# Why 3D thruster flow modelling outperforms 2D methods

- Link: https://www.directorstalkinterviews.com/why-3d-thruster-flow-modelling-outperforms-2d-methods/4121197269
- Published: 2025-05-19T16:33:00+01:00
- Author: Amilia Stone

Offshore operations demand precision, especially when it comes to understanding 
how thruster-induced flows interact with the seabed. RYDER’s latest study reveals
that traditional 2D modelling may not suffice, highlighting the critical advantages
of adopting 3D computational fluid dynamics (CFD) for accurate seabed impact assessments.

In the realm of offshore engineering, the accuracy of seabed interaction assessments
is paramount. RYDER’s recent comparative study between two-dimensional (2D) and 
three-dimensional (3D) modelling of thruster-induced flows underscores the limitations
of conventional methods and the necessity for more advanced approaches.

2D modelling, while computationally less intensive, simplifies the complex interactions
between thruster flows and seabed topography by isolating the vertical plane and
neglecting horizontal flow components. This oversimplification can lead to underestimations
of scour potential and sediment displacement, posing risks to vessel positioning,
berthing operations, and the integrity of subsea assets.

Conversely, 3D modelling captures the full spectrum of flow dynamics, providing 
a realistic representation of how thruster-induced currents interact with the seabed.
RYDER’s analysis demonstrates that 3D simulations reveal asymmetric flow distributions
and more accurately predict threshold of motion values, essential for assessing 
sediment stability and potential scour zones.

The implications of these findings are significant for offshore operations. Accurate
modelling informs better decision-making in vessel manoeuvring and asset placement,
reducing the risk of unexpected seabed erosion and ensuring the longevity of infrastructure.
RYDER’s advanced 3D CFD capabilities offer clients enhanced confidence in their 
seabed impact assessments, promoting safer and more sustainable offshore activities.

_**[Tekmar Group plc](https://www.directorstalkinterviews.com/company/tekmar-group-plc/tgp.l)**(
LON:TGP) vision is to be the leading provider of technology and services to the 
global offshore energy markets. The Group’s three primary operating companies are
RYDER, Tekmar Energy and Pipeshield International._

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