김경종
61 lines
2.7 KiB
Markdown
61 lines
2.7 KiB
Markdown
---
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type: concept
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title: "Abaqus Cavity Radiation Interactions"
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complexity: advanced
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domain: computational-mechanics
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created: 2026-06-01
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updated: 2026-06-01
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address: c-000128
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aliases:
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- Abaqus cavity radiation
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- Abaqus enclosure radiation
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- Abaqus radiation view factors
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tags:
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- concept
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- finite-element-method
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- abaqus
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- heat-transfer
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- radiation
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- interactions
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status: current
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related:
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- "[[Abaqus-Analysis-User-s-Guide-Volume-V|Abaqus Analysis User's Guide Volume V]]"
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- "[[Finite Element Heat Transfer and Field Problems]]"
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- "[[Abaqus Thermal Expansion and Damping Materials]]"
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- "[[Abaqus Multiphysics Coupling and Co-simulation]]"
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- "[[Abaqus Surface and Assembly Modeling]]"
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- "[[Abaqus Resource and Parallel Execution]]"
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sources:
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- "[[Abaqus-Analysis-User-s-Guide-Volume-V|Abaqus Analysis User's Guide Volume V]]"
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---
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# Abaqus Cavity Radiation Interactions
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## Definition
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Abaqus cavity radiation interactions model radiative heat transfer among surfaces in an enclosure using view factors, emissivity, and Stefan-Boltzmann radiation.
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## How They Work
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Cavities are collections of element-based surfaces with radiation properties. Each surface has emissivity, and the model must define physical constants such as the Stefan-Boltzmann constant and absolute zero. Cavities can be closed or open to an ambient environment.
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Abaqus/Standard computes view factor matrices based on the geometric relationship between facets. Surface blocking, symmetry, surface motion, open cavities, and temperature-dependent emissivity can be included. Because cavity radiation equations are nonsymmetric and nonlinear, the solver may invoke nonsymmetric storage and additional view factor updates.
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Large cavities can be decomposed for parallel view factor calculation and radiation equation solution, but the view factor matrix can be expensive in memory and computation.
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## Why It Matters
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Cavity radiation is a surface interaction rather than a material property or ordinary thermal load. It is appropriate when enclosure geometry, blocking, reflection, or moving surfaces matter enough that average-temperature radiation or gap radiation is insufficient.
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## Connections
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- [[Finite Element Heat Transfer and Field Problems]] supplies the thermal analysis context.
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- [[Abaqus Surface and Assembly Modeling]] provides the element-based surfaces used to construct cavities.
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- [[Abaqus Multiphysics Coupling and Co-simulation]] connects cavity radiation to sequential thermal-stress workflows.
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- [[Abaqus Resource and Parallel Execution]] matters for large view factor matrices and parallel decomposition.
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## Sources
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- [[Abaqus-Analysis-User-s-Guide-Volume-V|Abaqus Analysis User's Guide Volume V]]
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