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BV HYDROSTAR TRAINING Mesh Generation Deepwater Technology Research Centre Binbin Li
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BV HYDROSTAR TRAINING Mesh Generation
Deepwater Technology Research Centre
Binbin Li
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REFERENCE SYSTEM
AP FP
z
x
x
o
yPortside
Starboard
ZFSURFACE(Default=0)
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REFERENCE SYSTEM
►Wave heading definition180° head sea
0° following sea
90°/270° beam sea
Relative Wave Heading!!!
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REFERENCE SYSTEM
►Geometrical Symmetry
0 symmetry 1 symmetry
2 symmetry
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REFERENCE SYSTEM
► Flat panel of the mesh representing the wetted part of hull
n1
n2
n3
n4
n
n1
n2
n3
Quadrilateral panel Triangular panel
*** The normal vector is oriented towards fluid.
n
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TOOL: Automatic Mesh Generator (AMG)
HSTAR MODULE: HSMSH
INPUT FILES: mesh.hul & mesh.mri
sections
Fore Part
Aft Part
MESH
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HSTAR MODULE: HSMSH
Creation of HydroSTAR Mesh: mesh.hst
MESH
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WINDOWS VERSION
MESH
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► HUL:
Number of sections
Number of points & y, z coordinates for each section
► MRI:
HUL file name
Not enough section in fore part
Draught problem
Trim/Heel problem
2 points adjustment
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Typical input
HUL FileMRI File
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Typical output
HST File
Nodes
Panels
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DRAUGHT:14m TRIM:0
MESH-Single body
DRAUGHT:5m TRIM:0
DRAUGHT:5m TRIM:-1degree
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Possibilities
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MESH-Multi-hull
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Vessel1.tnk
MESH-Multi-body
Vessel2.tnk
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Swath
Swath
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Barge
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Wigley
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Offshore
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Examples
Examples 1Tanker shape FPSO
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Example 1 – AMG for FPSO
► .hull file
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Example 1 – AMG for FPSO
► .mri file
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Example 1 – AMG for FPSO
► .hst file
hsmsh –ship vlcc
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Example 1 – AMG for FPSO
hslec vlcc.hst
Hschk
hview or hvisu
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Examples
Examples 2SEMI-SUBMERSIBLE
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Example 2 – SMG for SEMI
Data file .don (part 1)
1
2
4
3
5
6
8
7
910
12
11
1314
16
15
17
20
18
19
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Example 2 – SMG for SEMI
Data file .don (part 2)
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Example 2 – SMG for SEMI
.hst file
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Examples
Examples 3TRUSS SPAR
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Example 3 – Hybrid model for SPAR
.don file
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Example 3 – Hybrid model for SPAR
Original .hst file
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Example 3 – Hybrid model for SPAR
Modified .hst file Extra points for truss structure!
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Example 3 – Hybrid model for SPAR
Modified .hst file
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Examples
Examples 4Mesh cut
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Examples
