FLACS Features & Benefits

Advanced CFD tool for simulating fires, explosions, and gas dispersion in complex environments.

Accurate modelling for complex 3D geometries

FLACS excels in simulating hazard behaviour in complex industrial environments, including confined spaces, uneven terrains and obstacle-filled layouts. By accounting for real-world geometrical effects, FLACS delivers actionable insights to guide facility designs and risk mitigation strategies.

Trust results built on 40+ years of research

FLACS is backed by one of the most comprehensive validation processes in the industry. Our automated framework compares simulations against real-world data from over 1,100 experiments and incidents, ensuring accuracy and reliability you can trust. This process is continuously refined with new data from both internal and external testing.

Detailed outputs for safer, smarter decisions

FLACS generates a wide range of outputs, including gas concentrations, overpressure levels, thermal radiation and flow rates. These results can be visualised interactively with Flowvis or integrated into broader workflows via the Python API, enabling engineers to compare scenarios, explore data and develop optimised safety strategies.


See hazards clearly, communicate effectively

FLACS provides realistic 3D visualisations of hazard scenarios, enabling you to clearly demonstrate risks to stakeholders and regulators. With detailed visuals, you can build trust, streamline decision-making and align all parties toward a common safety strategy.


Address critical safety challenges with ease

From modelling explosion overpressures to simulating hydrogen releases and assessing toxic gas dispersion, FLACS helps you manage a wide range of safety scenarios. The integrated DIPPR® database simplifies hazard-specific modelling with access to over 1,800 chemical components, letting you simulate with confidence.

Future-ready for hydrogen, ammonia, and beyond

FLACS is equipped to address safety challenges in emerging energy sectors, including hydrogen storage, ammonia releases, battery thermal runaway and carbon capture systems. With specialised modules and proven accuracy, FLACS enables safe operations for future-focused industries.

Streamlined setup and scenario management

FLACS simplifies simulation workflows with its intuitive CASD pre-processing interface, enabling users to create, import and clean geometrical models quickly. With auto grid functionality and easy setup, engineers can focus on solving safety challenges instead of navigating software.


Tailored solutions for your business needs

FLACS offers flexible licensing options, including standalone, network and cloud-based solutions. Whether you are a single user or managing large-scale projects, FLACS provides scalable pricing to ensure cost-effective access to industry-leading CFD tools.


Learn from experts, connect with peers

Gain practical skills and insights with FLACS’ comprehensive training programmes, including beginner and advanced courses. Join the FLACS-User Group to collaborate with a global community of safety professionals, sharing best practices and solving emerging challenges together.


Trusted by experts worldwide

FLACS is the CFD software of choice for leading organisations in oil and gas, chemicals, energy and beyond. Its proven track record in improving safety outcomes and regulatory compliance makes it an essential tool for high-risk industries.

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