/CONVEC

Block Format Keyword Describes the free or forced convective flux.

Format

(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
/CONVEC/convec_ID/unit_ID
convec_flux_title
surf_IDT fct_IDT sens_ID              
Ascalex Fscaley Tstart Tstop H

Definition

Field Contents SI Unit Example
convec_ID Free or forced convective flux block identifier.

(Integer, maximum 10 digits)

 
unit_ID Unit Identifier.

(Integer, maximum 10 digits)

 
convec_flux_title Free or forced convective flux block title.

(Character, maximum 100 characters)

 
surf_IDT Surface identifier.

(Integer)

 
fct_IDT Time function identifier for definition temperature in infinite room T inf ( t i m e ) .

(Integer)

 
sens_ID Sensor identifier.

(Integer)

 
Ascalex Abscissa (time) scale factor for fct_IDT.

Default = 1.0 (Real)

[ s ]
Fscaley Ordinate (temperature) scale factor for fct_IDT.

Default = 1.0 (Real)

[ K ]
Tstart Start time.

(Real)

[ s ]
Tstop Stop time.

Default = 1030 (Real)

[ s ]
H Heat transfer coefficient.

(Real)

[ W m 2 K ]

Example (Thermal Loading)

#RADIOSS STARTER
#---1----|----2----|----3----|----4----|----5----|----6----|----7----|----8----|----9----|---10----|
/UNIT/11
unit for convection load
                kg                   m                   s
#---1----|----2----|----3----|----4----|----5----|----6----|----7----|----8----|----9----|---10----|
/CONVEC/1/11
convect with ambient air 
#  SURF_ID    FCT_ID   SENS_ID
         4      2002         0
#             ASCALE              FSCALE              TSTART               TSTOP                   H
                   0                   0                   0                   0                 100
#---1----|----2----|----3----|----4----|----5----|----6----|----7----|----8----|----9----|---10----|
/FUNCT/2002
temperature of ambient air (with constant temperature 293K)
#                  X                   Y
                   0                 293
                   1                 293
#---1----|----2----|----3----|----4----|----5----|----6----|----7----|----8----|----9----|---10----|
#ENDDATA

Comments

  1. The convective flux is calculated using:
    (1)
    Q ˙ = H ( T T inf ( t i m e ) )

    Where, T is the temperature (unit K).

  2. /CONVEC is not compatible with ALE applications (/ALE, /EULER). Thermal convection will not be applied to ALE nodes or ALE elements.