Tecnitas teams own dedicated  skills for the modelling of specific problem, such as optimization of hull lines in order to optimize the energy efficiency, seakeeping, evaluation of the motions of a unit submitted to a given environment, general behaviour of vessel facing waves conditions, lashing of the cargo, etc…

Seakeeping Analysis

Tecnitas specialists use HydroSTAR, which is the Bureau Veritas state-of-the-art hydrodynamic software, used to evaluate 1st & 2nd order wave loads and induced motions of one or several ships or marine structures of any type in deep and finite water depth.

Hydro-Structure Interaction

Tecnitas specialists use Homer, which is the Bureau Veritas direct hydro-structure calculations software, used for computations of structural response of a floating unit facing given wave conditions.

Homer is based on an advanced coupling method developed in Bureau Veritas Research Department, and interfaces hydrodynamic solver (HydroSTAR) with a structural solver (NX Nastran, MSC Nastran, Ansys or Abaqus). 

Computer Fluid Dynamics

The Computer Fluid Dynamics (CFD) calculations had became more and more often an inevitable part of the design of structures and systems involving fluids, especially in the marine and offshore sectors.

There is a real need to simulate more and more complex hydrodynamic phenomena both for optimizing the normal in-service operations (energy saving, manoeuvrability…) and for preventing the potential detrimental effects induced by unexpected events and complex situations which cannot be easily assessed either by analytical calculations or by model tests.   

Tecnitas can propose integrated analyses involving advanced fluid-structure interaction. This kind of analysis is performed with the support of HydrOcean, a dedicated company specialised in advanced CFD simulations.

CFD calculations are particularly useful in the context of shaft alignment calculations for determining the values of propeller forces and moments in normal operating conditions (straight course) but also in specific conditions which might be critical for aft stern tube bearing (turning condition, one dead-locked propeller in case od a twin screw vessel).

The efficient use of numerical simulation tools is intimately linked with the expertise of engineers, the number of licenses, the accuracy and speed of the solvers that are used, and the number of processor. HydrOcean owns a unique and dedicated CFD platform including:

  • 8 complementary numerical solvers (RANSE, potential, SPH...)
  • Unlimited number of licenses of in-house CFD solvers
  • Hull modeller, meshing and data processing software
  • Access to over 8000 CPU cores

Numerical simulation provides major advantages compared with experimental and sea tests, in terms of :

  • Time schedule
  • Cost
  • Accuracy

HydrOcean proposes global services including engineering services performed by experimented engineers.