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What was new in Version 5.7

Version 5.7.2

Bug fixes:

  • Correction on multiple waves mean loads in solver
  • Material properties for rigid bodies were not read in the TDL file (1425)
  • Error on log generation containing stiffened HAWT blades (1427)
  • Import/export of variation tables were not working (1428)
  • Crash could occur when "Saving as ..." a DSK having an EnvSet (1430)
  • HAWT tower properties were not all translated in the log file (1431)
  • Update on segments and sections management on user defined HAWT towers (1432)
  • Sea&Ground connections with rigid bodies were not correctly translated in the log file (1434)
  • Regression on ballast display in dss animation (1436)
  • Full QTF option on floater motion dialog box was hidden (1437)
  • Crash on some rao post treatment visualization (1439)
  • For fatigue analyses, bending SCF coefficients used for computation were not values defined by the user in the dialog box
  • The "Imported mesh" and "Mesh" checked boxes on the "Edit floater" dialog box are now working properly

Structural Code Checks :

  • New option for code checks on tubes : hydrostatic pressure can be set from pressure in database.
  • Modifications for code checks on pontoons:
    • Code check DNV-ST-0119-2018: Correcting ratios 7.1.6.5 plate and flange sides of the stiffener, 7.1.7.10 flange side of the girder. Adding ratio 7.1.7.10 plate side of the girder.
    • Code check DNV-RP-C201 : The formula 8.31 is no longer considered as a ratio, but as a criterion.
    • Both previous code checks:
  • adding option "Pressure combination" for the computation of the design pressure,
  • new formulation of the "sea pressure".

Version 5.7.1

New features :

  • First-order diffraction/radiation (HDB file) : it is now possible, for any generic floater, to create a Hydrodynamic DataBase directly with DeepLines. This database is automatically created with the a potential flow solution based on PRINCIPIA's Diodore software. See Hydrodynamic Database Files Viewer / Creation for details.

  • Turbines: we kept on improving the setting of wind turbines analyses inspired by users' feedback

    • Turbine yaw as a parameter in the environment set

    • Turbine parameters in the default analysis set

    • Pitch fault cases defintion

    • Edit aero/control options

    • Read .bts wind files

  • User Defined Keywords: as you may know, it is sometimes useful to introduce keywords directly in the solver LOG input file but some of these keywords may refer to structural objects or nodes by their IDs which are not defined before generating the LOG file. This new feature allows defining ID-IDENTIFIERS such as " $idobj " for an object, " $idloc " for a node, " $idpos " for an position and " $idvar " for a variation table and then create User Defined Keywords (UDK) loadings using them. See section User Defined Keywords for details and also the dedicated examples provided in the setup.

  • Post-processing improvements:

    • SQLite database : a new file format export is available in batch mode using -batch_sql command. It uses existing batch text files format as input but with new extra keywords but a database file ".db" is generated for all variables of each analysis. This .db file can be added as a data input for Excel with appropriate ODBC driver or accessed by any tool or programming language that can deal with SQLite (such as Python, Fortran, C++ etc.). A new -batch_txt command enables to export only text files, whereas the usual -batch command is exporting results as text files and curves in dss files (as before). A dedicated example is provided with the setup.

    • Definition of post-treatment from Excel sheet : Predefined results may now be simply defined with a copy/paste from Excel. see Batch File Creation.

    • Modifications to post-treatment : the post-processing has been improved for massive parallel runs ( HPC ) on the same machine (check of license, error messages...).

  • Dyneema rope : A specific type of properties for dyneema ropes has been implemented into DeepLines Wind. Input data provided by DSM are introduced as an external encrypted file. This file contains information which allows an automatic update of the dyneema rope dynamic stiffness and structural damping during a time domain simulation accounting for the temperature, the loading frequency and the average axial strain experienced by the rope.

For more details please refer to the document " _ Dyneema_ropes_DeepLinesWind guidance note_ " provided in ./Doc folder.

  • Update Python version from 3.3 to 3.8. To simplify the use of Python scripts, a python version in the exact required version is included in the setup and triggered when any Python need is required, users do not have to check the Python installation before using DeepLines.
  • Version 64 bits is available and now the default one. It enables to create larger models. Moving from 32 to 64 bits implies to setup a new 64 bits license server accordingly. Future version will be 64 bits only as 32 bits is deprecated for Windows system. The current version is still available in both versions.

  • Miscellaneous :

    • Turret-moored floaters: a new option is available to make easier the definition of a turret-moored system (see Turret-Moored floaters).

    • Friction activation from quasi static steps.

    • Low frequency loads on multi-structures floaters.

    • Complex meshes defined in an external file may not be translated into the LOG file to save memory space.

Bug fixes:

  • Management of non occidental characters (1391)
  • When a floater motions property was defined with the option "Used implicit coupling" to compute the low frequency motions, this option could not be unchecked. (1384).
  • On the .cmd file automatically generated for fatigue computation with python scripts, some paths could be wrong and python script could not be run (1382).
  • Problem of predefined results with specific diagnostics for HAWT Nacelle. (1381).
  • When a result about contact at TDP was requested, the dynamic database *.dtb was not correctly closed when closing the GUI (1376)
  • "Load Histogram" function was not working for fatigue analysis (1377)
  • Bi-directional bending stiffness' of a riser inside a stiffener object were not saved in .dsk file (1408)
  • There was a .log translation error of Control dll options when specific data are exchanged with the controller (1407)
  • There was a .log translation error from rigid body object associated with a mesh, property ID field was not properly defined (1401)
  • The copy/paste in an envset grid has been optimized to speed up the process (1399)
  • Export spectral curve in batch mode was sometimes incomplete (1397)
  • When the python environment variable was not set in PATH, python was not detected properly (1353)
  • It was not possible to select several floater motions in an envset when the floater has a substructure (multi-structure property) (1255)
  • It was not possible to take into account low frequency waves load on a floater represented by substructures (1392)
  • Crash could occur when opening a dss file containing only TDP post treatments (1395)
  • Crash could occur when double clicking on a line "Pipe with bends" to open it (1390)
  • It was not possible de save combination matrix containing turbine properties (1369)
  • Rigidification of only one blade wrt its hub connection point is now possible (1370)
  • Update of "HubCM" in the turbine panel could impact the positions of blade nodes in the genearted log file (1366)
  • It was not possible to define an additional mass when the HAWT Tower was defined with a single Conical section (1346)
  • Offsets Combobox in combination matrix of Environment set may not be filled (1365)
  • When using the Function "replaceLineHydroOptionFile" in a python script, the group of elements associated with polar coefficients was not given the proper ID (1362)
  • Spectral results in batch mode were not exported in a directory that follows the same convention as other output (1416)

Small updates:

  • Yaw and Yaw variation table have been added on HAWT (1386)
  • Visualization of the local frames of Sea & ground Fairleads (1389)
  • Connection of a Rigid Body to a Sea & Ground fairlead (1388)

Structural Code Checks :

  • For all code checks:
    • some memory leaks have been removed,
    • signs of bending efforts have been corrected which has consequences for the results of the code checks on joints.
  • Code checks on joints: correction of the beta angle computation when a member has eccentricities.
  • DNV-RP-C202-2010-Cone: The computation of minimal or maximal radius at start or end arclengths for tapered segments was corrected.