Is your ship’s exhaust going where it shouldn’t?

Understand, solve and optimise your exhaust problems with CFD: from air quality and heat to hull staining and underwater exhaust.

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Exhaust problems are not always visible on the drawing

You may be dealing with:

Exhaust gases reaching air intakes or accommodation areas
Unwanted smells or poor air quality on deck
Soot and staining on the hull
Excessive heat around structures or equipment
Unexpected exhaust behaviour around the waterline
Problems with underwater exhaust
A design that needs to be changed to meet project or regulatory requirements

Using tools such as Simcenter STAR-CCM+, these effects can be visualised and quantified early in the design process with Computational Fluid Dynamics (CFD), allowing engineers to compare alternatives before physical changes are made.

What can we help you solve?

- Exhaust dispersion: See where exhaust gases travel under different wind, flow and operating conditions.
- Air quality & recirculation: Investigate whether exhaust gases can reach cabins, ventilation systems, air intakes or working areas.
- Hull staining: Understand how exhaust interacts with the flow around the hull and identify configurations that can reduce soot deposition.
- Underwater exhaust: Simulate the interaction between underwater exhaust, the vessel and surrounding water to understand where exhaust gases travel.
- Heat & temperature: Assess temperature distribution around exhaust outlets, structures and nearby equipment.
- Exhaust design & optimisation: Compare different outlet positions and configurations before committing to costly changes.

Parametric CFD and design exploration can also be used to evaluate multiple design variants systematically and identify promising configurations faster. These workflows can be performed by Femto’s engineers or implemented within your own engineering organisation using Simcenter STAR-CCM+.

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Case study: Solving Exhaust Gas Propagation Problems

Femto uses CFD method and Simcenter STAR-CCM+ to investigate exhaust dispersion around ships, including its interaction with wind, waves and cabin air intakes. The analysis helps identify potential problems and optimise exhaust design before or after they occur.

Why maritime companies choose Femto Engineering?

Femto offers agile engineering services and shorter response times, while maintaining high technical quality.

You get:

30+ years of (martime) CAE experience
Maritime experience: Extensive experience supporting leading European shipbuilders.
Fast engineering capacity: Qualified simulation engineers available within days.
Multi-physics expertise: Structural analysis, CFD and system simulation under one roof.
Proven track record: Trusted by leading maritime companies for complex engineering challenges.
As Siemens Gold Partner, we combine deep technical CFD expertise with in-depth knowledge of Simcenter softwares. We have direct access to the latest software updates, including: Simcenter Femap, Simcenter 3D, STAR-CCM+, Amesim, and the solutions from Altair.

Need help with your exhaust?

Whether you need help to solve a complex exhaust problem, additional CFD capacity for a project, or the tools and expertise to perform these analyses yourself. Femto supports all three: with CFD consultancy, Simcenter STAR-CCM+ software and practical implementation support.

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