Idea Transcript
NX
NX Advanced Flow
fact sheet Siemens PLM Software
www.siemens.com/plm
Summary NX Advanced Flow software is an add-on module to NX Flow. The NX Advanced Flow solver provides a powerful and comprehensive solution to computational fluid dynamics (CFD) problems. Combined with NX Thermal, it solves a wide range of multi-physics scenarios involving strong coupling of fluid flow and heat transfer. NX Advanced Flow simulates internal or external fluid flow including compressible flows, non-Newtonian fluids, particle tracking, motion and multiple rotating frames of reference. Applications range from underhood automotive simulation to HVAC systems, aerospace drag/lift computations, nuclear power component cooling and much more. ®
Benefits Quickly move from NX CAD assembly to CFD simulation results Easy-of-use through efficient automatic fluid domain meshing Rapid what-if scenario investigations even for complex CFD analysis Leverage the full power of NX to: • Quickly find choking conditions or the location of shock waves • Account for aerodynamic heating • Measure the impact of large scale environmental contaminant dissemination for a given disaster scenario • Visualize complex turbulent phenomena • Examine multi-species mixing within the fluid domain • Account for rotational and translational motion influencing the fluid flow distribution • Calculate the buoyancy line of offshore and marine vehicles • Determine the size and power requirements in the case of a slurry pump application • Measure accurate head losses and volume flow rates within a blood pump system • Account for humidity effects such as condensation on windshields • Optimize aerodynamic shape or turbomachinery components
Product description NX Advanced Flow solves practical engineering challenges such as: • Calculating accurate drag and lift forces • Modeling aero-heating and fluid ablation (may require NX Advanced Thermal) • Modeling high speed compressible flows to find choking conditions or find the location of shock waves • Simulating high speed rotating equipment • Figuring out head losses and volume flow rates within a blood pump system • Calculating size and power requirements in the case of a slurry pump application • Studying the impact of large scale environmental contaminants dissemination for a given disaster scenario • Evaluating the buoyancy line of off shore and marine vehicles NX Advanced Flow solver capabilities • FE-based finite volume scheme • Navier-Stokes equations for both steady state and transient flow • Incompressible and compressible flow • Turbulent, laminar and mixed flows • Single and multiple rotating frames-of-reference • Supersonic flow equations • Unstructured fluid meshes (supports any combination of 3D tetrahedral, brick, pyramid, wedge and 1D elements, both linear and non-linear element types) • Fluid buoyancy terms (including altitude effects) • Automatic connection between disjoint fluid meshes at runtime • Multiple 1st and 2nd order advection with or without flux limiters • Efficient time stepping and other algorithms for fast transient calculations • Forced, natural, and mixed convection
NX
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Benefits continued Air intake assembly • Design a composite material oven components, including evaporation
Features High speed compressible flow Multiple rotating frames-of-reference Non-Newtonian fluid models Additional turbulence models such as SST, k-Omega General scalars and particle dissemination Humidity and condensation Motion, articulation, and moving boundaries (statically applied translation and rotation) Cyclic symmetry Axis-symmetry PPD and PMV HVAC and thermal comfort standard calculations NX Advanced Flow add-on results postprocessing options Mach number Humidity and condensation data Scalars distribution data Additional turbulence data Particle tracking PPD-Percentage People Dissatisfied (HVAC applications) PMV-Predicted Mean Vote (HVAC applications) Specific results tracking during solve time Coupling with NX Thermal and NX Advanced Thermal Conduction, convection and radiation conjugate heat transfer solver Nonlinear thermal contacts Thermal couplings (welded, bolted, bonded or thermal contacts) for assembly modeling Disjoint thermal/fluid meshes support in assembly modeling Motion and articulation modeling (multiple rotation and/or translation) Surface-to-surface, edge-to-surface radiative heat transfer
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Multiple fluids in separate enclosures General scalars diffusion and particle tracking Humidity and condensation algorithm Non-Newtonian fluid models Motion, articulation, moving boundaries (statically applied translation and rotation) Substructuring Cyclic symmetry Axis-symmetry CFD intermediate results recovery allowing solver restart Solution customization for thermo-fluid couplings (user subroutines)
CFD modeling capabilities • Automatic skin mesh (boundary layer mesh) with unlimited layer options • Complete set of automatic and/or manual meshing options for the selected fluid domains • Heat loads and temperature restraints on the fluid domain • Multiple enclosure definitions • Embedded 2D/3D flow blockages • Losses in fluid flow due to screens, filters, and other fluid obstructions • Porous media modeling (including orthotropic or anisotropic porous blockages) • Head loss inlets and openings (fixed or proportional to calculated velocity or squared velocity) • Fluid swirl and turbulence criteria at inlet and internal fans • Fluid recirculation loop with head loss or heat input/loss or fluid temperature change between unconnected fluid regions • Non-linear flow boundary conditions • Altitude effects • Nonlinear fluid properties • Fan models • Humidity and condensation on solid surfaces Multi-physics enablers Robust thermo-fluid coupled solutions. NX Flow and NX Advanced Flow can be seamlessly coupled to NX Thermal and NX Advanced Thermal for simulation of complex thermo-fluid interactions and conjugate heat transfer. This multi-physics coupling capability is included at no extra cost and no additional licenses are required other than the NX Flow, NX Advanced Flow, NX Thermal and optionally NX Advanced Thermal licenses. The thermo-fluid solver handles disjoint meshes at fluid/solid boundaries allowing great flexibility in assembly context thermo-fluid interactions. The fluid domain and thermal domain do not need to share nodes at the interface; the coupled solver will create the appropriate heat transfer coupling at all the solid/fluid interfaces. Thermo-elastic interactions. Temperature results from the NX Thermal and NX Advanced Thermal solution can be used as a pre-stress condition for a structural thermo-elastic analysis. The NX Nastran license is sold separately. Fluid-structure interaction. Pressure results from the NX Flow and NX Advanced Flow solution can be used as a pre-stress condition for a structural FE analysis. The NX Nastran license is sold separately.
NX
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Features continued Thermal solution customization (user subroutine) Hemi-cube-based view factor calculation (using graphics' card hardware) Thermal model substructuring for radiation heat transfer view factor calculations Radiation in participating media Radiation enclosures Radiative sources Diurnal solar environmental heating (including cloud, altitude, longitude and latitude and pollution effects) Specular and transmissive effects Optical radiative ray tracing Forced and natural convection correlations Hydraulic fluid networks Joule heating Phase change and thermal ablation Heater and thermostat modeling Peltier cooler modeling Open architecture solution customization (user subroutines)
Industry applications The following is a representative list of common industry-specific problems that can be solved by the NX Advanced Flow software (some applications require NX Thermal and NX Advanced Thermal): Aeronautic • Drag and lift estimates • Aero-heating and ablation modeling • High speed compressible flows • High speed rotating equipment • Aircraft brake thermo-fluid design • Engine exhaust systems thermo-fluid analysis • Exhaust plume impingement • Cabin heating and ventilation simulation • Transient cabin depressurization simulation • Aircraft electronics systems cooling strategy investigations Automotive and ground transportation • Engine cooling • Radiator sizing • Thermal management of automotive electronic systems • Headlamp and lighting cooling analysis • Headlamp hot spot and melting spot prediction • LED light active cooling simulation • Electric motor and drive thermal management systems • Exhaust manifold and underbody thermal issues • Clutch and transmission cooling • Heating effects on tanks and fuel supply systems • Brake systems thermo-fluid design • Heating and ventilation (passenger cabin HVAC) • Aerodynamic low-drag components design Civil and environmental engineering • Planning and simulation of building HVAC systems (PPD and PMV thermal comfort standard calculations) • Building thermal comfort assessments • Underground tunnel ventilation systems simulations • Underground tunnel disaster studies leading to preventive engineering enhancements • Water and gas supply systems simulations • Clean room contaminants simulations • Medical units and patient thermal comfort • Nuclear plant HVAC • Contaminant transport from ventilation systems (CFD with scalar) • Large scale environmental and contaminants disaster analysis • Pollution dissemination analysis • Water treatment systems simulation
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Consumer products • Product air or fluid circulation performance analysis • Complex shape product parts and assembly thermo-fluid performance simulation • Cooling strategies investigations • Minimizing head losses • Avoiding hot spots and recirculation areas Defense • IR signature modeling and simulations • Laser (with ray-tracing) and opto-mechanical devices thermal design and analysis • Extreme environmental conditions modeling – including diurnal solar heating taking into account cloud effects, longitude and latitude effects, vehicle orientation, pollution level, etc. • Thermo-fluid camouflage applications • Aero-heating and ablation modeling • Aircraft brake thermo-fluid design • Engine exhaust systems thermo-fluid analysis • Exhaust plume impingement • Cabin heating and ventilation simulation • Transient cabin depressurization simulation • Defense vehicle electronic systems cooling strategy investigations High tech and electronics • Determining electronic systems cooling strategies • Enclosures, subsystems, power supplies thermal management • PC boards, multi-chip modules detailed thermal design • Critical components placement • Heat sinks modeling • Spacing requirements between critical parts • Predicting fan operating conditions • Volume and mass flow estimations • Computing pressure inlet/outlet gradients and head losses • Identifying recirculation areas and hot spot issues HVAC • PPD and PMV thermal comfort standard calculations • Automotive and ground transportation cabins thermal comfort • Aircraft and airborne vehicles thermal comfort • Building thermal comfort • Clean room contaminants simulations • Submarine HVAC • Fire and contaminant dissemination simulation to design or improve safety systems • Medical units and patient thermal comfort • Nuclear plant HVAC • Contaminant transport from ventilation systems (CFD with scalar)
NX
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Industrial and manufacturing processes • Manufacturing processes simulation (drying stage, a heating or cooling station stage) • Preventing and/or troubleshooting operational failure due to heat problems (melt spots, running hot, performance degradation due to operating temperature, etc.) • Heating/cooling systems or sub-systems component sizing • Temperature critical components analysis • Hydraulic systems analysis • Instrumentation/sensors/optics operational thermal condition Lighting and electro-optic equipment • Melt spots prediction • Determining cooling strategies • Lighting system material selection • Test data validation • Troubleshooting operational thermal-related failures • Automotive headlamps thermo-fluid analysis • Instrument clusters and gauges thermo-fluid management • LED light active cooling simulation • Multimedia projectors thermo-fluid analysis • Digital display systems thermal simulation • Commercial and theatrical lighting systems analysis Machinery • Thermal management of machinery electronics • Cabin HVAC simulation • High speed rotary machinery thermo-fluid analysis • Thermal heat shields design and analysis • Instrument clusters and gauges thermal management Marine and offshore • Reduction of water drag forces on ships and submarines • External appendages CFD simulation for improving performances • Unsteady and transient flow scenario simulations (including startup conditions of high speed rotating propellers) • HVAC cabin systems design (PPD and PMV thermal comfort standard calculations) • On-board electronic equipment cooling strategies investigation • Pump systems analysis (including slurry pump calculations) • Hydraulic networks volume flow rate and head loss simulations • Water and gas supply systems simulations • Fire and contaminant dissemination simulation to design or improve the on-board safety systems
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Medical equipment and biomed • Thermal analysis of X-Ray tube assemblies • Thermal management of medical electronic systems • Contaminant transport (CFD with scalar) • Blood pump simulation • Patient thermal comfort HVAC Nuclear plants and power generation • Fuel rod bowing (coupled thermal-structural using temperature mapping, requires NX Nastran) • Computing flow distribution in reactor core (fully coupled 3D/1D flow models) • Contaminant transport (CFD with scalar) • Thermal management of critical electronic systems • Wind mills efficient blade profile design • Nuclear plant HVAC Oil and gas • Preventing and/or troubleshooting operational failure due to heat problems (running hot, performance degradation due to operating temperatures, etc.) • Heating/cooling systems or sub-systems component sizing • Temperature critical components analysis • Hydraulic systems analysis • Valve design and analysis • Pump systems analysis (including slurry pump calculations) • Hydraulic networks volume flow rate and head loss simulations • Instrumentation/sensors/ optics operational thermal condition simulation Space • Loop heat pipes analysis • Fluid pulse-driven cryo-coolers • Space test-bed experimental apparatus thermo-fluid analysis • Space station and future space modules HVAC • Determining telecommunication system cooling strategies • Enclosures, antenna subsystems, power supplies thermal analysis • Telecommunication critical components placement • Heat sinks design and material selection • Spacing requirements between critical parts • Identifying recirculation areas and hot spot issues Supported hardware/OS NX Advanced Flow is an add-on module in the NX Advanced Simulation suite of applications. It requires a license of NX Flow as a prerequisite. All standard Siemens NX hardware/OS platforms are supported (including Windows, Linux, Unix and selected 64-bit platforms). Contact Siemens for any other specific hardware/OS support requests.
Contact Siemens PLM Software Americas 800 498 5351 Europe +44 (0) 1276 702000 Asia-Pacific 852 2230 3333 www.siemens.com/plm © 2007. Siemens Product Lifecycle Management Software Inc. All rights reserved. Siemens and the Siemens logo are registered trademarks of Siemens AG. Teamcenter, NX, Solid Edge, Tecnomatix, Parasolid, Femap, I-deas, JT, UGS Velocity Series, Geolus and the Signs of Innovation trade dress are trademarks or registered trademarks of Siemens Product Lifecycle Management Software Inc. or its subsidiaries in the United States and in other countries. All other logos, trademarks, registered trademarks or service marks used herein are the property of their respective holders. 9/07