Marine: Engine Room Ventilation System of a Ship

What You'll Build

This lesson walks you through a complete CFD simulation of a ship's engine room ventilation system — one of the most critical thermal management challenges in marine engineering. Engine rooms house compressors, pumps, fans, diesel engines, and electric motors, all packed into a confined space and all generating significant heat. Without proper ventilation, equipment overheats, efficiency drops, and safety risks rise.

In this project, you'll simulate how injected cool air at 300 K distributes through the engine room and removes heat from operating machinery, allowing you to evaluate ventilation effectiveness and identify hot spots.

What You'll Learn

• How to import and prepare a 3-D engine room geometry using SpaceClaim

• How to generate an unstructured mesh (~706,000 cells) for a complex internal flow domain with multiple equipment volumes

• How to activate and configure the energy equation for heat transfer simulations

• How to define volumetric heat sources in cell zone conditions — 12,500 W/m³ for diesel engines and 8,333.33 W/m³ for electric motors — to model machinery as distributed heat generators

• How to set up marine-specific boundary conditions: mass-flow inlet (35 kg/s at 300 K) for the supply air and dual pressure outlets for natural exhaust

• How to choose appropriate turbulence and solver settings for internal forced-convection ventilation

• How to post-process temperature, velocity, and pressure contours, plus streamlines and velocity vectors showing how cool air reaches hot equipment surfaces

• How to interpret the results to evaluate ventilation effectiveness — identifying whether cool air actually reaches the hottest machinery zones

Why It Matters

Engine room ventilation design is a core responsibility in shipbuilding and naval architecture. The same CFD workflow you build here — volumetric heat sources, forced ventilation, internal recirculation — applies directly to engine rooms in submarines, ferries, cargo vessels, and offshore platforms, as well as to data centers and industrial machinery enclosures on land.