Two-Way Radio User Manual

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SFILM
18.8
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SFILM: Define film coefficients and associated sink temperatures over a surface for
heat transfer analysis.
This option is used to provide film coefficients and sink temperatures over a surface for fully coupled thermal-
stress analysis. In ABAQUS/Standard it is also used in heat transfer and coupled thermal-electrical analyses.
Products: ABAQUS/Standard ABAQUS/Explicit
Type: History data
Level: Step
References:
•
“Thermal loads,” Section 27.4.4 of the ABAQUS Analysis User ’s Manual
•
“FILM,” Section 1.1.6 of the ABAQUS User Subroutines Reference Manual
Optional parameters:
AMPLITUDE
Set this param eter equal to the name of the
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AMPLITUDE option that gives the variation of the
sink tem perature,
, with time.
If this parameter is omitte d in an ABAQUS/Standard analysis, the reference sink temperature
is applied immediately at the beginning of the step or linearly over the step, depending on the
value assigned to the AMPLITUDE parameter on the
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STEP option (“Procedures: overview,”
Section 6.1.1 of the ABAQ US Analysis User’s Manual). If this param eter is om itted in an
ABAQUS/Explicit analysis, the reference sink temperatur e is applied immediately at the beginning
of the step.
For nonuniform films of type FNU (which are available only in ABAQUS/Standard), the
sink temperature amplitude is defined in user subroutine FILM, and A MPLITUDE references are
ignored.
FILM AMPLITUDE
Set this param eter equal to the name of the
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AMPLITUDE option that gives the variation of the
film coefficient, h,withtime.
If this parameter is omitted in an ABAQUS/Standard analysis, the reference film coefficient is
applied immediately at the beginning of the ste p and kept constant over the step, independent of the
value assigned to the AMPLITUDE parameter on the
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STEP option. If this parameter is omitted
in an ABAQUS/Explicit analysis, the reference sink temperature given on the data lines is applied
throughout the step.
18.8–1
ABAQUS Version 6.1 Module:
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