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/RADIATION

/RADIATION

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/RADIATION

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Block Format Keyword

/RADIATION - Radiation to Environment

Description

Describes the imposed radiation flux to environment.

Format

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(2)

(3)

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(10)

/RADIATION/Radiative_Flux_ID/unit_ID

Radiative_Flux_title

surf_IDT

fct_IDT

sens_ID

 

 

 

 

 

 

 

Ascalex

FscaleY

Tstart

Tstop

E1

hmtoggle_plus1Flag Definition

Field

Contents

SI Unit Example

Radiative_Flux_ID

Imposed radiative flux block identifier

(Integer, maximum 10 digits)

 

unit_ID

Optional unit identifier

(Integer, maximum 10 digits)

 

Radiative_Flux_title

Imposed radiative flux block title

(Character, maximum 100 characters)

 

surf_IDT

Identifier for surface which absorbs thermal radiation

(Integer)

 

fct_IDT

Time function identifier for the temperature of heat source

(Integer)

 

sens_ID

Sensor identifier

(Integer)

 

Ascalex

Abscissa (time) scale factor for fct_IDT

Default = 1.0  (Real)

symbol_S_unit

FscaleY

Ordinate (temperature) scale factor for fct_IDT

Default = 1.0  (Real)

fail_tab_temp

Tstart

Start time

(Real)

symbol_S_unit

Tstop

Stop time

(Real)

symbol_S_unit

E1

Emissivity

No unit (Real)

 

hmtoggle_plus1Example (Thermal Loading)

#RADIOSS STARTER

#---1----|----2----|----3----|----4----|----5----|----6----|----7----|----8----|----9----|---10----|

/UNIT/12

unit for imposed radiation load

                 Mg                  mm                   s

#---1----|----2----|----3----|----4----|----5----|----6----|----7----|----8----|----9----|---10----|

/RADIATION/1/12

RADIATION from heat source

#  surf_ID    fct_ID   sens_ID

         5      2003         0

#             ASCALE              FSCALE              TSTART               TSTOP                   E

                   0                   0                   0                   0                0.15

#---1----|----2----|----3----|----4----|----5----|----6----|----7----|----8----|----9----|---10----|

/FUNCT/2003

temperature of heat source function of time

#                  X                   Y

                   0                 773

                   1                 700

#---1----|----2----|----3----|----4----|----5----|----6----|----7----|----8----|----9----|---10----|

#ENDDATA

hmtoggle_plus1Comments
1.The radiation flux is calculated using:

Where, T is the temperature of the surface (surf_IDT) which absorbs thermal radiation, and symbol is the Stefan-Boltzmann constant,

Since symbol is a constant which depends on the units, the unit system must be set correctly in /BEGIN and in the optional unit_ID which is used by the radiative flux block.

2.Thermal radiation is only compatible with the finite element formulation for heat transfer.

See Also:

Implicit Features and Compatibility Information