vamseeachanta 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)