2. Data Structure Tree#
sd_spectrum (K19)
♦ '. VAIN ': OJB S V I
◊ '. VARE ': OJB S V R
♦ '. VATE ': OJB SV K16
◊ '. NNOE ': OJB SV K8
2.1. Purpose. VAIN#
'. VAIN ': S V I LONG =1 or 3
The length of the object is 1 if the spectrum is of type SPEC_LONG_COR_xou SPEC_CORR_CONV_xet is equal to 3 if the spectrum is of type SPEC_EXCI_POINT or SPEC_FONC_FORME
V (1) |
spectrum identifier = 1 if the spectrum is SPEC_LONG_COR_1ou SPEC_CORR_CONV_1 = 2 if the spectrum is SPEC_LONG_COR_2ou SPEC_CORR_CONV_2 = 3if the spectrum is SPEC_LONG_COR_3ou SPEC_CORR_CONV_3 = 4 if the spectrum is SPEC_LONG_COR_4 = 11if the spectrum is SPEC_FONC_FORME = 21if the spectrum is SPEC_EXCI_POINT |
V (2) |
0 if an interspectrum is provided and 1 if not. |
V (3) |
number of nodes where point excitations (nbno) are applied |
2.2. Purpose. VARE#
'. VARE ': S V R LONG =12, 1 or nbno
The length of the object is equal to 12 except in the case where the spectrum is of type SPEC_EXCI_POINT in which case its length is 1 if an interspectrum is not provided and nbno in the case where an interspectrum is provided. The content of this vector depends on the type of spectrum.
If the spectrum is of type **** SPEC_LONG_COR_1 ** |
|
V (1) |
correlation length |
V (2) |
kinematic viscosity of the fluid |
If the spectrum is of type **** SPEC_LONG_COR_2 ** |
|
V (1) |
correlation length |
V (2) |
reduced cutoff frequency |
V (3) |
spectra coefficients φ0 |
V (4) |
spectrum coefficients beta |
If the spectrum is of type **** SPEC_LONG_COR_3 ** |
|
V (1) |
correlation length |
V (2) |
reduced cutoff frequency |
V (3) |
spectra coefficients φ01 |
V (4) |
β1 spectrum coefficients |
V (5) |
spectra coefficients φ02 |
V (6) |
β2 spectrum coefficients |
If the spectrum is of type **** SPEC_LONG_COR_4 ** |
|
V (1) |
correlation length |
V (2) |
vacuum rate (two-phase flow) |
V (3) |
spectrum coefficients beta |
V (4) |
gamma coefficients of the spectrum |
If the spectrum is of type **** SPEC_CORR_CONV_1 ** |
|
V (1) |
first correlation length |
V (2) |
second correlation length |
V (3) |
speed of the fluid along the structure under study |
V (4) |
density of the fluid |
V (5) |
spectrum cutoff frequency |
V (6) |
constant giving the amplitude of the pressure spectrum |
V (7) |
hydraulic diameter |
V (8) |
coefficient of the convective speed of vortices in the axial direction (i.e. that of the flow) |
V (9) |
coefficient of convective velocity of vortices in the orthoradial direction |
If the spectrum is of type **** SPEC_CORR_CONV_2 ** |
|
V (1) |
fluid speed |
V (2) |
spectrum cutoff frequency |
V (3) |
coefficient of the convective speed of vortices in the axial direction (i.e. that of the flow) |
V (4) |
coefficient of convective velocity of vortices in the orthoradial direction |
Note:
inconsistency with the U doc which does not allow the user to set this speed. However, it is legal in the code.
If the spectrum is of type SPEC_CORR_CONV_3, the object does not existe |
If the spectrum is of type SPEC_FONC_FORME **** , the object does not existe |
If the spectrum is of type **** SPEC_EXCI_POINT ** |
|
V (1) |
density of the fluid if an interspectrum step is not defined |
V (1 to bnno) |
list of angles defining the directions of the force vectors and moments at each of the nodes in the case where an interspectrum is provided. |
2.3. Purpose. VATE#
'. VATE ': S V K16 LONG =13 or 5 or 4+nbno or 4+nbfonc
The length of the object is equal to 13 except in the following two cases: the spectrum is of type SPEC_EXCI_POINT in which case its length is 5 if an interspectrum is not provided and 4+nbno in the case where an interspectrum is provided.
the spectrum is of type SPEC_FONC_FORME, in which case its length is 5 if an interspectrum is not provided and 4+NBF in the case where an interspectrum is provided.
The content of this vector depends on the type of spectrum.
If the spectrum is of type **** SPEC_LONG_COR_1 ** |
|
V (1) |
“SPEC_LONG_COR_1” |
V (2) |
“LONG_COR” |
V (3) |
Name of the concept function of the fluid speed profile |
V (4) |
“VISC_CINE” |
If the spectrum is of type **** SPEC_LONG_COR_2 ** |
|
V (1) |
“SPEC_LONG_COR_2” |
V (2) |
“LONG_COR” |
V (3) |
Name of the concept function of the fluid speed profile |
V (4) |
“FREQ_COUP” |
V (5) |
“PHI0” |
V (6) |
“BETA” |
If the spectrum is of type **** SPEC_LONG_COR_3 ** |
|
V (1) |
“SPEC_LONG_COR_3” |
V (2) |
“LONG_COR” |
V (3) |
Name of the concept function of the fluid speed profile |
V (4) |
“FREQ_COUP” |
V (5) |
“PHI0_1” |
V (6) |
“BETA_1” |
V (7) |
“PHI0_2” |
V (8) |
“BETA_2” |
If the spectrum is of type **** SPEC_LONG_COR_4 ** |
|
V (1) |
“SPEC_LONG_COR_4” |
V (2) |
“LONG_COR” |
V (3) |
Name of the concept function of the fluid speed profile |
V (4) |
“TAUX_VIDE” |
V (5) |
“BETA |
V (6) |
“GAMMA |
If the spectrum is of type **** SPEC_CORR_CONV_1 ** |
|
V (1) |
“SPEC_CORR_CONV_1” |
V (2) |
“LONG_COR_1” |
V (3) |
“LONG_COR_2” |
V (4) |
“VITE_FLUI” |
V (5) |
“RHO_FLUI” |
V (6) |
“FREQ_COUP” |
V (7) |
“K” |
V (8) |
“D_ FLUI “ |
V (9) |
“COEF_VITE_FLUI_A” |
V (10) |
“COEF_VITE_FLUI_O” |
V (11) |
correlation method name (GENERALE, CORCOSou AU_YANG) |
If the spectrum is of type **** SPEC_CORR_CONV_2 ** |
|
V (1) |
“SPEC_CORR_CONV_2” |
V (2) |
Name of the type concept function defining the pressure spectrum as a function of frequency |
V (3) |
“VITE_FLUI” |
V (4) |
“FREQ_COUP” |
V (5) |
correlation method name (GENERALE, CORCOSou AU_YANG) |
V (6) |
“COEF_VITE_FLUI_A” |
V (7) |
“COEF_VITE_FLUI_O” |
If the spectrum is of type **** SPEC_CORR_CONV_3 ** |
|
V (1) |
“SPEC_CORR_CONV_3” |
V (2) |
Name of the concept type table_function containing the analytical functions that define the turbulent excitation spectrum |
If the spectrum is of type **** SPEC_FONC_FORME ** |
|
V (1) |
“SPEC_FONC_FORME” |
V (2) |
Name of the Caraelem type concept |
V (3) |
Model type concept name |
V (4) |
“GRAPPE_1” or name of the interspectrum if one is provided |
V (5) |
siV (4) =” GRAPPE_1 “⇒ V (5) =” DEBIT_180 “=” “or” DEBIT_300 “if V (4) ==” GRAPPE_1” ⇒ V (5 to 4+nbfonc): list of table_function concepts defining the family of form functions associated with the interspectrum. Each table_function concept consists of two functions that correspond to the components of the shape function in the two directions orthogonal to that of the neutral fiber of the structure. |
If the spectrum is of type **** SPEC_EXCI_POINT ** |
|
V (1) |
“SPEC_EXCI_POINT” |
V (2) |
Name of the Caraelem type concept |
V (3) |
Model type concept name |
V (4) |
“GRAPPE_2” or name of the interspectrum if one is provided. |
V (5) |
If V (4) is equal to “GRAPPE_2 “⇒ V (5) = flow type (” ASC_CEN “,” “,” ASC_EXC “,” DES_CEN “or” DES_EXC “) If V (4) 497” GRAPPE_2 “⇒ V (5 to 4+nbno): nature of the point excitation (” FORCE “or” MOMENT “) |
2.4. Purpose. NNOE#
'. NNOE ': S V K8 LONG =nbno
This object only exists for spectra of type SPEC_EXCI_POINT or SPEC_FONC_FORME.
V (1 to nbno) |
list of names of the excitation application nodes |