Antranova Antranova Engineering AB Systems Engineer · Field and Analysis

AntraSIM

Physics-based simulation tools developed by Antranova Engineering AB. Each simulator demonstrates how a real technical system can be reconstructed as an interactive model for analysis, fault investigation, and education.

Do you need to simulate a technical phenomenon, analyse an operating case, or create a practical training tool for plant personnel? Contact Antranova Engineering AB. Here, nearly thirty years of engineering experience are combined with modern AI-supported model development to make complex systems understandable, testable, and visual.

Simulator overview

Simulator Domain ID Version Launch
CDS-100 — Cooling Loop Process Simulator Process and cooling systems AntraSIM-0000 v1.0.3 Launch
Pump Flow Discontinuity Simulator Pump analysis AntraSIM-0010 — Launch
Pump Network Simulator Pump systems and pipe networks AntraSIM-0020 v1.0.1 Launch
h–s (Mollier) Diagram Simulator Thermodynamics AntraSIM-0050 v1.1.0 Launch
T–s Diagram Simulator Thermodynamics AntraSIM-0060 v1.1.0 Launch
Xe-135 / Sm-149 Poisoning Simulator Reactor physics AntraSIM-0070 v1.0.2 Launch
Point Kinetics Simulator Reactor kinetics AntraSIM-0080 v1.0.0 Launch
Decay Heat Simulator Reactor thermal analysis AntraSIM-0090 v1.0.2 Launch
Neutron Moderation Simulator Reactor physics AntraSIM-0100 v1.0.0 Launch
Neutron Life Cycle Simulator Reactor physics AntraSIM-0110 v1.0.0 Launch
Two-Group Diffusion Core Simulator Core physics and control rods AntraSIM-0120 v1.0.0 Launch
Reactor Startup Simulator Reactor kinetics AntraSIM-0130 v1.0.0 Launch
Reactivity Coefficients Simulator Reactivity feedback AntraSIM-0140 v1.0.0 Launch
Fuel Burnup Simulator Fuel burnup AntraSIM-0150 v1.0.0 Launch
BWR Power Flow Simulator BWR dynamics AntraSIM-0160 v1.0.0 Launch

Analysis tools

Process and pump systems

CDS-100 — Cooling Loop Process Simulator

A physics-based simulator of an industrial cooling and heating circuit. Includes live P&ID with pump and valve controls, real-time trend charts, PID regulation, alarm handling, and a 3D system view. Demonstrates how a process system can be reconstructed and analysed as an interactive model — showing flow, heat transfer, and transient behaviour across operating scenarios.

Type: Process simulator · Level 1 fidelity demonstrator · ID: AntraSIM-0000 · Version: v1.0.3
Launch simulator

Pump Flow Discontinuity Simulator

An analytical simulator for studying discontinuous flow behaviour in pump systems. Visualises how pump curve shape, system resistance, and operating speed interact to produce low-flow stall, recirculation, and abrupt transitions between flow regimes. Relevant for pump selection, protection strategy, and fault analysis in industrial systems.

Type: Pump analysis tool · Educational / analytical · ID: AntraSIM-0010
Launch simulator

Pump Network Simulator

A network solver for multi-pump systems. Define pump characteristics, pipe resistances, and network topology; the solver computes steady-state operating points across all branches using node-branch analysis. Supports parallel and series pump configurations. Suitable for design verification and fault investigation in complex pump networks.

Type: Network solver · ID: AntraSIM-0020 · Version: v1.0.1
Launch simulator

Thermodynamic diagrams

h–s (Mollier) Diagram Simulator

An interactive h–s (Mollier) diagram for water/steam based on IAPWS-IF97 (regions 1, 2, 3, and 4). Place state points by clicking or by entering p/T/h/s/x, connect them into real process paths, and read off efficiency, enthalpy drop, and steam quality directly. Includes isobars, isotherms, quality lines, and isochores, independent process paths, and export/import of the complete workspace settings.

Type: Thermodynamic diagram tool · ID: AntraSIM-0050 · Version: v1.1.0
Launch simulator

T–s Diagram Simulator

An interactive T–s diagram for water/steam based on IAPWS-IF97 (regions 1, 2, 3, and 4). Shares the same calculation kernel as the h–s simulator but plots temperature on the ordinate, making heat transfer visible as the area under the process path. Isobars, isenthalps, and quality lines, state points by clicking or by p/T/h/s/x entry, and independent process paths with complete workspace settings export/import.

Type: Thermodynamic diagram tool · ID: AntraSIM-0060 · Version: v1.1.0
Launch simulator

Reactor physics and reactor dynamics

Xe-135 / Sm-149 Poisoning Simulator

A point-depletion model for the I-135 → Xe-135 and Pm-149 → Sm-149 chains under simple or table-driven reactor-power histories. Shows fission-product poisoning transients, equilibrium levels, restart behaviour after power changes, and reactivity effect in pcm and dollars, with editable constants, scenarios, configuration handling, and export.

Type: Reactor-physics transient model · ID: AntraSIM-0070 · Version: v1.0.2
Launch simulator

Point Kinetics Simulator

Six-group point kinetics with prompt and delayed neutrons plus simplified fuel-temperature and moderator-void feedback. Compare RK4 and explicit Euler, inspect transients for power, reactivity, precursor concentrations and feedback effects, and run the built-in verification suite directly in the browser.

Type: Reactor-kinetics transient model · ID: AntraSIM-0080 · Version: v1.0.0
Launch simulator

Decay Heat Simulator

Compares a simplified ANSI/ANS 5.1-2005 table interpolation with a legacy ANS-79 power-law approximation for decay heat after reactor shutdown. The tool provides log and linear plots, an inspection point, MWth results, relative model difference, and export of results and configuration.

Type: Reactor thermal comparison tool · ID: AntraSIM-0090 · Version: v1.0.2
Launch simulator

Neutron Moderation Simulator

A Monte Carlo model of elastic neutron slowing-down in moderators such as light water, heavy water, graphite, and beryllium. Shows energy loss per collision, collisions to thermalisation, moderating power, and comparisons with analytical reference calculations.

Type: Reactor-physics training tool · ID: AntraSIM-0100 · Version: v1.0.0
Launch simulator

Neutron Life Cycle Simulator

A neutron-balance simulator from generation to generation using the six-factor formula, non-leakage probabilities, branching-process behaviour, and shutdown-margin reactivity components. Supports training on criticality, reactivity, leakage, and core margins.

Type: Reactor-physics balance model · ID: AntraSIM-0110 · Version: v1.0.0
Launch simulator

Two-Group Diffusion Core Simulator

A core-physics model for flux shapes, control-rod worth, and reactivity contributions. Uses axial and radial flux shapes with first-order perturbation theory and neighbouring-rod shadowing to visualise rod patterns, marginal worth, and insertion sequences.

Type: Core-physics control-rod simulator · ID: AntraSIM-0120 · Version: v1.0.0
Launch simulator

Reactor Startup Simulator

Six-group point kinetics with a neutron source for startup transients, subcritical multiplication, rod withdrawal, and counting statistics. Shows how reactivity, power, period, and measurable signal evolve during a controlled startup from low neutron level.

Type: Reactor-kinetics startup model · ID: AntraSIM-0130 · Version: v1.0.0
Launch simulator

Reactivity Coefficients Simulator

A model for Doppler broadening of a representative U-238 resonance and moderator-density effects on reactivity. Visualises Doppler contribution, moderator temperature coefficient, void effect, boron influence, and combined power-defect behaviour.

Type: Reactivity feedback tool · ID: AntraSIM-0140 · Version: v1.0.0
Launch simulator

Fuel Burnup Simulator

A zero-dimensional one-group burnup model for uranium, plutonium, fission products, and gadolinia. Computes isotopic evolution, reactivity history, cycle length, and axial zoning with a fixed power shape for training and principle analysis.

Type: Fuel and core burnup model · ID: AntraSIM-0150 · Version: v1.0.0
Launch simulator

BWR Power Flow Simulator

A BWR manoeuvring model with point kinetics, void, Doppler and pressure feedback, steam balance, and a power-flow map. Enables study of flow changes, rod manoeuvres, bypass demand, and pressure set-point changes as coupled reactor-dynamics transients.

Type: BWR dynamic manoeuvring model · ID: AntraSIM-0160 · Version: v1.0.0
Launch simulator

Disclaimer: All simulators are principle simulators intended exclusively for demonstration purposes. They have not been validated against real installations and must not be used as a basis for technical evaluations, dimensioning, safety assessments, or decisions regarding actions in real systems.