Card 9 - THERMAL

KODE

KODE = THERMAL_COUPLING (or 126) defines a thermal coupling entity.

N1

N1 is the thermal coupling card ID.

T1 = NAME

T1 = NAME (or 1) specifies the thermal coupling name in T2.

T1 = SELECTION

T1 = SELECTION (or 2) specifies that the thermal coupling is applied to a selection of elements represented by the group name in T3. The selected element is specified in T2.

T2 = PRIMARY (or 1) specifies the primary elements.
T2 = SECONDARY (or 2) specifies the secondary elements.

T1 = SIDE

T1 = SIDE specifies that the thermal coupling is applied to a side of selected elements. The selected element is specified in T2.

T2 = PRIMARY specifies the primary elements.
T2 = SECONDARY specifies the secondary elements.

The side type is indicated in T3.

T3 = TOP indicates the top side of the selected elements.
T3 = BOTTOM indicates the bottom side of the selected elements.

T1 = SIDE_FREE

T1 = SIDE_FREE specifies that the convection for the environment is applied to a side of selected elements indicated in T2.

T2 = TOP indicates the top side of the selected elements.
T2 = BOTTOM indicates the bottom side of the selected elements.
T2 = BOTH indicates the top and bottom sides of the selected elements.

T1 = TYPE

T1 = TYPE specifies the thermal coupling type in T2.

T2 = HTC specifies the heat transfer coefficient for convection between the primary elements and secondary elements.
T2 = CONDUCTIVE_GAP specifies conductances G = (k × A) / L between the primary elements and secondary elements, where L is the distance to the secondary element along the primary element's surface normal.
T2 = EDGE_CONTACT specifies an edge-to-edge conductance, G = Cl × L, between the primary elements and secondary elements, where Cl is the conductance per length, and L is the edge length.
T2 = PERFECT_CONTACT specifies a perfect contact coupling between the primary elements and secondary elements.
T2 = TOTAL_CONDUCTANCE specifies a total conductance, G, to describe the quantity of heat that flows from the hotter element to the cooler element per degree of temperature difference, between the primary and secondary elements.
T2 = TOTAL_RESISTANCE specifies a total resistance, R, to describe the temperature rise between the primary and secondary elements.
T2 = XCOND specifies a total conductance between a set of primary elements and a non-geometric element.
T2 = XRESIST specifies a total resistance between a set of primary elements and a non-geometric element.
T2 = XCONV specifies a heat transfer coefficient between a set of primary elements and a non-geometric element.
T2 = EDGE_XCONV specifies an edge-to-edge conductance between a set of primary elements and a non-geometric element.
T2 = TOTAL_CONDUCTANCE_LEGACY specifies a total conductance between the primary and secondary elements when the LEGACY_COUPLING_OVERLAP advanced parameter is defined.
T2 = TOTAL_RESISTANCE_LEGACY specifies a total resistance between the primary and secondary elements when the LEGACY_COUPLING_OVERLAP advanced parameter is defined.
T2 = AXI_SOLID_INTERFACE_SLIP specifies a conductance G = h × A between fluid and solid elements for an axisymmetric solid interface boundary condition that is defined with the slip wall treatment.
T2 = AXI_SOLID_INTERFACE_ROUGH specifies a conductance G = h × A between fluid and solid elements for an axisymmetric solid interface boundary condition that is defined with a surface roughness.
T2 = CONVECTION_TO_ENVIRONMENT specifies convection properties the software uses to model the convection to the environment.
T2 = CONVECTION_COUPLING specifies the heat transfer coefficient for convection between the convection region selection (primary selection) and the fluid ducts selection (secondary selection).
T2 = DUCT_NODE_COUPLING specifies the heat transfer coefficient for convection between the convection region selection (primary selection) and the fluid duct nodes (secondary selection).

T1 = MAGNITUDE

T1 = MAGNITUDE specifies the value of the coupling type, except for the PERFECT_CONTACT.

If the coupling type is constant, then its value is specified in T2.
If the coupling type is table dependent, then T2 is a table multiplier and T3 has the form Tn, for example, T25 where n is a table number referencing the TABTYPE or FIELDTYPE cards. The dependent variable on the TABTYPE card must be COND.
If the magnitude is calculated using an expression, then T2 is an expression multiplier and T3 has the form En, for example, E25 where n is an expression number referencing the EXPRESSION card.

T1 = METHOD

T1 = METHOD specifies the thermal coupling method in T2.

T2 = STACK specifies the stack method, which defines conductances between PCB stacks.
T2 = PROJECTIVE_INTERSECTION specifies the projective intersection method, which computes the exact overlap area between two sets of elements.
T2 = ELEMENT_SUBDIVISION specifies the element subdivision method, which defines conductances between primary and secondary elements using proximity or overlap methods.

T1 = OVERLAP_PROJECTION

T1 = OVERLAP_PROJECTION specifies the direction of overlap projection in T2.

T2 = PRIMARY specifies that the direction of overlap projection is along the normal of the primary element.
T2 = SECONDARY specifies that the direction of overlap projection is along the normal of the secondary element.
T2 = VECTOR specifies that the direction of the overlap projection is specified by a vector, where T3, T4, and T5 are the X, Y, and Z components of the vector.

T1 = RESOLUTION

T1 = RESOLUTION specifies the coupling resolution option in T2, where T2 may be ONE-TO-ONE, COARSE, MEDIUM, FINE, VERY FINE, FINEST, or RESET.

T2 = RESET specifies that no subdivision is performed, and only a single conductance is calculated for each element.

T1 = ROUGHNESS

T1 = ROUGHNESS specifies the roughness height for the axisymmetric solid interface boundary condition in T2.

T1 = FLUID_TEMPERATURE

T1 = FLUID_TEMPERATURE specifies the convecting fluid temperature for convection to the environment in T2.

T1 = MESH_CORRECTION

T1 = MESH_CORRECTION specifies the type of mesh correction that is applied to the axisymmetric solid interface boundary condition in T2.

T2 = 0 specifies no mesh correction.
T2 = 1 specifies forced convection mesh correction.
T2 = 2 specifies natural convection mesh correction.
T2 = 3 specifies automatic mesh correction.

T1 = ROT_FX

T1 = ROT_FX accounts for total temperature effects due to rotation. The ID of the referenced ROT_FX cards is specified in T2.

T1 = ADIABATIC_WALL_TEMP_FOR_HTC

T1 = ADIABATIC_WALL_TEMP_FOR_HTC specifies the calculations of adiabatic wall temperature for heat transfer as defined in T2.

T2 = TEMPERATURE specifies a value for an adiabatic wall temperature.
T2 = AUTOMATIC specifies an adiabatic wall temperature value computed by the thermal solver.the thermal solver uses the adiabatic wall temperature in heat transfer calculations as follows:

T1 = WALL_TEMP

T1 = WALL_TEMP specifies a value for an adiabatic wall temperature in T2.

If the adiabatic wall temperature is constant, then its value is specified in T2.
If it is table dependent, then T2 is a table multiplier and T3 has the form Tn (e.g. T25) where n is a table number referencing TABTYPE or FIELDTYPE cards. The dependent variable on the TABTYPE card must be NUMBER.
If the adiabatic wall temperature is calculated using an expression, then T2 is an expression multiplier and T3 has the form En (e.g. E25) where n is an expression number referencing the EXPRESSION card.

T1 = RECOVERY_FACTOR

T1 = RECOVERY_FACTOR specifies a value for the recovery factor, which is used to compute the adiabatic wall temperature, in T2.

If the recovery factor is constant, then its value is specified in T2.
If it is table dependent, then T2 is a table multiplier and T3 has the form Tn (e.g. T25) where n is a table number referencing TABTYPE or FIELDTYPE cards. The dependent variable on the TABTYPE card must be NUMBER.
If the recovery factor is calculated using an expression, then T2 is an expression multiplier and T3 has the form En (e.g. E25) where n is an expression number referencing the EXPRESSION card.

Code example

$ Thermal Coupling(1)
THERMAL_COUPLING 1 NAME "Thermal Coupling(1)"
THERMAL_COUPLING 1 SELECTION PRIMARY "Thermal Coupling(1) - Primary Region"
THERMAL_COUPLING 1 SELECTION SECONDARY "Thermal Coupling(1) - Secondary Region"
THERMAL_COUPLING 1 SIDE PRIMARY TOP
THERMAL_COUPLING 1 SIDE SECONDARY BOTTOM
THERMAL_COUPLING 1 RESOLUTION MEDIUM
THERMAL_COUPLING 1 TYPE HTC
THERMAL_COUPLING 1 MAGNITUDE  2.800000E+06
THERMAL_COUPLING 1 OVERLAP_PROJECTION VECTOR -5.773503E-01  5.773503E-01  5.773503E-01

Card 9 - THERMAL_COUPLING