Research

Services

The teams of the CSTB mobilize large-scale and small-scale digital and experimental resources to optimize solutions that guarantee the stability, resistance and performance of structures, thereby achieving safety and comfort.

Expertise

The research teams offer a wide variety of cutting-edge experimental and digital services in aerodynamics, for a broad assortment of applications:

Buildings (museums and buildings open to the public, high-rise buildings, bridges, stadiums, cranes, facade components...

  • Pre-sizing of structures
  • Analysis of the aerodynamic forces exerted on buildings (local and overall loads and dynamic contribution)
  • Dynamic response of bridges on small-scale aeroelastic models
  • Study of the wind resistance and vibration behavior of structures (full scale)
  • Study of the aeroacoustic behavior of structures.
  • Aerothermodynamics of large volumes.
  • Simulation of indoor ventilation systems
  • Calculation of the transport of pollutants and plume behavior, accounting for thermal phenomena
  • Studying the behavior of marine structures and oil rigs; the offshore industry
  • Analysis of site effects on cranes
  • Characterization and optimization of wind comfort

Automotive and rail

  • Analysis of the weatherproofing of vehicle interiors and of sensitive zones under the hood
  • Display and measurement of water film thicknesses on bodywork and windows
  • Qualification of the operation of windshield wiping systems up to 250 km/h
  • Analysis of two-phase flows
  • Optimization of competition or convertible vehicles
  • Study of the behavior and approval of trains in crosswinds
  • Aerodynamic analysis of appendages, including pantographs

Resources

Experimental and digital methods

  • Visual displays of flows
  • Laser surface Velocimeter analysis using Particle Image Velocimetry (PIV)
  • Trajectography
  • Displacement sensors, accelerometers
  • Dynamometric scales
  • High-resolution, high-frequency pressure measurements
  • Exciters, shakers, etc.
  • Digital simulation of airflows and two-phase flows
  • Commercial and open-source codes for CFD: Computational Fluid Dynamics

Technological platforms

  • Jules Verne climatic wind tunnels for full scale prototypes
  • Atmospheric wind tunnels for reduced scale models
  • Wind tunnels dedicated to the calibration of anemometers (MEASNET accreditation)
  • Dedicated test benches: roller benches, brake test benches

References