NX Advanced Thermal
NX Advanced Thermal solves practical engineering challenges such as:
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Aero-heating (may require NX Advanced Flow).
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Phase change and thermal ablation.
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Thermal behaviour in high speed rotating equipment.
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Joule heating under various electrical loads.
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Laser and optical systems with ray-tracing.
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Thermal refraction in optical and other participating media.
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Infrared (IR) signature of large system in various environmental settings.
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Diurnal environmental solar heating (including cloud, altitud, longitude and latitude effects, object orientation, pollution effects and other attenuation effects).
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Implicit correlation-based free and forced convection heat transfer.
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Hydraulic network heat transfer.
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Specular, transmissive surfaces and other advanced radiation heat transfer applications.
Main NX Advanced Thermal add-on features:
- Motion and articulation modeling (multiple rotation and/or translation).
- Additional optical material properties:
- Electrical resistivity.
- Phase change and ablation properties.
- Extinction coefficient.
- Refraction.
- Bi-variate tables.
- Transmissivity/specularity.
- Angle dependent optical properties .
- Multi-layer shell.
- Diurnal heating:
- Object shadowing, orientation and planet location.
- Cloud, altitude, longitude and latitude, pollution, and other solar flux attenuation effects.
- Correlational for solar flux taking into account altitude.
- Multiple (or single) flux vectors, with a variable solar flux.
- Peltier cooler modeling.
- Electrical (Joule) heating.
- Infrared (IR) signature modeling.
- Thermostats PID controllers.
- Additional thermal couplings for advanced assembly context modeling:
- Join.
- One Way heat transfer.
- User defined.
- Connection break or Series or T-junction.
- Free and forced correlation-based convection couplings.
- 1D duct and hydraulic network elements.
- Additional radiation request types:
- Among group.
- Group to group.
- Monte Carlo* calculation method.
- Enhanced radiation with Ray Tracing.
- Radiation patch controls.
- Radiative heating.
- Open architecture (user subroutines).
- Restarts (Advanced controls).
- Support to include external files.
Monte Carlo Technology
- Alternate method to compute view factors, radiative conductances, and environmental heat loads.
- Provides capability to compute environmental and radiative heat loads directly, bypassing Oppenheim’s (radiosity) and Gebhardt’s methods.
- Allows for the simulation of interaction of radiation with participating media, i.e., absorption and scattering of light through a semi-transparent solid.
- Permits simulation of advanced optical properties:
- Direction-dependent emissivity.
- Bidirectional reflectance distribution functions (BRDF).
- Fully compatible with other TMG radiation analysis methods.
