New & Noteworthy
2. OchiHubble wave spectrum

The OchiHubble spectrum is included in SIMO.

The wave spectrum can now be used for coupled models.
3. ESDU wind spectrum
The ESDU parametric wind spectrum as specified in API 2RP MET has been added.
4. Wavecurrent interaction and wave drift damping based on Aranhas formulation

Slowly varying wave excitation forces can now take wavecurrent interaction into account based on Aranhas formulation.

Wave drift force coefficients can be modified based on Aranhas formulation.

Alternatively, a full differencefrequency QTF can be modified based on an extended Aranhas formulation.


Wave drift damping coefficients can also be computed based on Aranhas formulation.

Prior to execution of a SIMO condition (or RIFLEX condition with a SIMA body), wave drift force coefficients / wave drift damping coefficients / differencefrequency QTF will be modified based on the present current velocity and direction.

In addition, the user can visualize the effect of wavecurrent interaction effects on the wave drift force coefficients / wave drift damping coefficients in a wavecurrent correction preview, as shown below.
5. Dynamic calculation input

Input data linked to support vessel and body

Previously only one wind turbine could have an external control system, any additional turbines had

6. Decompose the total line force into global system

Line forces is available in global system

Requires storage of the transformation matrices
7. User defined elements

User defined elements may now be included in a model

Stiffness, damping and loads may be included.


Routines with methods for initialization, load step and finish are linked into a DLL by the user. On Linux, the code for the elements is compiled to a .so file.

Currently, only single node elements are available.

The element is primarily intended for modelling seafloor contact but may be used for other purposes

8. Structural data available as results

Structural data are available as results for each end of the elements

Global coordinates

Arc length, external and hydrodynamic diameter

Drag coefficients

Current velocity in global directions

9. New cross section for coupling between axial strain and torsional strain

A separate crosssection has been added for axialtorsion coupling effects.

The axisymmetric crosssection requires hyperelastic axial tension/elongation and torsion moment/rotation relations in addition to hysteresis effects in the bending/curvature relation.
10. Wave kinematics keyfile

The wave kinematics results are shown are shown for each node (line → segment → node )

The
key_<>_wavkin.txt
file now contains all information needed to generate new kinematics for use inRIFLEX
'
' R I F L E X  KEY FILE
' 
'
'
' This keyfile describes the contents of the BINARY file
' sima_wavkin.bin.
' The file contains time series of pregenerated wave kinematics
' stored as single precision (32bit = 4 bytes) real numbers.
'
' The pregenerated wave kinematics for the selected FEM nodes are
' stored in columns on the file:
'
' Col. Supernode OR Global  Static global coordinates 
' nr. Type Line Segment Node FEM node X Y Z Unit Description
' 
0 TYPE IDEN SEGMENT NODE FEMNODE XGSTATIC YGSTATIC ZGSTATIC UNIT DESCRIPTION
1          FORTRAN specific data (please ignore)
2         s Time
3 SNOD anchor   1 535.360 0.000 300.000 m Wave elevation
4 SNOD anchor   1 535.360 0.000 300.000 m/s Fluid velocity, global Xdirection
5 SNOD anchor   1 535.360 0.000 300.000 m/s Fluid velocity, global Ydirection
6 SNOD anchor   1 535.360 0.000 300.000 m/s Fluid velocity, global Zdirection
7 SNOD anchor   1 535.360 0.000 300.000 m/s^2 Fluid acceleration, global Xdirection
8 SNOD anchor   1 535.360 0.000 300.000 m/s^2 Fluid acceleration, global Ydirection
9 SNOD anchor   1 535.360 0.000 300.000 m/s^2 Fluid acceleration, global Zdirection
10 SNOD anchor   1 535.360 0.000 300.000 kN/m^2 Fluid dynamic pressure
11. Improved search functionality

Added search tips

Limit the search to a part of the documentation:
12. Hydrodynamic data can be visualized

Hydrodynamic data is now visible

Open the 3D view of the model

Select the hydrodynamic data

13. Display of nodal components

Size of nodal body is set by using the mass or the volume
14. Distance vector

Distance Line to Line operation in post processor is augmented with optional output of distance vector
16. Mass and inertia summary

Calculate total mass, centre of mass and inertia tensor during static analysis, for:

Selected lines

In initial, or final (static) deformed configuration

In specified output reference system

17. Bibliography
See Bibliography

A separate section with bibliography is added to the user documentation

Applications and benchmarking of the developed software tools

References with keywords

18. Metocean task
See Met ocean and How to make scatter data

Added documentation on how to create scatter diagram

Set up the type of scatter data

Specify the scatter data calculation

Make a and run the condition

19. SIMA will now store the table setup when customizing them (SIMA9918)

The table setup will be shared among all editors of the same type.

Table setup can be rest to default
20. Improved inspection for failed workflows

When workflows fail during run it is now possible to go directly to the failed workflow, even if it is many layers down
21. SIMO
Description  JIRA reference 

Anchor position in global coordinates for Catenary Lines are now available as results from a static calculation. 
SRV2054 
It is now possible to calculate wave drift damping from a full difference frequency QTF or Wave Drift Force coefficients using Aranha’s formula. 
SIMA10001 
It is now possible to correct wave drift coefficients (lowfrequency excitation force) to account for wavecurrent interaction using Aranha’s formula. Similarly, a full differencefrequency QTF can be corrected by using an extended Aranha’s formula. 

Option to plot sumfrequency QTFs as curves with constant sumfrequency has been added 
SIMA10134 
The ESDU parametric wind spectrum as specified in API 2RP MET has been added. 
SRV2010 
OchiHubble wave spectrum is included in SIMO. OchiHubble wave spectrum can now be used for coupled models. 
SRV1364 
22. Riflex
Description 
JIRA reference 
Cross sections for partially submerged elements are replaced by load models for partially submerged elements: "Morison partly submerged cross section" 
SIMA10019 
A separate crosssection has been added for axialtorsion coupling effects. 
SRV1988 
Eigenvalue solver has been replaced by a more numerically robust code. User input to the eigenvalue analysis has been simplified. 
SRV1331 
Dynamic SIMO/RIFLEX simulations can now be rerun without rerunning static analysis. 
SIMA10080 
The key_<>_wavkin.txt file now contains all information needed to generate new kinematics for use in RIFLEX. 
SRV2041 
Structural data can now be exported to an Ascii file for all lines, segments, elements and elements ends. 
SRV2026 
User defined elements (stiffness, damping and loads) may now be included in a model. 
SRV1961 
Export of tension and curvature time series from VIVANA fatigue calculations. This can be used to calculate the stresses for umbilical & flexibles. 
SIMA9114 
Document the LAYFLEX option and the print of roller contact forces to file. 
SRV1991 
Improved visualization of Nodal body in 3D view 
SIMA9840 
Geometric stiffness matrix has been changed for elements where the bending moment/curvature relationship includes hysteresis effects. This improves the numerical stability and gives a significant improvement in convergence during static analysis. 
SRV2053 
Added possibility to decompose the total line force into global system. 
SIMA10169 
Fixed display of nodal components in 3D to ensure they are visualized even without mass or volume. 
SIMA10119 
It is now possible to calculate the total mass, centre of mass, and inertia tensor of selected lines. 
SRV2033 
23. SIMA
Description  JIRA reference 

Hydrodynamic data is now visible in the 3D view if a plot is open at the same time. 
SIMA10086 
Improved inspection for failed workflows. It is now possible to inspect the failing workflow directly, even if it is many levels down in the workflow hierarchy. 
SIMA10107 
New wizard to help create and test batch commands to run with SIMA Runtime Engine 
SIMA10142 
Presentation unit is now added to numerical inputs in workflow 
SIMA7694 
SIMA will now store the table setup when customizing them. The table setup will be shared among all editors of the same type. 
SIMA9918 
Filter in 3D view has been changed from "type filtering" to "specific object filtering". The user can select individual geometries and hide/unhide these. 
SIMA10082 
Metocean data can now be created using SIMApy. 
SIMA10098 
Distance Line to Line operation in post processor is augmented with optional output of distance vector. 
SIMA10148 
Improved 3D visualization when using small storage steps or start time different from 0.0 
SRV2015 
The Marmo package in SIMApy has been renamed and moved to the simapy.sima.signals package. The sima root package has also been moved into the simapy package. 
SIMA10143 
A separate section with bibliography is added to the user documentation. 
SIMA10097 
Added documentation on how to create scatter diagram in Metocean task. 
SIMA7899 
Added functionality to only search within current active module in documentation. 
SIMA10096 
Improved documentation of the SYROPE fiber rope models 