatically decreased because accurate results can be achieved with a coarser mesh.

**Turbulence 2nd Order Approximation. **

The second order approximation is now used by default for convective terms of turbulence equations. The 2nd order model has better convergence for cases with high oscillations at the beginning of calculation.

**Advanced control parameters.** You can now define a project’s advanced control parameters in the Calculation Control Options dialog. Currently only one parameter is available: the parameter name is “TurbulenceOrder” and the parameter value can be “1” for the first order approximations and “2” for the second order (default).

**Combustion: Three Component Mixture**

Combustible mixtures can have three components, and the third component can be fuel or oxidizer.

**6. Usability**

**Other Improvements**

**Add from components : Move to active Project.**A feature linked to an assembly’s project from an assembly subcomponent can now be easily moved to the assembly’s project while breaking the original link using the new**Move to Project**command.**Goals : Pressure Drop and Loss coefficient goals for perforated plate.**Pressure Drop and Hydraulic Loss Coefficient feature goals are added for perforated plates.**Streamlines with arrows.**Streamlines can be seen with arrows if an MGC_STREAMDIR environment system variable is activated.

**7. Interoperability**

**Simcenter FLOEFD is tightly integrated with other Siemens tools**

**8. Teamcenter Support**

**Other ImproTeamcenter : Added Simcenter FLOEFD for NX Results Preview in TCvements**

Each of the resulting pictures, video, Microsoft Word documents and Microsoft Excel spreadsheets are stored in separate dataset types and can be viewed with built-in Teamcenter® software tools. Simcenter FLOEFD™ for NX scene files are stored in a new special dataset type supported by Teamcenter version 13.2 and later and can be viewed with the standalone free of charge Simcenter FLOEFD Viewer.

**9****. CAD Integration**

**CAD Specific Enhancements**

**NX 1980 series.**Support of NX1980 series.**Creo material import.**Material definitions set in Creo® design software can now be imported into Engineering Database.**SWOEM new Geometry kernel.**SWOEM 2021 SP3 is used as new geometry kernel.**CATIA V5 : Automatic disabling of cache.**Enabling cache option in CATIA® software V5 may cause some issues therefore Simcenter FLOEFD™ software for CATIA® software V5 detects if the cache is activated and automatically disables it.

**10. Licensing update**

**Customize Feature : Improved.**The license selection in the Customize Feature dialog is improved to avoid license conflicts if composite licenses (e.g. Electronics Cooling Center, Ultra) are available together with atomic licenses (e.g. Electronic Cooling Module).**Customize Feature : Use selection only for the current session.**An option to use selected license features only for the current session is added. Open the Customize Features, and choose the “Select at start”. Then, on starting FLOEFD select the features to use in the opened Customize Features dialog and enable the “Only for current session” option - the selected license choice will not be saved for the next session.**Licensing : Add Package Creator to EDABridge.**EDABridge module now has Simcenter FLOEFD Package Creator capability (the “efdpcreator” license is added to EDABridge product, MG273852FL).**Licensing : Add Simcenter FLOEFD SC to all Flexx licenses with Simcenter FLOEFD for NX.**Simcenter FLOEFD SC is added to the following licenses for alternative use: MG251144FL, MG251142FL, MG250204FL, MG251145FL, MG250205FL, MG250203FL.