Gap conductance

Elements tested

CPEG4T

C3D8RT

C3D8T

DC3D8

DC3D10

DCC3D8

SC8RT

S4RT

Problem description

The tests in this section are set up as cases of uniform one-dimensional heat flux using generalized plane strain (Abaqus/Standard only), and three-dimensional elements. In all Abaqus/Standard cases a steady-state heat transfer analysis is performed. In Abaqus/Explicit a transient analysis is performed for each case, with a simulation time chosen to ensure that steady-state conditions are reached in this problem. Particular values (gap clearance, predefined field variables, etc.) vary during the solution, which in turn influence the conductivity across the interface and, thus, the solution.

Results and discussion

The results match the exact solutions.

Input files

Abaqus/Standard input files

mgcgco1ctug.inp: Gap clearance-dependent conductivity, CPEG4T elements.
mgcgpo1ctug.inp: Gap pressure-dependent conductivity, CPEG4T elements.
mgcgco1ctus.inp: Gap clearance-dependent conductivity, C3D8T elements.
mgcgpo1ctus.inp: Gap pressure-dependent conductivity, C3D8T elements.
mgcgcd1ctus.inp: Field-variable-dependent conductivity, DC3D8 elements.
mgcoot1hts.inp: Gap temperature-dependent conductivity, DC3D8 elements.
mgcood1hts.inp: Gap field-variable-dependent conductivity, DC3D8 elements.
mgcmfo1hts.inp: Gap mass-flow-rate-dependent conductivity, DCC3D8 elements.
mdc3d10_tdgc_stos_hts.inp: Gap temperature-dependent conductivity, DC3D10 elements.

Abaqus/Explicit input files

gapclearcond_x_c3d8rt.inp: Gap clearance-dependent conductivity, C3D8RT elements.
gapclearcond_x_sc8rt.inp: Gap clearance-dependent conductivity, SC8RT elements.
gappresscond_x_c3d8rt.inp: Gap pressure-dependent conductivity, C3D8RT elements.
gappresscond_x_sc8rt.inp: Gap pressure-dependent conductivity, SC8RT elements.
gapfvcond_x_c3d8rt.inp: Field-variable-dependent conductivity using contact pairs, C3D8RT elements.
gapfvcond_x_gcont_c3d8rt.inp: Field-variable-dependent conductivity using general contact, C3D8RT elements.
gapclearcond_x_c3d8t.inp: Gap clearance-dependent conductivity, C3D8T elements.
gappresscond_x_c3d8t.inp: Gap pressure-dependent conductivity using contact pairs, C3D8T elements.
gappresscond_x_gcont_c3d8t.inp: Gap pressure-dependent conductivity using general contact, C3D8T elements.
gapfvcond_x_c3d8t.inp: Field-variable-dependent conductivity, C3D8T elements.
gapclearanl_x_gcont_c3d8rt.inp: Gap clearance-dependent conductivity with analytical rigid surface using general contact, C3D8RT elements.
gapclearcond_x_gcont_s4rt.inp: Gap clearance-dependent conductivity using general contact, S4RT elements.