CFD Modelling for Hatchery Discharges – Presented at SETAC North America
We are delighted to share our latest work, made possible by our client Dynea A.S. and development partner LiberLocus, which will be presented next week at the 46th SETAC North America Annual Meeting in Portland, Oregon.
Our poster, titled 'Modelling of Chemical Discharges from Atlantic Salmon Hatcheries Using Computational Fluid Dynamics (CFD)', showcases how CFD can be employed to simulate the dispersion of chemicals from large Norwegian flow-through Atlantic salmon hatcheries. This approach provides a scientifically robust and defensible basis for environmental risk assessments at both national and local scales.
Traditional dilution factors obviously fail to capture the intricate hydrodynamics involved. By utilising CFD, we demonstrate how regulators and operators can predict the size and duration of mixing zones, ensuring compliance under the most adverse discharge scenarios. The discharge of freshwater into tidal saltwater is inherently complex, with initial dilution influenced by jet speed and plume buoyancy. Consequently, outfall pipe diameter and depth become critical design considerations. The situation further becomes intricate when considering tidal streams, striation, and riverine inputs, however CFD can accommodate the most complex scenarios.
We look forward to connecting with colleagues and fellow modellers in Portland.
Presented at the 46th SETAC North America Annual Meeting, Portland, OR, November 2025.
The full poster (Hargreaves, Tveter & Korkut, 2025) is now available for download here:
Speaker Bio: Tom Hargreaves
Tom is a Co-Owner and Head of Agrochemical & Pharmaceutical Regulatory Compliance at Blue Frog Scientific – a consultancy recognised for its excellence and integrity in regulatory compliance.
With nearly 30 years of experience in regulatory science, Tom has worked for multiple laboratories and consultancies, helping companies navigate complex regulatory obligations. His expertise spans plant protection products and biopesticides, having played a key role in bringing some of the earliest biopesticides to the European market.
As a strategic leader, Tom brings a unique blend of science, mathematics, lateral thinking, and creativity to risk assessment and regulatory planning. His deep understanding of environmental and human health assessments ensures reliable and innovative solutions for clients.
If you're excited about the topic of modelling for chemical regulation, and would like to talk with Tom... send us a message and we'll arrange a call!
