Home » Knowledge Base » Thermal » Heat Transfer » Steady-state
On the basis of a simple wall construction consisting of a concrete wall with insulation, a stationary thermal calculation is carried out. Different temperatures are applied to the inner and outer wall surface.
Keywords
*BOUNDARY_TEMPERATURE_SET
*CONTROL_SOLUTION
*CONTROL_TERMINATION
*CONTROL_THERMAL_SOLVER
*DATABASE_BINARY_D3PLOT
*DATABASE_TPRINT
*ELEMENT_SOLID
*END
*INCLUDE
*INITIAL_TEMPERATURE_SET
*KEYWORD
*MAT_THERMAL_ISOTROPIC
*NODE
*PART
*SECTION_SOLID
*SET_NODE_LIST_TITLE
*TITLE
*KEYWORD
$
$=============================CONTROL DEFINITIONS ==============================
$
*TITLE
steady-state heat transfer through an insulated concrete wall
*CONTROL_SOLUTION
$ thermal only
$ soln nlq isnan lcint lcacc ncdcf
1
*CONTROL_THERMAL_SOLVER
$ steady-state thermal analysis
$ atype ptype solver cgtol gpt eqheat fwork sbc
0 0 1
*CONTROL_TERMINATION
$ endtim endcyc dtmin endeng endmas nosol
1.
$
$================================ OUTPUTDATA ===================================
$
*DATABASE_BINARY_D3PLOT
$ dt
1.0
*DATABASE_GLSTAT
$ dt
1.0
*DATABASE_MATSUM
$ dt
1.0
*DATABASE_TPRINT
$ dt
1.0
$
$============================== PART DEFINITIONS ===============================
$
*PART
$ title
concrete
$ pid secid mid eosid hgid grav adpopt tmid
1 1 0 0 0 0 0 1
*PART
$ title
insulation
$ pid secid mid eosid hgid grav adpopt tmid
2 1 0 0 0 0 0 2
$
$============================= SECTION PROPERTIES ==============================
$
*SECTION_SOLID
$ secid elform
1 1
$
$======================== THERMAL MATERIAL PROPERTIES ==========================
$
*MAT_THERMAL_ISOTROPIC
$ material concrete
$ tmid tro tgrlc tgmult tlat hlat
1 2.4e-9
$ hc tc
8.80e8 2.1
*MAT_THERMAL_ISOTROPIC
$ material insulation
$ tmid tro tgrlc tgmult tlat hlat
2 1.0e-10
$ hc tc
9.0e8 0.04
$
$======================== NODE/ELEMENT/SET DEFINTIONS ==========================
$
*INCLUDE
01_insulated_concrete_wall_parts.k
*SET_NODE_LIST_TITLE
inside
$ sid da1 da2 da3 da4 solver
1 0.0 0.0 0.0 0.0MECH
$ nid1 nid2 nid3 nid4 nid5 nid6 nid7 nid8
22 1 64 85 43 106 127 148
169 0 0 0 0 0 0 0
*SET_NODE_LIST_TITLE
outside
$ sid da1 da2 da3 da4 solver
2 0.0 0.0 0.0 0.0MECH
$ nid1 nid2 nid3 nid4 nid5 nid6 nid7 nid8
394 230 271 353 312 435 517 476
558 0 0 0 0 0 0 0
$
$==================== THERMAL BOUNDARY and INITIAL CONDITIONS ==================
$
*INITIAL_TEMPERATURE_SET
$ nid/sid temp loc
0 293.15
*BOUNDARY_TEMPERATURE_SET
$ nid/sid tlcid tmult loc tdeath tbirth
1 0 20.0
2 0 10.0
$
*END
Animated Result
Download
