GRAL air dispersion modelling

Trinity has substantial experience providing air dispersion modelling with the Graz Lagrangian Model (GRAL) and is highly skilled in using the model to its full potential.

What is GRAL?

The Graz Lagrangian Model (GRAL) predicts air quality impacts among complex structures.

It is a powerful tool that is becoming widely accepted for air quality assessments.

GRAL is used to predict and understand how pollutants from industrial plants, traffic, generators, and ventilation systems impact the environment.

Why use GRAL?

GRAL is one of the most sophisticated air dispersion models in Australia, especially for modelling complex built environments.

The model enables the modelling of wind flow around buildings and structures, making it ideal for assessing impacts in the vicinity of structures that could potentially create localised wind patterns.

Additionally, GRAL is the only Lagrangian model used in Australia capable of modelling sources with horizontal flow, such as tunnel portals or exhaust vents (louvres).

The Trinity team is highly skilled in using GRAL to its full potential. We ensure your assessments are as close to reality as possible, following best practices and recommended model setups.

Why Choose Trinity

Trinity capabilities

We create a variety of outputs and scenarios to fit your project, from simple tasks to complex research projects.

Meteorological modelling

Air dispersion modelling

Post-processing and analysis

Working with Trinity

Our air dispersion modelling assessments are recognised and trusted throughout Australia.

They are routinely included in development approval applications submitted to local councils or state environmental licensing applications.

Our GRAL modelling clients include many town planning and building and major infrastructure companies.

See some of our featured projects below. Or contact us to discuss your requirements.

Trinity solutions

Lower Wonga, Queensland, Australia