Boundary Layer Wind Tunnel BLWT


  • Boundary layer simulation for three terrain categories (to ČSN EN 1991-1-4, category II farm land, category III front-urban terrain, and category IV urban terrain)
  • Design and manufacture of scale models for measurement in BLWT
  • Static and dynamic wind load measurement
  • Measurement of wing induced load acting on pedestrians (pedestrian comfort) in complicated topology
  • Measurement of wind force fields around tested subjects
  • Measurement of emission scatter over terrain modeled
  • Flow visualization




Tunnel with simulated atmospheric boundary layer (Boundary Layer Wind Tunnel)

  • Atmospheric boundary layer simulation for II., III., IV. terrain categories to ČSN EN 1991-1-4
  • Tunnel working section 16 m x 1.8 m x 1.5 m



  • Three-channel hot wire anemometer DANTEC Dynamics
  • Advanced pressure gauge system to measure up to 96 channels
  • PIV system to determine wind stream fields
  • Flame ionizing chambers to measure emission scatter
  • Speed cameras with recording frequency up to 65 kHz
  • Helium bubbles generator for flow visualization



  • Civil engineering designers
  • Civil defence institutions
  • Organization involved in analyzing weather conditions as requested by power engineering, town planning, agriculture and forestry
  • Forensic experts in building industries



Ing. Jiří Fiala
Head of Aerodynamics, VZLÚ
Tel: +420 225 115 260