Computational Fluid Dynamics

Longitude Engineering has extensive experience covering fluid flow problems and the use of turbulence-resolving modelling approaches for various physical and application areas. Our specialists have been working across all industries with special focus in the marine, energy and other offshore sectors.

Custom developed Tools and dedicated in-house services

We develop and use the open source OpenFOAM® CFD Toolbox on our dedicated in-house multiprocessor CFD computer and utilise cloud computing services for quick processing of results. The applications of Computational Fluid Dynamics (CFD) are many and varied, however some specific applications are outlined below.

Aerodynamics

Aerodynamics modelling allows us to understand the air flow around marine vehicles or offshore structures for design improvement as well as efficient operation. Our scope of work covers all aspects of aerodynamic analysis relating to the marine vehicle or offshore structure including flight-deck turbulence and wind loads. Using turbulence-resolving modelling approaches such as Large Eddy Simulation (LES) or Detached Eddy Simulation (DES) gives us some idea about the boundary layer profile,  velocity and pressure distribution around the vehicle or structure including forces and moments, which helps us to optimize the design and improve aerodynamic efficiency.

Typical analysis type include:

  • Flight-deck turbulence computations
  • Exhaust gas plume studies
  • Aerodynamic performance of Blades
  • Vortex induced vibrations
  • Wind turbine loadings due to large-scale turbulence

Hydrodynamics

CFD allows us to analyse, understand and improve flow around ship hulls, propulsors, rudders and energy saving devices. Our CFD code is continuously validated with both model and ship-scale measurements and can predict with high level of accuracy resistance and propulsive performance in both calm water and various sea conditions resulting in a fast turnaround time in the design phase.

Typical analysis types include:

  • Resistance and powering calculations
  • Wake flows and appendage alignments
  • CFD based derivatives for manoeuvring prediction
  • Tugs and tow force analysis
  • Hull-propeller-rudder interaction
  • Hull optimisation

Thermal Analysis

Our typical analysis types include:

  • Optimisation of electronics package cooling
  • Printed circuit board designs
  • Heat exchanger design and analysis

Key Contacts

Defence and Small Craft Lead

Southampton, Longitude

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Case Studies View All

Veja Mate OWF – Siem Aimery Cable Installation Study

Longitude was instructed by Siem Offshore Contractors GmbH (SOC) to carry out a cable installation analysis relating to the inter-array cables (CAF 1620 and CAF 1621) for the Veja…

OFON Phase 2 Dynamic Lift Analysis

The OFON Phase 2 project involves the installation of four new platforms at the OFON field, which is 30 kilometres from the Nigerian coast in 40 metres of water. Longitude…