orcaflex-results-comparison

name	orcaflex-results-comparison
description	Compare results across multiple OrcaFlex simulations for design verification, sensitivity studies, and configuration comparison. Includes pretension, stiffness, and force distribution analysis.
type	reference
version	1.0.0
updated	"2026-01-17T00:00:00.000Z"
category	engineering
triggers	["compare simulations","results comparison","sensitivity study","design comparison","configuration comparison","pretension comparison","stiffness comparison","mooring comparison"]
capabilities	[]
requires	[]
tags	[]
scripts_exempt	true

Orcaflex Results Comparison

When to Use

• Comparing design alternatives
• Sensitivity analysis (depth, heading, sea state)
• Baseline vs modified configuration
• Design verification against target values
• Multi-configuration optimization
• Mooring system comparison
• Installation sequence comparison

Prerequisites

• Multiple OrcaFlex simulation results (.sim files or extracted CSV)
• Python environment with digitalmodel package installed
• Consistent variable naming across simulations

Python API

Basic Comparison

from digitalmodel.orcaflex.analysis.comparative import MooringComparativeAnalysis
from pathlib import Path

# Initialize analyzer
analyzer = MooringComparativeAnalysis(
    results_directory=Path("results/")
)

# Compare pretensions

*See sub-skills for full details.*
### Stiffness Comparison

```python
from digitalmodel.orcaflex.analysis.comparative import MooringComparativeAnalysis

analyzer = MooringComparativeAnalysis(results_directory=Path("results/"))

# Compare stiffness matrices
stiffness_comparison = analyzer.compare_stiffness(
    configurations=["6_leg", "8_leg", "taut_leg"]
)


*See sub-skills for full details.*
### Line Force Distribution

```python
from digitalmodel.orcaflex.analysis.comparative import MooringComparativeAnalysis

analyzer = MooringComparativeAnalysis(results_directory=Path("results/"))

# Compare force distribution by line groups
force_comparison = analyzer.compare_line_stiffness_distribution(
    configurations=["baseline", "optimized"],
    line_groups={
        "bow": ["Leg_1", ],

*See sub-skills  full details.*


```python
 OrcFxAPI
 pathlib  Path
 pandas  pd
 numpy  np

 () -> pd.DataFrame:

*See sub-skills  full details.*


```python
 () -> :
    

*See sub-skills  full details.*



- [orcaflex-post-processing](../orcaflex-post-processing/SKILL.md) - Extract results
- [orcaflex-extreme-analysis](../orcaflex-extreme-analysis/SKILL.md) - Extreme values
- [orcaflex-operability](../orcaflex-operability/SKILL.md) - Multi-sea-state analysis
- [mooring-design](../mooring-design/SKILL.md) - Mooring system design



- API RP 2SK: Design  Analysis of Stationkeeping Systems
- DNV-OS-E301: Position Mooring
- Source: `src/digitalmodel/modules/orcaflex/analysis/comparative.py`



- [Basic Comparison (+)](basic-comparison/SKILL.md)
- [Simulation Setup (+)](simulation-setup/SKILL.md)



- [Error Handling](error-handling/SKILL.md)



- [Version Metadata](version-metadata/SKILL.md)
- [[] - -01-](--01-/SKILL.md)
- [ Pretension Comparison (+)](-pretension-comparison/SKILL.md)
- [Comparison Bar Chart (+)](comparison-bar-chart/SKILL.md)
- [Comparison Summary Table (+)](comparison-summary-table/SKILL.md)