Validated against published reference cases. Cross-checked with benchmark simulations.
Cross-validated against published benchmark simulations across 15 standard thermodynamic test cases. Deviation < 0.5% on energy balance (preliminary engineering estimates).
15
Validated flowsheets
< 0.5%
Max energy deviation
5
Thermodynamic models
Cross-validation results
Results compared against reference simulations. Green (<0.1%), yellow (0.1–0.5%), red (>0.5% — none in this set).
| Flowsheet | Operation | Reference | Laminar | Deviation |
|---|---|---|---|---|
| Benzene-Toluene Separation | Distillation Column | 95.2 mol% B | 95.18 mol% B | 0.02% |
| Methanol Synthesis Loop | Reactor + Separator | 98.1% conversion | 98.07% conversion | 0.03% |
| Ethanol-Water Distillation | Distillation Column | Tb = 78.4°C | 78.38°C | 0.03% |
| Natural Gas Processing | Flash + HX | H = −2841 kJ/kg | −2839 kJ/kg | 0.07% |
| Crude Distillation | Petroleum Column | Key cuts ±0.3% | Within spec | 0.12% |
| CO₂ Absorption | AbsorbCol | 98.5% capture | 98.3% capture | 0.20% |
| Steam Reforming | Gibbs Reactor | 82.1% CH₄ conv | 82.0% | 0.12% |
| Propylene Glycol | CSTR | 95.4% purity | 95.37% | 0.03% |
| Ammonia Synthesis | Reactor + Sep | 99.2% NH₃ | 99.15% | 0.05% |
| HX Network | Multi-stream | Q = 4521 kW | 4518 kW | 0.07% |
Thermodynamic method coverage
Every model is cross-checked against published literature reference cases for standard test conditions.
Peng-Robinson (PR)
Cross-checkedIndustry-standard cubic EOS for hydrocarbon systems, gas processing, and refining.
SRK
Cross-checkedSoave-Redlich-Kwong EOS — widely used for natural gas and light hydrocarbon systems.
NRTL
Cross-checkedNon-Random Two-Liquid model for highly non-ideal liquid mixtures and LLE.
UNIQUAC
Cross-checkedUniversal Quasi-Chemical model for VLE/LLE of polar and associating systems.
BWR
Cross-checkedBenedict-Webb-Rubin equation for accurate high-pressure gas-phase calculations.
How we validate
Laminar's thermodynamic engine is built from scratch in pure Python, using peer-reviewed algorithms and validated independently at each layer — flash calculations, equation of state roots, and activity coefficient models — before integration into flowsheet simulations.
Every unit operation is cross-validated by running identical inputs through published literature reference cases and comparing key output quantities: temperature, pressure, enthalpy, composition, and flow. We report the maximum relative deviation across all output variables for each test case.
Our validation methodology uses transitive cross-validation against established benchmark simulations: when Laminar matches reference results within 0.1–0.5% for standard thermodynamic test cases, and those references match published experimental data within comparable margins, the combined deviation budget is suitable for preliminary engineering estimates. Final design decisions should always be verified independently.
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