thermal Module

class pyNastran.bdf.cards.thermal.thermal.CHBDYE(eid, eid2, side, iview_front=0, iview_back=0, rad_mid_front=0, rad_mid_back=0, comment='')

Bases: pyNastran.bdf.cards.thermal.thermal.ThermalElement

Defines a boundary condition surface element with reference to a heat conduction element.

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CHBDYE	EID	EID2	SIDE	IVIEWF	IVIEWB	RADMIDF	RADMIDB

Creates a CHBDYE card

Parameters:

eid : int

surface element ID number for a side of an element

eid2: int

a heat conduction element identification

side: int

a consistent element side identification number (1-6)

iview_front: int; default=0

a VIEW entry identification number for the front face

iview_back: int; default=0

a VIEW entry identification number for the back face

rad_mid_front: int; default=0

RADM identification number for front face of surface element

rad_mid_back: int; default=0

RADM identification number for back face of surface element

comment : str; default=’‘

a comment for the card

Eid(self)

Eid2(self)

Pid(self)

classmethod _init_from_empty()

_properties = ['hex_map', 'pent_map', 'tet_map', 'side_maps']

classmethod add_card(card, comment='')

Adds a CHBDYE card from BDF.add_card(...)

Parameters:

card : BDFCard()

a BDFCard object

comment : str; default=’‘

a comment for the card

cross_reference(self, model)

eid = None

Surface element ID number for a side of an element. (0 < Integer < 100,000,000)

eid2 = None

A heat conduction element identification

get_edge_ids(self)

hex_map = {1: [4, 3, 2, 1], 2: [1, 2, 6, 5], 3: [2, 3, 7, 6], 4: [3, 4, 8, 7], 5: [4, 1, 5, 8], 6: [5, 6, 7, 8]}

iview_back = None

A VIEW entry identification number for the back face

iview_front = None

A VIEW entry identification number for the front face

node_ids

nodes

pent_map = {1: [3, 2, 1], 2: [1, 2, 5, 4], 3: [2, 3, 6, 5], 4: [3, 1, 4, 6], 5: [4, 5, 6]}

rad_mid_back = None

RADM identification number for back face of surface element (Integer > 0)

rad_mid_front = None

RADM identification number for front face of surface element (Integer > 0)

raw_fields(self)

repr_fields(self)

Todo

is this done

safe_cross_reference(self, model, xref_errors)

side = None

A consistent element side identification number (1 < Integer < 6)

side_maps = {'CHEXA': {1: [4, 3, 2, 1], 2: [1, 2, 6, 5], 3: [2, 3, 7, 6], 4: [3, 4, 8, 7], 5: [4, 1, 5, 8], 6: [5, 6, 7, 8]}, 'CPENTA': {1: [3, 2, 1], 2: [1, 2, 5, 4], 3: [2, 3, 6, 5], 4: [3, 1, 4, 6], 5: [4, 5, 6]}, 'CQUAD4': [1, 2, 3, 4], 'CTETRA': {1: [1, 3, 2], 2: [1, 2, 4], 3: [2, 3, 4], 4: [3, 1, 4]}, 'CTRIA3': [1, 2, 3]}

tet_map = {1: [1, 3, 2], 2: [1, 2, 4], 3: [2, 3, 4], 4: [3, 1, 4]}

type = 'CHBDYE'

uncross_reference(self)

Removes cross-reference links

write_card(self, size=8, is_double=False)

The writer method used by BDF.write_card()

Parameters:

size : int; default=8

the size of the card (8/16)

class pyNastran.bdf.cards.thermal.thermal.CHBDYG(eid, surface_type, nodes, iview_front=0, iview_back=0, rad_mid_front=0, rad_mid_back=0, comment='')

Bases: pyNastran.bdf.cards.thermal.thermal.ThermalElement

Defines a boundary condition surface element without reference to a property entry.

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CHBDYG	EID		TYPE	IVIEWF	IVIEWB	RADMIDF	RADMIDB
	G1	G2	G3	G4	G5	G6	G7	G8

Eid(self)

classmethod _init_from_empty()

_properties = ['node_ids']

classmethod add_card(card, comment='')

Adds a CHBDYG card from BDF.add_card(...)

Parameters:

card : BDFCard()

a BDFCard object

comment : str; default=’‘

a comment for the card

cross_reference(self, model)

Cross links the card so referenced cards can be extracted directly

Parameters:

model : BDF()

the BDF object

eid = None

Surface element ID

get_edge_ids(self)

iview_back = None

A VIEW entry identification number for the back face

iview_front = None

A VIEW entry identification number for the front face

node_ids

nodes = None

Grid point IDs of grids bounding the surface (Integer > 0)

rad_mid_back = None

RADM identification number for back face of surface element (Integer > 0)

rad_mid_front = None

RADM identification number for front face of surface element (Integer > 0)

raw_fields(self)

repr_fields(self)

Gets the fields in their simplified form

Returns:

fields : List[varies]

the fields that define the card

safe_cross_reference(self, model, xref_errors)

surface_type = None

Surface type

type = 'CHBDYG'

uncross_reference(self)

Removes cross-reference links

validate(self)

card checking method that should be overwritten

write_card(self, size=8, is_double=False)

The writer method used by BDF.write_card()

Parameters:

size : int; default=8

the size of the card (8/16)

class pyNastran.bdf.cards.thermal.thermal.CHBDYP(eid, pid, surface_type, g1, g2, g0=0, gmid=None, ce=0, iview_front=0, iview_back=0, rad_mid_front=0, rad_mid_back=0, e1=None, e2=None, e3=None, comment='')

Bases: pyNastran.bdf.cards.thermal.thermal.ThermalElement

Defines a boundary condition surface element with reference to a PHBDY entry

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CHBDYP	EID	PID	TYPE	IVIEWF	IVIEWB	G1	G2	G0
	RADMIDF	RADMIDB	GMID	CE	E1	E2	E3

Creates a CHBDYP card

Parameters:

eid : int

Surface element ID

pid : int

PHBDY property entry identification numbers. (Integer > 0)

surface_type : str

Surface type Must be {POINT, LINE, ELCYL, FTUBE, TUBE}

iview_front : int; default=0

A VIEW entry identification number for the front face.

iview_back : int; default=0

A VIEW entry identification number for the back face.

g1 / g2 : int

Grid point identification numbers of grids bounding the surface

g0 : int; default=0

Orientation grid point

rad_mid_front : int

RADM identification number for front face of surface element

rad_mid_back : int

RADM identification number for back face of surface element.

gmid : int

Grid point identification number of a midside node if it is used with the line type surface element.

ce : int; default=0

Coordinate system for defining orientation vector

e1 / e2 / e3 : float; default=None

Components of the orientation vector in coordinate system CE. The origin of the orientation vector is grid point G1.

comment : str; default=’‘

a comment for the card

Ce(self)

gets the coordinate system, CE

Eid(self)

Pid(self)

Type

_finalize_hdf5(self, encoding)

hdf5 helper function

classmethod _init_from_empty()

_properties = ['node_ids']

classmethod add_card(card, comment='')

Adds a CHBDYP card from BDF.add_card(...)

Parameters:

card : BDFCard()

a BDFCard object

comment : str; default=’‘

a comment for the card

ce = None

Coordinate system for defining orientation vector. (Integer > 0; Default = 0

cross_reference(self, model)

Cross links the card so referenced cards can be extracted directly

Parameters:

model : BDF()

the BDF object

e1 = None

Components of the orientation vector in coordinate system CE. The origin of the orientation vector is grid point G1. (Real or blank)

eid = None

Surface element ID

g0 = None

Orientation grid point. (Integer > 0; Default = 0)

g1 = None

Grid point identification numbers of grids bounding the surface. (Integer > 0)

g2 = None

Grid point identification numbers of grids bounding the surface. (Integer > 0)

gmid = None

Grid point identification number of a midside node if it is used with the line type surface element.

iview_back = None

A VIEW entry identification number for the back face.

iview_front = None

A VIEW entry identification number for the front face.

node_ids

nodes

pid = None

PHBDY property entry identification numbers. (Integer > 0)

rad_mid_back = None

RADM identification number for back face of surface element. (Integer > 0)

rad_mid_front = None

RADM identification number for front face of surface element. (Integer > 0)

raw_fields(self)

repr_fields(self)

Gets the fields in their simplified form

Returns:

fields : List[varies]

the fields that define the card

safe_cross_reference(self, model, xref_errors)

type = 'CHBDYP'

uncross_reference(self)

Removes cross-reference links

write_card(self, size=8, is_double=False)

The writer method used by BDF.write_card()

Parameters:

size : int; default=8

the size of the card (8/16)

class pyNastran.bdf.cards.thermal.thermal.CONV(eid, pconid, ta, film_node=0, cntrlnd=0, comment='')

Bases: pyNastran.bdf.cards.thermal.thermal.ThermalBC

Specifies a free convection boundary condition for heat transfer analysis through connection to a surface element (CHBDYi entry).

Creates a CONV card

Parameters:

eid : int

element id

pconid : int

Convection property ID

mid : int

Material ID

ta : List[int]

Ambient points used for convection 0’s are allowed for TA2 and higher

film_node : int; default=0

Point for film convection fluid property temperature

cntrlnd : int; default=0

Control point for free convection boundary condition

comment : str; default=’‘

a comment for the card

Eid(self)

TA(self, i=None)

classmethod _init_from_empty()

classmethod add_card(card, comment='')

Adds a CONV card from BDF.add_card(...)

Parameters:

card : BDFCard()

a BDFCard object

comment : str; default=’‘

a comment for the card

cntrlnd = None

Control point for free convection boundary condition.

cross_reference(self, model)

Cross links the card so referenced cards can be extracted directly

Parameters:

model : BDF()

the BDF object

eid = None

CHBDYG, CHBDYE, or CHBDYP surface element identification number. (Integer > 0)

film_node = None

Point for film convection fluid property temperature

pconid = None

Convection property identification number of a PCONV entry

raw_fields(self)

repr_fields(self)

Gets the fields in their simplified form

Returns:

fields : List[varies]

the fields that define the card

type = 'CONV'

uncross_reference(self)

Removes cross-reference links

write_card(self, size=8, is_double=False)

The writer method used by BDF.write_card()

Parameters:

size : int; default=8

the size of the card (8/16)

class pyNastran.bdf.cards.thermal.thermal.CONVM(eid, pconvm, ta1, film_node=0, cntmdot=0, ta2=None, mdot=1.0, comment='')

Bases: pyNastran.bdf.cards.thermal.thermal.ThermalBC

Specifies a forced convection boundary condition for heat transfer analysis through connection to a surface element (CHBDYi entry).

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CONVM	EID	PCONID	FLMND	CNTMDOT	TA1	TA2	Mdot
CONVM	101	1	201	301	20	21

Creates a CONVM card

Parameters:

eid : int

element id (CHBDYP)

pconid : int

property ID (PCONVM)

mid : int

Material ID

ta1 : int

ambient point for convection

ta2 : int; default=None

None : ta1 ambient point for convection

film_node : int; default=0

cntmdot : int; default=0

control point used for controlling mass flow 0/blank is only allowed when mdot > 0

mdot : float; default=1.0

a multiplier for the mass flow rate in case there is no point associated with the CNTRLND field required if cntmdot = 0

comment : str; default=’‘

a comment for the card

Eid(self)

classmethod _init_from_empty()

_properties = ['film_node_id', 'pconvm_id']

classmethod add_card(card, comment='')

Adds a CONVM card from BDF.add_card(...)

Parameters:

card : BDFCard()

a BDFCard object

comment : str; default=’‘

a comment for the card

cross_reference(self, model)

Cross links the card so referenced cards can be extracted directly

Parameters:

model : BDF()

the BDF object

film_node_id

pconvm_id

raw_fields(self)

repr_fields(self)

Gets the fields in their simplified form

Returns:

fields : List[varies]

the fields that define the card

type = 'CONVM'

write_card(self, size=8, is_double=False)

The writer method used by BDF.write_card()

Parameters:

size : int; default=8

the size of the card (8/16)

class pyNastran.bdf.cards.thermal.thermal.PCONV(pconid, mid=None, form=0, expf=0.0, ftype=0, tid=None, chlen=None, gidin=None, ce=0, e1=None, e2=None, e3=None, comment='')

Bases: pyNastran.bdf.cards.thermal.thermal.ThermalProperty

Specifies the free convection boundary condition properties of a boundary condition surface element used for heat transfer analysis.

Format (MSC 2005.2)

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PCONV	PCONID	MID	FORM	EXPF	FTYPE	TID
	CHLEN	GIDIN	CE	E1	E2	E3
PCONV	38	21	2	54
	2.0	235	0	1.0	0.0	0.0

Alternate format (MSC 2005.2):

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PCONV	PCONID	MID	FORM	EXPF	3	H1	H2	H3
	H4	H5	H6	H7	H8
PCONV	7	3	10.32	10.05	10.09
	10.37

Todo

alternate format is not supported; NX not checked

Creates a PCONV card

Parameters:

pconid : int

Convection property ID

mid : int

Material ID

form : int; default=0

Type of formula used for free convection Must be {0, 1, 10, 11, 20, or 21}

expf : float; default=0.0

Free convection exponent as implemented within the context of the particular form that is chosen

ftype : int; default=0

Formula type for various configurations of free convection

tid : int; default=None

Identification number of a TABLEHT entry that specifies the two variable tabular function of the free convection heat transfer coefficient

chlen : float; default=None

Characteristic length

gidin : int; default=None

Grid ID of the referenced inlet point

ce : int; default=0

Coordinate system for defining orientation vector.

e1 / e2 / e3 : List[float]; default=None

Components of the orientation vector in coordinate system CE. The origin of the orientation vector is grid point G1

comment : str; default=’‘

a comment for the card

Ce(self)

gets the coordinate system, CE

Gidin(self)

gets the grid input node, gidin

classmethod _init_from_empty()

classmethod add_card(card, comment='')

Adds a PCONV card from BDF.add_card(...)

Parameters:

card : BDFCard()

a BDFCard object

comment : str; default=’‘

a comment for the card

ce = None

Coordinate system for defining orientation vector. (Integer > 0;Default = 0

chlen = None

Characteristic length

cross_reference(self, model)

e1 = None

Components of the orientation vector in coordinate system CE. The origin of the orientation vector is grid point G1. (Real or blank)

expf = None

Free convection exponent as implemented within the context of the particular form that is chosen

form = None

Type of formula used for free convection. (Integer 0, 1, 10, 11, 20, or 21)

ftype = None

Formula type for various configurations of free convection

gidin = None

Grid ID of the referenced inlet point

mid = None

Material property identification number. (Integer > 0)

pconid = None

Convection property identification number. (Integer > 0)

raw_fields(self)

repr_fields(self)

Gets the fields in their simplified form

Returns:

fields : List[varies]

the fields that define the card

tid = None

Identification number of a TABLEHT entry that specifies the two variable tabular function of the free convection heat transfer coefficient

type = 'PCONV'

uncross_reference(self)

Removes cross-reference links

write_card(self, size=8, is_double=False)

The writer method used by BDF.write_card()

Parameters:

size : int; default=8

the size of the card (8/16)

class pyNastran.bdf.cards.thermal.thermal.PCONVM(pconid, mid, coeff, form=0, flag=0, expr=0.0, exppi=0.0, exppo=0.0, comment='')

Bases: pyNastran.bdf.cards.thermal.thermal.ThermalProperty

Specifies the free convection boundary condition properties of a boundary condition surface element used for heat transfer analysis.

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PCONVM	PCONID	MID	FORM	FLAG	COEF	EXPR	EXPPI	EXPPO
PCONVM	3	2	1	1	0.023	0.80	0.40	0.30

Creates a PCONVM card

Parameters:

pconid : int

Convection property ID

mid: int

Material ID

coeff: float

Constant coefficient used for forced convection

form: int; default=0

Type of formula used for free convection Must be {0, 1, 10, 11, 20, or 21}

flag: int; default=0

Flag for mass flow convection

expr: float; default=0.0

Reynolds number convection exponent

exppi: float; default=0.0

Prandtl number convection exponent for heat transfer into the working fluid

exppo: float; default=0.0

Prandtl number convection exponent for heat transfer out of the working fluid

comment : str; default=’‘

a comment for the card

classmethod _init_from_empty()

classmethod add_card(card, comment='')

Adds a PCONVM card from BDF.add_card(...)

Parameters:

card : BDFCard()

a BDFCard object

comment : str; default=’‘

a comment for the card

coef = None

Constant coefficient used for forced convection

exppi = None

Prandtl number convection exponent for heat transfer into the working fluid. (Real > 0.0; Default = 0.0)

exppo = None

Prandtl number convection exponent for heat transfer out of the working fluid. (Real > 0.0; Default = 0.0)

expr = None

Reynolds number convection exponent. (Real > 0.0; Default = 0.0)

flag = None

Flag for mass flow convection. (Integer = 0 or 1; Default = 0)

form = None

Type of formula used for free convection. (Integer 0, 1, 10, 11, 20, or 21)

mid = None

Material property identification number. (Integer > 0)

pconid = None

Convection property identification number. (Integer > 0)

raw_fields(self)

repr_fields(self)

Gets the fields in their simplified form

Returns:

fields : List[varies]

the fields that define the card

type = 'PCONVM'

uncross_reference(self)

Removes cross-reference links

write_card(self, size=8, is_double=False)

The writer method used by BDF.write_card()

Parameters:

size : int; default=8

the size of the card (8/16)

class pyNastran.bdf.cards.thermal.thermal.PHBDY(pid, af=None, d1=None, d2=None, comment='')

Bases: pyNastran.bdf.cards.thermal.thermal.ThermalProperty

A property entry referenced by CHBDYP entries to give auxiliary geometric information for boundary condition surface elements

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PHBDY	PID	AF	D1	D2
PHBDY	2	0.02	1.0	1.0

Creates a PHBDY card

Parameters:

eid : int

element id

pid : int

property id

af : int

Area factor of the surface used only for CHBDYP element Must be {POINT, LINE, TUBE, ELCYL} TUBE : constant thickness of hollow tube

d1, d2 : float; default=None

Diameters associated with the surface Used with CHBDYP [ELCYL, TUBE, FTUBE] surface elements

comment : str; default=’‘

a comment for the card

classmethod _init_from_empty()

classmethod add_card(card, comment='')

Adds a PHBDY card from BDF.add_card(...)

Parameters:

card : BDFCard()

a BDFCard object

comment : str; default=’‘

a comment for the card

af = None

Area factor of the surface used only for CHBDYP element TYPE = ‘POINT’, TYPE = ‘LINE’, TYPE = ‘TUBE’, or TYPE = ‘ELCYL’. For TYPE = ‘TUBE’, AF is the constant thickness of the hollow tube. (Real > 0.0 or blank)

d1 = None

Diameters associated with the surface. Used with CHBDYP element TYPE=’ELCYL’,’TUBE’,’FTUBE’

pid = None

Property identification number. (Unique Integer among all PHBDY entries). (Integer > 0)

raw_fields(self)

repr_fields(self)

Gets the fields in their simplified form

Returns:

fields : List[varies]

the fields that define the card

type = 'PHBDY'

uncross_reference(self)

Removes cross-reference links

write_card(self, size=8, is_double=False)

The writer method used by BDF.write_card()

Parameters:

size : int; default=8

the size of the card (8/16)

class pyNastran.bdf.cards.thermal.thermal.TEMPBC(sid, Type, nodes, temps, comment='')

Bases: pyNastran.bdf.cards.thermal.thermal.ThermalBC

classmethod _init_from_empty()

_properties = ['eid']

classmethod add_card(card, comment='')

Adds a TEMPBC card from BDF.add_card(...)

Parameters:

card : BDFCard()

a BDFCard object

comment : str; default=’‘

a comment for the card

eid

raw_fields(self)

type = 'TEMPBC'

write_card(self, size=8, is_double=False)

The writer method used by BDF.write_card()

Parameters:

size : int; default=8

the size of the card (8/16)

class pyNastran.bdf.cards.thermal.thermal.ThermalBC

Bases: pyNastran.bdf.cards.thermal.thermal.ThermalCard

class pyNastran.bdf.cards.thermal.thermal.ThermalCard

Bases: pyNastran.bdf.cards.base_card.BaseCard

cross_reference(self, model)

class pyNastran.bdf.cards.thermal.thermal.ThermalElement

Bases: pyNastran.bdf.cards.thermal.thermal.ThermalCard

class pyNastran.bdf.cards.thermal.thermal.ThermalProperty

Bases: pyNastran.bdf.cards.thermal.thermal.ThermalCard