THERMAL

I/O Options and Subcase Information Entry The THERMAL command can be used in the I/O Options or Subcase Information sections to request temperature output for all heat transfer analysis subcases or individual heat transfer analysis subcases, respectively.

Format

THERMAL (sorting, format_list), THRESH=thresh, RTHRESH=rthresh, TOP=topn, RTOP=rtop, SUBSYS=SUBSYS_ID)= option

Definitions

Argument	Options	Description
`sorting`	<SORT1, SORT2, blank>	Only applies to the PUNCH format (.pch format) for Transient Heat Transfer Subcase. It will be ignored without warning, if used elsewhere. SORT1 Results for each timestep are grouped together. SORT2 (Default) Results for each Grid/Element are grouped together. blank SORT2 is the default for transient heat transfer analysis.
`format`	<PUNCH, OP2, PLOT, H3D, blank>	PUNCH Results are output in Nastran punch results format (.pch file). OP2 Results are output in Nastran output2 format (.op2 file). 6 PLOT Results are output in Nastran output2 format (.op2 file) when PARAM,POST is defined in the Bulk Data section. H3D Results are output in Hyper3D format (.h3d file). blank (Default) Results are output in all active formats for which the result is available.
`THRESH`	<thresh> Real Default = blank	Specifies an absolute threshold under which temperature results should not be output. 7
`RTHRESH`	<rthresh> 0.0 < Real < 1.0 Default = blank	Specifies a relative threshold, as a fraction of the maximum temperature, under which results should not be output. For example, if T is the maximum temperature in the model, then temperature results below T*rthresh are excluded from the output.
`TOP`	<topn> Integer > 0 Default = blank	Only the top "topn" temperature values should be output.
`RTOP`	<rtop> 0.0 < Real < 1.0 Default = blank	Only the top fraction "rtop" of the total number of temperature values should be output. For example, if TTOT is the total number of temperature values in the model, then only the top TTOT*rtop values are output.
`SUBSYS`	<`SUBSYS_ID`> No default	ID of the subsystem. When used along a subsystem definition, this option generates an individual result file for each subsystem with results for that subsystem only. For more information, refer to the SET Bulk Data Entry.
`option`	<YES, ALL, NO, NONE, SID> Default = ALL	YES, ALL, blank Thermal results are output at all grid points for which temperature results are available. NO, NONE Thermal results are not output. SID If a set ID is specified, Thermal results are output only for grid points referenced by that set.

Comments

Thermal output is only available for the heat transfer analysis solution sequence.
The PUNCH output produces TEMP Bulk Data Entries, and the SID on the entries will be the subcase number (=1 if no SUBCASES are specified).
Multiple formats are allowed on the same entry; these should be comma separated. If a format is not specified, this output control applies to all formats defined by the OUTPUT command, for which the result is available.
Temperature output via the THERMAL output request is available for both Linear Steady-State Heat Transfer and Linear Transient Heat Transfer Analyses.
Multiple instances of this card are allowed. If instances are conflicting, the last instance dominates.
format=OUTPUT2 can also be used to request results to be output in the Nastran output2 format (.op2 file).
The threshold options (THRESH, RTHRESH, TOP, and RTOP) are available for Thermal and Transient Thermal Analyses only. Transient Thermal Analysis is not supported in OP2 format. SORT1 option should be specified for PUNCH file output to be used in HFILE-based Nonlinear One Step Transient Thermal Stress Analysis (NL-OSTTS). For H3D, the filter is applied to each dimension of elements (shells, solids, beams, welds, etc.), while for OP2 and PUNCH, it is applied to each element type (quad4, tria3, quad8, etc.).