Code_Aster
®
Version
7.4
Titrate:
Operator
DEFI_FONC_FLUI
Date:
31/01/05
Author (S):
A. ADOBES
Key
:
U4.35.01-E
Page
:
1/8
Instruction manual
U4.3- booklet: Function HT-66/05/004/A
Organization (S):
EDF-R & D/MFTT
Instruction manual
U4.3- booklet: Function
Document: U4.35.01
Operator
DEFI_FONC_FLUI
1 Goal
To define a profile rate of flow fluid along a beam. Profiles corresponding to
“standard” profiles resulting from results experimental and used within the framework of a dynamic calculation with
taking into account of forces fluid-rubber bands.
Speeds are calculated with the nodes for which one seeks in the concept
mesh
value of the associated curvilinear X-coordinate.
Currently, it is not possible to apply a profile speed defined by
DEFI_FONC_FLUI
that on one
structure whose meshs are of type
“SEG2”
. The produced concept is of type
function
(parameter
“ABSC”
, curvilinear X-coordinate)
Code_Aster
®
Version
7.4
Titrate:
Operator
DEFI_FONC_FLUI
Date:
31/01/05
Author (S):
A. ADOBES
Key
:
U4.35.01-E
Page
:
2/8
Instruction manual
U4.3- booklet: Function HT-66/05/004/A
2 Syntax
F [function] = DEFI_FONC_FLUI
(
MESH
=
my
, [mesh]
NOEUD_INIT
=
nor
, [node]
NOEUD_FIN
=
nf
, [node]
QUICKLY = _F
(
/
PROFILE
=/“UNIFORM”
,
VALE =
/
1.
[DEFECT]
/vale,
[R]
/
PROFILE
=/“LEONARD”,
NB_BAV
=
/
0
[DEFECT]
/2
/3,
),
Interpol
=
/
“FLAX”
[DEFECT]
/“LOG”
/“NOT”,
PROL_GAUCHE =
/
“EXCLUDED” [DEFECT]
/
“LINEAR”
/
“CONSTANT”
,
PROL_DROITE =
/
“EXCLUDED” [DEFECT]
/
“LINEAR”
/
“CONSTANT”
,
INFORMATION =
/
1
[DEFECT]
/2,
TITRATE
=
titrate
, [TXM]
);
Code_Aster
®
Version
7.4
Titrate:
Operator
DEFI_FONC_FLUI
Date:
31/01/05
Author (S):
A. ADOBES
Key
:
U4.35.01-E
Page
:
3/8
Instruction manual
U4.3- booklet: Function HT-66/05/004/A
3 Operands
3.1 Operand
MESH
MESH
=
my
Name of the mesh for which the curvilinear X-coordinate is defined.
3.2 Operands
NOEUD_INIT
and
NOEUD_FIN
NOEUD_INIT = nor/NOEUD_FIN = nf
The function is defined on the whole of the mesh. Nodes
“INIT”
and
“FINE”
allow
to define the area of application of the profile speed. Apart from this area, the value of the function
is null.
3.3 Key word
QUICKLY
QUICKLY
Key word factor, it makes it possible to define the profile speed.
PROFILE
This operand, associated the operands
VALE
and
NB_BAV
, allows to define a “standard” profile:
“UNIFORM”
or
“LEONARD”
.
/
VALE = vale
Allows to define the level of the function, if the standard profile is
“UNIFORM”
.
/
NB_BAV
If the profile is of type
“LEONARD”
,
NB_BAV
a “standard” profile stored in one defines
catalog.
Note:
BAV (Vibratory Anti Bar) is a terminology related to the tubes of generator of
vapor.
NB_BAV
corresponds to the number of anti-vibratory bars being in
the area of obtaining the profile.
3.4 Operand
Interpol
Interpol
Type of interpolation of the function enters the values of parameter of the field of definition.
·
“FLAX”:
linear,
·
“LOG”:
logarithmic curve,
·
“NOT”:
one does not interpolate (and thus the program will stop if one asks
value of the function for a value of the parameter for which it
was not defined).
Code_Aster
®
Version
7.4
Titrate:
Operator
DEFI_FONC_FLUI
Date:
31/01/05
Author (S):
A. ADOBES
Key
:
U4.35.01-E
Page
:
4/8
Instruction manual
U4.3- booklet: Function HT-66/05/004/A
3.5 Operands
PROL_GAUCHE
and
PROL_DROITE
PROL_GAUCHE/PROL_DROITE
Define the type of prolongation on the left (respectively on the right) of the field of definition
parameter.
·
“LINEAR”:
the function is prolonged on the left (on the right) by a segment
of the same line slope than on the lower terminal (higher)
field of definition of the parameter,
·
“EXCLUDED”:
the extrapolation of the function apart from the field of
definition of the parameter is prohibited,
·
“CONSTANT”:
the function is prolonged on the left (on the right) by the value
that it takes on the lower terminal (higher) field of
definition of the parameter.
3.6 Operand
INFORMATION
INFORMATION
Level of impression.
·
INFORMATION = 1:
no impression,
·
INFORMATION = 2:
one prints in the file
MESSAGE
the name of the function, it
a number of points of definition, the name of the parameter, the name
result, options of prolongation and interpolation and
the first 10 values of the function, in the ascending order
parameter.
3.7 Operand
TITRATE
TITRATE
=
titrate
Argument of the text type defining the title attached to the concept
function
at exit.
Code_Aster
®
Version
7.4
Titrate:
Operator
DEFI_FONC_FLUI
Date:
31/01/05
Author (S):
A. ADOBES
Key
:
U4.35.01-E
Page
:
5/8
Instruction manual
U4.3- booklet: Function HT-66/05/004/A
4
Presentation of the standard profiles speed
They are defined in a form discretized in
(varying angle in degrees of 0. to 180.) - [Figure 4-a],
[Figure 4-b] and [Figure 4-c].
Thus, it is possible starting from the equation [éq 4-1] to apply these profiles to a field defined in
curvilinear X-coordinate.
()
v S
v
I
I
I
I
moy
=
+
.
éq 4-1
with
I
K
K
K
K
I
I
nor
nf
nor
I
K K
K
K
K
K
v
v
S
S
S
S
v
v
=
-
-
=
-
-
=
-
-
+
+
+
+
+
1
1
1
1
1
180
S S
S
I
nor
nf
,
,
are respectively the curvilinear X-coordinate of the point running, of
NOEUD_INIT
and of
NOEUD_FIN
who define the area of application.
K: index in the table of the discretized function.
(
)
moy
I
I
I
I
NR
v
NR
=
+
=
.
1
NR: a number of points of discretization of the area of application.
Code_Aster
®
Version
7.4
Titrate:
Operator
DEFI_FONC_FLUI
Date:
31/01/05
Author (S):
A. ADOBES
Key
:
U4.35.01-E
Page
:
6/8
Instruction manual
U4.3- booklet: Function HT-66/05/004/A
Leonard profile without BAV
0
0,2
0,4
0,6
0,8
1
1,2
1,4
1,6
1,8
0
30
48,
5
75
90
105
131,
5
150
180
Angle (°)
Profi
L
from VI
tess
Appear 4-a: Profile speed - NB_BAV = 0
Leonard profile 2 BAV
0
0,1
0,2
0,3
0,4
0,5
0,6
0,7
0,8
0,9
1
0
29
33,
51
47,
4
70,
99
75,
4
90
104,
6
109,
01
132,
6
146,
49
151
180
Angle (°)
Profi
L
from VI
tess
Appear 4-b: Profile speed - NB_BAV = 2
Code_Aster
®
Version
7.4
Titrate:
Operator
DEFI_FONC_FLUI
Date:
31/01/05
Author (S):
A. ADOBES
Key
:
U4.35.01-E
Page
:
7/8
Instruction manual
U4.3- booklet: Function HT-66/05/004/A
Leonard profile 3 BAV
0
0,2
0,4
0,6
0,8
1
1,2
1,4
0
25,
7
30,
7
48
51,
44
75,
2
77,
15
90
102,
85
104,
8
128,
56
132
149,
3
154,
3
180
Angle (°)
Profile Speed
Appear 4-c: Profile speed - NB_BAV = 3
Code_Aster
®
Version
7.4
Titrate:
Operator
DEFI_FONC_FLUI
Date:
31/01/05
Author (S):
A. ADOBES
Key
:
U4.35.01-E
Page
:
8/8
Instruction manual
U4.3- booklet: Function HT-66/05/004/A
5 Bibliography
[1]
NR. GAY: Flustru Version 2.0 - general Presentation. Note of use - source FORTRAN of
software. Note technical EDF/DER HT-32/93.05A.