Antranova Antranova Engineering AB Systems Engineer · Field and Analysis

Services

The work spans from field inspection and measurement to advanced analysis and physics-based modelling – and back again via verification in operation. It is the chain as a whole that creates value, not individual parts of it.

CDS-100 demonstrator · Contact

Technical investigations and system analysis

Root cause identification of operational disturbances and performance problems. Based on inspection, measurement and reconstruction of real system behaviour.

Dynamic and model-based analysis

Physics-based models, transient analysis and scenario comparisons. Parameter studies, sensitivity analysis and what-if analysis for technical decisions.

Thermohydraulic process analysis

Analysis of cooling systems, heat systems, pumps, valves and pipework. Pressure drop, flow distribution, transient processes, operational cases and disturbances.

Resilience and preparedness analysis

Technical support for assessment of critical infrastructure, consequence analysis at disturbances and system robustness under varying load conditions.

Technical training and communication

Knowledge transfer via simplified models, simulators and documentation adapted to the recipient. Raises internal competence and reduces dependence on external support.

Prototype tools and analysis templates

Jupyter notebooks, calculation templates and visualisation tools that the customer can reuse. Concrete demonstration of the model-based working method.

Model fidelity – the right level for the right question

Not all analysis needs to be complex. The same question can be developed step-by-step from a simple web model to advanced thermohydraulic analysis without losing structure or comparability.

Level
Description
Tools / environment
Complexity
Typical use
Level 1 Demo study
Browser-native models for qualitative understanding, concept exploration, pedagogy and first sensitivity assessments.
HTML / JavaScriptBrowser · no installation
Low
Rapid orientation and early decision discussions.
Level 2 Python analysis
Quantitative studies with a clear calculation chain, parameter sweeps, sensitivity analysis and reproducible results.
Python · NumPy/SciPy · JupyterNotebooks · report export · batch runs
Low–medium
Pre-studies, sizing work and structured decision support.
Level 3 OpenModelica
Equation-based multi-physics modelling with higher model fidelity, control integration and system studies.
OpenModelica · ModelicaAcausal models · multi-physics · system networks
Medium
Integrated process and control studies.
Level 4 Simulator platform
Full-scale real-time environments for instructor support, operator training and credible reproduction of system and HMI behaviour.
JADE · SimExec · 3KeyMaster · OrchidFull-scope OTS · real-time · HIL · instructor support
High
Training, verification of operational scenarios and advanced decision support.
Level 5 Best-estimate thermohydraulics
System codes for safety-critical and regulator-sensitive analyses where nodalisation, V&V and uncertainty evaluation must be rigorously structured.
RELAP5-3D · TRACE · CATHAREBEPU · two-phase flow · LOCA · regulatory basis
Very high
Safety analyses, licensing-adjacent basis material and high-consequence questions.

Interpretation

Most technical questions should begin at level 1 or 2 to quickly establish reasonable assumptions, bound the problem and identify which parts truly justify higher model fidelity. Escalation to level 4 or 5 should be driven by decision consequence, training realism, safety requirements or regulatory weight.

The CDS-100 demonstrator is an example of level 1 in practice. Open the demonstrator →

When does this fit?

  • When a system behaves unexpectedly and the underlying cause is unclear
  • When existing documentation is incomplete or outdated
  • When changes require consequence assessment and robustness analysis
  • When decisions require clear assumptions and traceable evidence
  • When the organisation needs to improve its technical understanding of a system

Start an assignment

Briefly describe the system and the problem – and what type of deliverable is needed. Response with a proposed approach normally within 1–2 business days.

Contact us kontakt@antranova.se