Femap 11 4 2 ThermalFlow by Zouya Zarei

Agenda Overview Graphical User Interface: Updated Workflow Solver Updates: New Capabilities Parallel Solves: Distributed Computing © Copyright 2016 Maya Heat Transfer Technologies, Ltd. All rights reserved.

Overview © Copyright 2016 Maya Heat Transfer Technologies, Ltd. All rights reserved.

MAYA Heat Transfer Technologies • Software development partner and reseller for Siemens PLM • 30 years of experience in design & development of Thermal, Flow, and Structural simulation software • Siemens OEM software developed by Maya Thermal / Flow (TMG) Laminates modeling Input file translators Correlation & Test software • • • Engineering consulting services • Software sales, implementation, training • Software customization © Copyright 2016 Maya Heat Transfer Technologies, Ltd. All rights reserved.

Femap: Independent Mesh-Centric Simulation Environment Solid Edge Solid. Works NX I-deas Auto. CAD Unigraphics Micro. Station Pro/E Catia v 4/v 5 Step, IGES Geometry prep & idealization, loads, constraints, materials Geometry Results New Horizons © Copyright 2016 Maya Heat Transfer Technologies, Ltd. All rights reserved. Meshing, solver specific technologies Results interpretation & correlation, report generation Finite Element Modeling NX Nastran MSC Nastran Autodesk Nastran TMG Adina Abaqus ANSYS LS-DYNA SINDA. . . Solution

Femap: Advanced Modules Femap Flow Solver Fully integrated and comprehensive 3 D computational fluid dynamics (CFD) solution Femap Thermal Solver Comprehensive heat transfer simulation package Femap Advanced Thermal Solver • Advanced suite of thermal simulation • Extensions to the Femap Thermal solver © Copyright 2016 Maya Heat Transfer Technologies, Ltd. All rights reserved. Femap Thermal is the same solver as I‑deas TMG and Simcenter 3 D Thermal

Overview Thermal/Flow user interface has been completely overhauled for Femap 11. 4. 2 Much more consistent with mainstream Femap user interface Exposes years worth of NX Thermal and NX Flow solver enhancements that were previously unavailable to Femap users © Copyright 2016 Maya Heat Transfer Technologies, Ltd. All rights reserved.

Femap Thermal: Conduction Modeling Control volume based approach Utilize all Femap 1 D, 2 D and 3 D elements to model conduction Thermally connect dissimilar meshes using thermal couplings for assemblies Orthotropic conduction Robust and efficient solver technology, automatically handles distorted & skewed elements © Copyright 2016 Maya Heat Transfer Technologies, Ltd. All rights reserved.

Femap Thermal: Boundary Conditions Flexible boundary condition application • Geometry and/or FEA based • Constant or Time Varying Thermal Boundary Conditions • Fixed Temperatures • Heat Loads, Heat Flux & Heat Generation • Convection & Radiation to Environment • Thermostats • Peltier Coolers (TECs) • Joule (electrical) Heating © Copyright 2016 Maya Heat Transfer Technologies, Ltd. All rights reserved.

Femap Thermal: Thermostats and Controllers Controls the heat load into a set of elements based on 1 or more “sensor” elements Thermostat • Constant heat load • Cut-in and cut-off temperatures • Proportional heat load • PID • Set point Temperature • Gain • Integral term constant • Derivative term constant • Bias © Copyright 2016 Maya Heat Transfer Technologies, Ltd. All rights reserved.

Femap Thermal: Thermal Couplings Conductance between disconnected, possibly nonaligned elements An additional heat path through which heat may flow Simulates a conductance based on values you specify and the area of overlap between the selected element sets Typically intended to model conductance between parallel surfaces or edges, without explicitly modeling the heat transfer medium between them (e. g. bolted joints, welds, pins, etc. ). © Copyright 2016 Maya Heat Transfer Technologies, Ltd. All rights reserved.

Femap Thermal: Primitives Primitive: An object that defines a set of 2 D or 3 D elements in terms of their geometry, size, location, and mesh • Positioned with respect to a coordinate system • Can modify a primitive with element and node operations © Copyright 2016 Maya Heat Transfer Technologies, Ltd. All rights reserved.

Femap Thermal: Radiation Modeling Comprehensive integrated modeling of radiative heat transfer Reverse Sides radiation for plate elements Beam element radiation Hemicube technology for view factors • Uses graphics hardware; implementation based on Open. GL • Solve time approximately linear with model size • Ray Tracing for specular reflections and transmissions Bi-spectral Radiative Heat Sources Radiosity formulation for Radiative exchange calculations Patching algorithm for matrix condensation © Copyright 2016 Maya Heat Transfer Technologies, Ltd. All rights reserved.

Femap Advanced Thermal: Orbital Modeling Orbit and attitude modeling • Supports all planets, several orbit types • Vector-based attitude modeling; arbitrary rotations, maneuvers • Control over orbital calculation points • Orbit chaining • Orbit visualizer Orbital environmental heat loads • Eclipses modeled automatically • Ray tracing of specular reflections, transmissions • Radiosity formulation of radiative exchange equations • Efficient solution using conjugate gradient solver • Heat loads automatically loaded for solver © Copyright 2016 Maya Heat Transfer Technologies, Ltd. All rights reserved. Articulating or spinning spacecraft • Efficient algorithms to recompute view factors • Visualize results on displaced geometry Orbit-averaged heat loads

Femap Advanced Thermal: Duct Flow and Correlations Models steady state and transient 1 D fluid flow using beam elements Simulates heat transfer to and from the fluid in a duct element using thermal couplings • Both free & forced convection correlations are available Model scenarios • Pipe systems • Radiators • HVAC systems © Copyright 2016 Maya Heat Transfer Technologies, Ltd. All rights reserved.

Femap Advanced Thermal: Orbital Modeling USER 1 is an optional FORTRAN 77 user-written subroutine that is automatically compiled and loaded with the Analyzer at run time • USER 1 may call other subroutines Many applications for User Subroutines • Integration of external code • Alternative correlations for fluid flow or convection • Application of complex boundary conditions • Customized output • Active temperature control systems • Time-varying spatial domains (ablation, phase change) Requires Intel Visual Fortran or Microsoft Visual Basic compiler © Copyright 2016 Maya Heat Transfer Technologies, Ltd. All rights reserved.

Graphical User Interface © Copyright 2016 Maya Heat Transfer Technologies, Ltd. All rights reserved.

GUI: Updated Workflow Contemporary Graphical User Interface for Thermal and Flow analysis workflows • New dedicated Thermal/Flow Model Info pane, analogous to Femap Model Info pane © Copyright 2016 Maya Heat Transfer Technologies, Ltd. All rights reserved.

GUI: Updated Workflow Contemporary Graphical User Interface for Thermal and Flow analysis workflows • New dedicated Thermal/Flow Model Info pane, analogous to Femap Model Info pane • Create all loads, constraints, and other simulation entities using the right-click commands in the Thermal/Flow Model Info pane. © Copyright 2016 Maya Heat Transfer Technologies, Ltd. All rights reserved.

GUI: Visual Feedback Contemporary Graphical User Interface for Thermal and Flow analysis workflows • Persistent navigator objects for all loads, constraints, and other simulation entities • Highlighting and display symbol support © Copyright 2016 Maya Heat Transfer Technologies, Ltd. All rights reserved.

Solver Updates: New Capabilities © Copyright 2016 Maya Heat Transfer Technologies, Ltd. All rights

Femap Thermal and Femap Flow Updates Enhanced Thermal and Flow solver functionality • Femap Thermal and Flow solvers synchronized with latest NX Thermal and Flow solvers (upgraded from current equivalence with NX 7. 5). • Benefit from core enhancements to solvers over 5 versions of NX Thermal and Flow solver development. © Copyright 2016 Maya Heat Transfer Technologies, Ltd. All rights reserved. 22

Femap Thermal Updates: Solver Improvements • Parallelized solver • Improved adaptive time stepping • Enhanced thermal couplings • Initial conditions from dissimilar meshes • Thermostat and active heater controller reports • Enhancement to transient end time options © Copyright 2016 Maya Heat Transfer Technologies, Ltd. All rights reserved.

Femap Thermal Updates: Hydraulic Networks Improvements • Improved duct flow advection scheme • Duct-to-3 D-CFD connections • Total temperature calculations © Copyright 2016 Maya Heat Transfer Technologies, Ltd. All rights reserved.

Femap Thermal Updates: Orbital Heating Improvements Enhanced Orbit Visualizer • Preview the orbit, spacecraft orientation, and calculation points • Rich set of visualization options © Copyright 2016 Maya Heat Transfer Technologies, Ltd. All rights reserved.

Femap Thermal Updates: Simulation Results Improvements • Expanded results output options © Copyright 2016

Femap Flow Updates: Solver Updates • Parallelized solver • Extended two-equation turbulence models • Large Eddy Simulation • Fractional step scheme • Enhanced second-order discretization schemes • Enhanced freeze-flow and re-start options • Static pressure and convective outflow boundary conditions © Copyright 2016 Maya Heat Transfer Technologies, Ltd. All rights reserved.

Femap Flow Updates: New Capabilities • Homogeneous gas mixtures • Immiscible fluid mixtures (volume

Femap Flow Updates: Simulation Results Improvements • Expanded results output options • Enhanced CGNS

Parallel Solves © Copyright 2016 Maya Heat Transfer Technologies, Ltd. All rights reserved.

Parallel Processing Extended parallel processing from view factor calculation (available in previous releases) to entire solution sequence for thermal and flow runs Distributed Memory Parallelization (DMP) of thermal and flow solvers: parallel solution threads can separately access both CPU and RAM Up to 4 processes on a compute node can be executed with Femap Advanced Thermal and Femap Flow licenses for no extra cost © Copyright 2016 Maya Heat Transfer Technologies, Ltd. All rights reserved.