- CREATE CIRCULAR SHAPE IN ORCAFLEX FREE FLOODING OF
- CREATE CIRCULAR SHAPE IN ORCAFLEX SOFTWARE FOR ENGINEERING
- CREATE CIRCULAR SHAPE IN ORCAFLEX SERIES OF P
Create Circular Shape In Orcaflex Software For Engineering
More functionality and industry leading productivity Recently weve managed to neglect our newsletter, not only by completely missing one for the 9.4 In This Months Newsletter release, but also in delaying this follow up. These opportunities are created due to significant growth potential.Newsletter Professional software for engineering professionals OrcaFlex 9.4 (Aug 10) & 9.5 (Oct 11). These need to be linearized before exporting.characteristics (Orcaflex), further optimization of the mooring system for an. Expection are the nonlinear fluid nodes (tanks, buoyancy shapes) that DAVE has. As many concepts in DAVE and Orcaflex are identical it is relatively straight forward to export a DAVE model to orcaflex. Orcaflex orcaflex is a well known dynamic analysis package offering myriad options.
Create Circular Shape In Orcaflex Free Flooding Of
You will notice the News in Short 8 temporary demise of the application articles in this edition the editor was too slow talking to Did You Know 8 potential contributors, and there are too many new features to outline here. P-y Curves 2 Modal Analysis 2 OrcaFlex 9.4 major features include: OrcaFlex 9.5 major features include: Improvements to Fatigue Analysis 2 Slug flow and free flooding Automation for Fatigue, Rayleigh Extreme Slamming 3 Statistics & Line Wizard Multi-threaded OrcaFlex Excel spreadsheets Improvements to the OrcaFlex Whole system modal analysis Vessel motions filter, wave drift damping, Spreadsheet 3 manoeuvring & other damping SHEAR7 fatigue, T-N curves, & mean stress Slamming for 6D buoys Better Shape Modelling 6 models Some Improvements to Lines 6 Improved contact model P-y curves Improved Modelling of Vessels 6 Generic text import for vessel hydrodynamic Equivalent pipe type capability data External functions: now with implicit & in Python Main Articles Full MATLAB & Python interfaces Automation & Productivity 4&5 As always, a full list of the new features in 9.4 and 9.5 can be found in the Whats New section of the Agents News 7 OrcaFlex help menu and also on our website at: Our major article in this newsletter gives an overview of the wealth of automation facilities with The Rest OrcaFlex, giving a very important edge to OrcaFlex relative to its peer group. We hope that this belated issue provides a useful insight into those new capabilities. In an effort to make amends, we offer Slugging and Free Flooding of Lines 1 this bumper edition to cover both the release of both 9.4 and 9.5.
This has been available in OrcaFlex for a long time, so on to the new options. The Uniform option gives constant contents density along the Line. And to help understand / check the setting of these data, theres a new results variable called Contents Density see screenshot to the right. Slugging and Free Flooding of Lines Previously constant, the contents of a Line can now freely flood or slug(!) Previously there was only one way to model the contents of an OrcaFlex Line, but now there are three (!): Uniform, Free Flooding and Slug Flow. In the Next Newsletter 8 Orcina Out and About 8 We always welcome suggestions for improvements / future content so please do drop us a line.
Perspective of the effect of varying fluid density on the movement of the pipe. Rather, it allows a global and ballasting operations. But lets be clear, the Slug Flow option does b) A very long slug (longer than the length of the line) with a flow rate can be not do local flow modelling of the complex interaction effects between either a used to model progressive flooding great for various controlled flooding fluid and the inner pipe walls or different fluid phases. Slug Flow: Now, this one is a little more involved here simple or complex patterns of different contents densities are allowed within the same line, and these can optionally travel along the line. The 2010 OrcaFlex UGMs nicely showed this by lowering a line into the water and watching the range graph of Contents Density. Here the density and elevation of the fluid inside a Line are taken to be the same as the fluid outside the Line, and there are no additional data to set.
Simple slug patterns are easily represented with a single noise is introduced in the results which is what would have happened if we row of data, but more complex patterns can be created by setting data on more had adopted only step changes in contents state. (constant or function of time) through the line so one packet of slugs cannot d) The elements contents change smoothly (ie., can be partially full), so no overtake another packet. The defined pattern(s) must move at the same rate size of the segments youve defined. Between the slugs there must be but remember the resolution of this load effect will also be affected by the the same contents density. Just a couple of other notes: Each row in the Slug flow table defines a different pattern of slug geometry and c) The user is free to set both the Slug Length and the Distance between Slugs, density simultaneously within the same line.
However, for lines penetrating vertically into the seabed, lateral soil reaction was not easy to setup.well, OK, you could with sets of horizontal non-linear springs attached to each node below the seabed. For lines tangential to the seabed, OrcaFlex has both linear elastic and non-linear hysteretic (with suction & trenching) soil models. Whether its home decor or office space, creating a sweet atmosphere.Enhancements & New Features P-y Curves Lateral soils resistance for vertically penetrating lines.
Create Circular Shape In Orcaflex Series Of P
Orientation can be set by the line End Orientations to allow for just off-vertical This makes soil modelling for vertically penetrating lines considerably easier to well construction. However, in v9.6 (released Oct-12), the neutral supressed all this is described in the help file. The neutral orientation of the line for the P-y curves (ie., the riser vertical orientation which gives no lateral soil reaction) is taken to be vertical from Once a P-y model is attached to a line, then some of the normal load effects are the bottom end of the line. Once the particular P-y model is set up (and the user can set many different ones), it is then associated with a particular Line on the Line dataform. But that was then, and this is now: the new (v9.5) P-y implementation allows the user to specify a series of P-y curves, each with different stiffness characteristics, for different elevations below the seabed.
Typically, system modal analysis is used to compare the system natural frequencies with the frequency content of an incident wave energy spectrum. Although, shown in the drop-down and the 3D view shows the 1st major surge mode (at there have been some small improvements over the years, it was still restricted c140s in this case). The system modes are We first introduced modal analysis in OrcaFlex v7.5 way back in 2001. Now system modes- a lot more speed with a lot less memory! The screenshot shows this capability for a moored vessel. However, v9.4 saw a major improvement by allowing the modes of a complete system to be determined (as well as for single lines). Modal Analysis to modes of a single line.
This is both incredibly fast and has low memory requirements. Recognizing this, v9.4 includes, alongside the earlier solver, a new solver based on the Lanczos iterative algorithm. However, we are normally interested in just the first few eigenvalues (the low frequency modes). The original matrix solver was good when all eigenvalues were required, but it could be expensive both in solution time and memory requirements. As well as the new system capability, the matrix solution routines have been improved. This knowledge can be used to de-tune the system response away from exciting frequencies.
Three models are offered Goodman, Te/Tw Choice for Stress Factor Fatigue: Previous versions of OrcaFlex always Soderberg and Gerber, each acting in a similar way to scale the true stress used the wall tension. As the name suggests, this option is for mooring lines! Mean Stress Model: When using S-N Curves, the effect of the mean stress in the line on fatigue can now be included. (More precisely, OrcaFlex uses the SHEAR7 damage rate and multiplies this by the load case exposure time.) Mooring: This new option uses Tension-N curves rather than the more familiar Stress-N curves. OrcaFlex then just collates, sums and plots the damage from a number of different SHEAR7 load cases in a convenient manner. Here are some of the main changes: SHEAR7 Fatigue: Here fatigue damage is calculated outside of OrcaFlex by SHEAR7. The Fatigue post-processor has had a significant revamp in v9.4.
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