background image
Code_Aster
®
Version
7.4
Titrate:
Operator
FONC_FLUI_STRU
Date:
27/01/05
Author (S):
A. ADOBES
Key
:
U4.35.02-E
Page
:
1/4
Instruction manual
U4.3- booklet: Function HT-66/05/004/A
Organization (S):
EDF-R & D/MFTT















Instruction manual
U4.3- booklet: Function
Document: U4.35.02



Operator
FONC_FLUI_STRU

1 Goal
To create a constant function parameterized by the curvilinear X-coordinate. This function gives the value of
coefficient of mass added for a configuration of the type “beam of tubes under flow
transverse ".
This function is used downstream by the operator
DEFI_MATERIAU
[U4.43.01], key word factor
ELAS_FLUI
. Product a concept of the type
function
.
background image
Code_Aster
®
Version
7.4
Titrate:
Operator
FONC_FLUI_STRU
Date:
27/01/05
Author (S):
A. ADOBES
Key
:
U4.35.02-E
Page
:
2/4
Instruction manual
U4.3- booklet: Function HT-66/05/004/A
2 Syntax
fonc_cm
[function] = FONC_FLUI_STRU
(
TYPE_FLUI_STRU = typeflui
,
[type_flui_stru]
);
background image
Code_Aster
®
Version
7.4
Titrate:
Operator
FONC_FLUI_STRU
Date:
27/01/05
Author (S):
A. ADOBES
Key
:
U4.35.02-E
Page
:
3/4
Instruction manual
U4.3- booklet: Function HT-66/05/004/A
3 Operands
3.1 Key word
TYPE_FLUI_STRU
TYPE_FLUI_STRU = typeflui
Concept of the type
[type_flui_stru]
product by the operator
DEFI_FLUI_STRU
[U4.25.01],
providing the value of the coefficient of added mass C
m
.

Note:
The value of C
m
can be imposed via the key word
COEF_MASS_AJOU
appearing in the control
DEFI_FLUI_STRU
. If the coupling fluidelastic is taken in
count, the coefficient of added mass can be calculated by the operator according to
other characteristics of the beam.

The operator
FONC_FLUI_STRU
create a concept of the type
[function]
who is then
directly usable by
DEFI_MATERIAU
[U4.43.01], key word
ELAS_FLUI
.

The function constant, is parameterized by the curvilinear X-coordinate, and gives the value of C
m
.

The combined use of the operators
FONC_FLUI_STRU
then
DEFI_MATERIAU
option
ELAS_FLUI
is necessary when one studies a configuration of the type “beam of tubes
under transverse flow ", and it is allowed only for this type of configurations.
background image
Code_Aster
®
Version
7.4
Titrate:
Operator
FONC_FLUI_STRU
Date:
27/01/05
Author (S):
A. ADOBES
Key
:
U4.35.02-E
Page
:
4/4
Instruction manual
U4.3- booklet: Function HT-66/05/004/A



























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