Fluid System Modeling

FluidBuilder™

FluidBuilder is a high-precision thermal-hydraulic modeling tool optimized for real-time simulation. It reliably represents a wide range of fluid flow conditions, from normal and transient operations to accident scenarios.

FluidBuilder™

FluidBuilder™ is an advanced fluid system simulation builder designed to model, with high fidelity, the dynamics of complex thermal-hydraulic systems (including BOP) in nuclear power plants, thermal power plants, and process facilities.

It accurately reproduces two-phase flow behavior, non-equilibrium states, and energy transfer and mass flow under a wide range of operating conditions.

With a GUI-based environment and automated configuration capabilities, FluidBuilder™ dramatically reduces the time required from model design to simulation readiness, while enhancing the reliability and credibility of the final results.

Key Messages

High-precision, physics-based real-time simulation

• Adopts a two-phase non-equilibrium model to accurately represent the thermodynamic behavior of coolants and working fluids
• Supports high-speed, high-fidelity computation across NSSS and BOP systems
• Optimized architecture for real-time operational scenarios in power plants

Automated development and code generation

• Automates code generation and incorporates validation functions to significantly reduce development time
• Enables fast and reliable iteration and documentation when design changes occur
• Minimizes inconsistencies when integrating multiple components and subsystems

Intuitive visual environment (GUI)

• Advanced JADE-based GUI with drag-and-drop component design
• Visualizes fluid flow paths and system interconnections in diagram form
• User-centric interface allows even beginners to perform modeling with ease

Advanced Features

Dynamics-centered six-phase separated analysis
Based on two-phase flow, independent equation models are applied to a total of six phases.
Multiple variables such as temperature, density, pressure, and velocity are processed independently.
Robust response to transient and accident conditions
Supports physics-based simulations for abnormal conditions such as rapid cooling, pipe rupture, and chemical reactions.
High-performance icon library
Enables asset-based network configuration using an extensive icon library, enhancing engineering intuition and modeling efficiency.
Integrated multi-system interface
Supports integrated modeling with NSSS, electrical, and control systems.
OPC and API connectivity are fully supported.

Representative Application Areas

Nuclear power plants: PWR, BWR, SMR, PBMR, and other reactor types
Thermal and combined-cycle power plants
BOP systems for process industries and medium-to-large-scale plants
Training simulators and design verification tools
Emergency response and accident analysis systems

Expected Benefits

Reduced development time
Rapid deployment through automated code generation and template-based design.
High operational scenario fidelity
Delivers high analytical accuracy across a wide range of operating conditions.
Flexible scalability
Easily adapts to integrated, multi-domain system architectures.
Structural reliability assurance
Ensures design consistency based on a structure-centric engineering philosophy.

Brand Philosophy Message

PowerBuilder is not merely a tool for modeling fluid systems.
It is a framework for designing structures that eliminate human error.

We believe technology should propose optimal system architectures tailored to each operational environment—
creating systems where structure, not people, prevents failure.

This philosophy is embedded in every function of FluidBuilder.