NX Space Thermal
Principal ] Arriba ] NX AdvSim ] NX Thermal ] NX AdvThermal ] NX Flow ] NX AdvFlow ] NX ESC ] [ NX Space Thermal ]

NX TMG Space Thermal

NX Space Thermal for Advanced Simulation environment is an industry-specific vertical application for thermal analysis of space systems.

Aplicaciones de NX Space Thermal

 Specific capabilities for the Space industry

  • Orbital models for all planets of our solar system at any specific point in time and attitude
  • Powerful and fast view factor calculations (including parallel computing for large space thermal models)
  • Powerful and smart view factor transient re-calculations for the case of articulation simulations, such as for solar panel joints rotation allowing constant pointing at the sun or antenna pointing to specific location
  • Efficient transient solution for thermal shock transient analyses during eclipse
  • Multi-layer shells specific formulation for MLI and TPS applications
  • Interfaces to: 
    - SINDA
    - TSS 
    - TRASYS
    - ESTAN
    - ESARAD 
    - Thermica

 NX Space Systems Thermal solver capabilities

  • Steady-state (linear and nonlinear)
  • Large selection of 1D/2D/3D linear and parabolic finite element types supported
  • Material nonlinear thermal properties
  • Multi-layer shells for MLI and TPS applications
  • Axi-symmetric modeling
  • Cyclic thermal problems
  • Iterative conjugate gradient solver technology
  • Fully coupled conduction, radiation and convection heat transfer simulation
  • 1D duct and hydraulic network elements
  • Motion and articulation modeling (translational motion and rotational joints)

 Thermal Coupling technology for modeling thermal contacts within NX assembly

  • Thermally connect disjoint and dissimilar mesh faces and edges 
  • Surface-to-surface, edge-to-edge or edge-to-surface contact modeling between parts: constant, time or temperature-dependent coefficient of heat transfer, resistance or conductance
  • Radiative exchange between disjoint part faces, and faces within a single part
  • Interface modeling between connected parts: constant, time or temperature-dependent coefficient of heat transfer, resistance or conductance
  • Convective exchange correlations between faces: parallel plates, concentric spheres or cylinders
  • Join
  • One Way heat transfer
  • User defined
  • Connection break, Series or T-junction

 Optical, material and surface properties

  • Electrical resistivity
  • Phase change and ablation properties
  • Extinction coefficient
  • Refraction
  • Bi-variate tables
  • Transmissivity/specularity
  • Angle-dependent optical properties

 Applied heat loads

  • Constant and time-dependent: 
    - Heat loads
    - Heat flux
    - Heat generation
  • All applied loads can be controlled with temperature-controlled thermostat conditions or PID controllers
  • Radiative heating
  • Peltier coolers modeling
  • Electrical joule heating

 Temperature boundary conditions

  • Constant temperature for steady-state or transient
  • Time varying for transient and for nonlinear steady-state
  • Thermostat temperature controls or PID controllers

 Conduction heat transfer

  • Handles large conduction models (memory efficient data scheme)
  • Temperature-dependent conductivity, specific heat
  • Orthotropic conductivity
  • Heat of formation at phase change temperature

 Convection heat transfer

  • Constant, time and temperature-dependent heat transfer coefficients
  • Parameter and nonlinear temperature gradient functions

 Free convection

  • Correlation-based free convection to ambient for inclined plates, cylinders and spheres

 Forced convection

  • Correlation-based convection for plates, spheres and cylinders in forced fluid flow

 Radiation heat transfer

  • Constant and temperature-dependent emissivity
  • Multiple radiation enclosures
  • Diffuse view (form) factor calculations with shadowing
  • Net view (form) factor calculations
  • Adaptive scheme for view (form) factor sum optimization
  • Hemicube-based view (form) factors calculation using graphics card hardware
  • Radiation patch generation to condense large element-based radiation models
  • Radiation matrix controls and parameters
  • Additional radiation request types:
    - Among group
    - Group-to-group
    - Monte Carlo calculation method
    - Enhanced radiation with Ray Tracing

 Initial conditions

  • Starting temperatures for both steady-state and transient
  • Starting temperatures from previous solution results, from file

 Solver solution attributes

  • Restart conditions
  • Cyclic convergence criteria
  • Direct access to solver parameters
  • Solver convergence criteria and relaxation factors
  • Solver monitor with solution convergence and attributes
  • Intermediate results display and recovery directly from solver progress monitor
  • Open Architecture (user subroutines)
  • Support to include external files

 Other features

  • Results Reporter
  • Summary of results to MS® Excel worksheets
  • Heat flow calculation between groups
  • Heat maps
  • Complete or partial deactivation of selected elements (for radiation form factors calculations)
  • Temperature mapping for Nastran FE models

 Results post-processing

  • Temperatures
  • Temperature gradient
  • Total load and flux
  • Conductive flux
  • Convective flux
  • Convection coefficients
  • Residual
  • Heat map
  • View factor sum


SÍGUENOS EN: Blog de "FEMAP y NX Nastran" en WordPress

Ir a la Página de Inicio
Atrás ] Arriba ]
Productos | Soporte | Consultoría | Cursos | Universidad | Libros | Enlaces

Copyright © 2001 Ibérica de Ingeniería, Simulación y Análisis, S.L. -- http://www.iberisa.com --