3. Modeling A#

3.1. Characteristics of modeling#

For the 3D system on which the added coefficients are calculated:

Cylinder:	2400 meshes QUAD4 shell elements MEDKQU4
	12 stitches SEG2 spring elements MECA_DIS_T_L

Fluid:	3600 meshes QUAD4
	thermal elements THER_FACE4
	on cylindrical surfaces

	7200 meshes HEXA8
	thermal elements THER_HEXA8
	in the fluid annular volume

	Analytical frequencies in air ( \(\mathrm{Hz}\) )

First mode in air	0.497
Second mode in air	5.263

	Theoretical added mass ( \(\mathrm{kg}\) )) **

\({M}^{11}\)	1.753 106
\({M}^{22}\)	2.675 106

	Analytical frequencies of water modes ( \(\mathrm{Hz}\) )

First water mode	0.365
Second water mode	4.004