Turbo-machinery / Wind turbine flows

External Aerodynamics and aerospace CFD

In case of an aircraft external aerodynamics CFD the air forces acting on existing, newly mounted or modified surfaces can be estimated, among others. This will deliver valuable information to the design engineering staff to properly size parts under influence of strong turbulence, high velocities and thus 3D forces.

  • Lift and drag forces on components and modifications
    • Different angle of attack, yaw and turbulent cases
    • Analysis of airframe components such as landing gear, high lift configuration, nacelles etc.
    • Airframe and part load analysis
  • Transient simulation of time-dependent flow structures
    • Effect of turbulent structures
    • Changing wind conditions
    • High angle of attack: transient CFD is necessary
  • Preliminary design
    • Analysis of modified or newly built-in components
    • Steady and time varying air force development on parts for further static and dynamic structural analysis
    • Identification of extreme conditions and loads
    • Comparison of different designs for wind loads
  • Flow-thermal analysis
    • Steady and time dependent thermal analysis of parts
    • Heating/cooling of components
    • Heat radiation analysis 

    Internal flows in Aerospace CFD

    Passenger comfort is a very crucial parameter in case of the  of an airplane cabin. Especially in case of refurbishments, the plenum, duct-work and other components of the HVAC system is modified. To get a detailed qualitative and quantitative picture about the cabin velocity and temperature profiles, a very cost-effective and fast computational fluid dynamics analysis can be executed. Besides cabin comfort, the acoustics, pressurization and preliminary smoke management can also be simulated easily with with aerospace CFD modelling.

    • Cabin (cockpit, passenger or cargo) and HVAC
      • Temperature and airflow distribution
      • Ventilation performance
      • Cooling air flow for cabin components
      • Ventilation analysis of toilets and kitchen
      • Analysis of redesigned HVAC channels and plenum performance
    • Acoustics
      • Identification of potential noise sources
      • Aeroacoustic analysis of HVAC components, fans, blowers and air channels
    • Human comfort
      • Calculation of human comfort parameters from air temperature, speed and humidity
      • Age of air calculation: identification of badly ventilated areas
    • Cabin pressurization
      • Pressure effect on interior components
      • Rapid decompression transient analysis and preliminary force calculation
    • Fire and smoke
      • Preliminary analysis of smoke propagation
      • Visibility in case of fire
      • Radiation and heat load
      • Elimination of smoke from the space

    Sloshing CFD of liquids and multiphase flows

    Sloshing and movement of liquids in compartments and pipes are physically complex  and transient phenomena therefore hand calculations can not be used investigate it. Nowadays CFD techniques make it possible to compute and visualize the time-dependent behavior of liquids in any compartments such as fuel tanks. As on outcome of the CFD simulation, the forces acting on the container walls can be determined, among other quantities.

    • Fuel tank
      • Sloshing of fuel at extreme conditions (landing, turbulence)
      • Forces appearing on tank wall
    • Liquid sloshing in closed volumes
        • Fluid movement in redesigned compartments
        • Forces and pressures applied by sloshing on container walls

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