Agent skill
orcaflex-results-comparison
Compare results across multiple OrcaFlex simulations for design verification, sensitivity studies, and configuration comparison. Includes pretension, stiffness, and force distribution analysis.
Install this agent skill to your Project
npx add-skill https://github.com/vamseeachanta/workspace-hub/tree/main/.claude/skills/engineering/marine-offshore/orcaflex/results-comparison
SKILL.md
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
digitalmodelpackage 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", "Leg_2"],
*See sub-skills for full details.*
### Multi-Simulation Response Comparison
```python
import OrcFxAPI
from pathlib import Path
import pandas as pd
import numpy as np
def compare_simulation_responses(
sim_files: list,
config: dict
) -> pd.DataFrame:
*See sub-skills for full details.*
### Sensitivity Analysis
```python
def sensitivity_analysis(
parameter_name: str,
parameter_values: list,
result_variable: str,
results: pd.DataFrame
) -> dict:
"""
Analyze sensitivity of result to parameter.
"""
*See sub-skills for full details.*
## Related Skills
- [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
## References
- API RP 2SK: Design and Analysis of Stationkeeping Systems
- DNV-OS-E301: Position Mooring
- Source: `src/digitalmodel/modules/orcaflex/analysis/comparative.py`
## Sub-Skills
- [Basic Comparison (+1)](basic-comparison/SKILL.md)
- [Simulation Setup (+2)](simulation-setup/SKILL.md)
## Sub-Skills
- [Error Handling](error-handling/SKILL.md)
## Sub-Skills
- [Version Metadata](version-metadata/SKILL.md)
- [[1.0.0] - 2026-01-17](100-2026-01-17/SKILL.md)
- [1. Pretension Comparison (+3)](1-pretension-comparison/SKILL.md)
- [Comparison Bar Chart (+1)](comparison-bar-chart/SKILL.md)
- [Comparison Summary Table (+1)](comparison-summary-table/SKILL.md)
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