Aerodinamik Laboratuvarı

Aerodinamik laboratuvarı genel olarak rüzgar türbini rotor aerodinamiği, akış kontrol sistemleri, rüzgar türbini iz etkileşimleri ve rüzgar çiftliklerinin simülasyonu üzerine çalışmalar yapmaktadır.

Sayısal çalışmalar, merkez bünyesinde geliştirilmiş özgün yazılımlar (BEM, serbest-iz, Düzensiz Reynolds Ortalamalı Navier-Stokes) ve çeşitli ticari yazılım paketler ile sürdürülmektedir. Deneysel çalışmalar ise 2 boyutlu ve 3 boyutlu zaman-çözünürlüklü Parçacık Görüntülemeli Hız Ölçer gibi optik ölçüm sistemleri ile yürütülmektedir. Ölçeklendirilmiş rüzgar türbini modelleri ve 2 boyutlu kanat modelleri üzerinde basınç ve kuvvet ölçümleri yapılabilmektedir.

Çalışmalarda kullanılan yazılımlar ise şunlardır:

        • AeroSIM+
        • WindSIM
        • ANSYS

 

           

Doç. Dr. Oğuz Uzol

Laboratuvar Koordinatörü

uzol@metu.edu.tr

 

Rüzgar Tünelleri ve Ölçüm Ekipmanları

Particle Image Velocimetry

TSI Incorporated

  •  Two Dimensional, Stereoscopic, Time-Resolved, Particle Image Velocimetry System
  • Litron LDY304 series diode pumped Q-switched Nd: YLF high repetition rate (0.2-20 kHz) laser. The laser is a dual power, dual cavity with output energy at 1 kHz at 527 nm up to 30 mJ per laser head per pulse
  • Two 12-bit high speed (Phantom V640) digital camera with a maximum resolution of 2560x1600 pixels at a frequency of 1.5 kHz (4 megapixel at full resolution) and 16 GB of internal memory buffer
  • A Model 610036 LASER PULSE Synchronizer
  • A 3-Axis ISEL heavy duty traverse system utilized for capturing image data at multiple planes in a flow.
  • A six-jet oil droplet generator that utilizes a Laskin nozzle to generate droplets of 1 µm in diameter, used for flow seeding. Pressurized air atomizes oil in the generator reservoir to produce the droplets. These generators are best used with olive oil. 
  • INSIGHT 4G Acquisition Data System Software
  • LASER PULSE Light Arm
  • Various Light Sheet Optics. Various camera lenses and filters
  • Breadboard, Laser safety Glasses

 

                              

                               

                                

Pressure Measurement

Measurement Specialties

 

  • 128-channel ESP pressure scanner  units

-          DTC Initium DAQ pressure measurement system

 

  • 16-channel DSA pressure Scanner from Scanivalve Corp

 

Applications:

  • 5-hole pressure probe
  • Pitot-static pressure probes
  • Kiel probe

Surface pressure measurements on wings

                

                     

Data Acquisition System

 

  • NI Compact DAQ -9172 8 slot USB Chassis

-          2 x 32-channel NI-9205 analog input module

-          8-channel NI-9472 24 V Sourcing Digital Output

-          4-channel NI-9211 Thermocouple analog input module

  • NI Compact RIO-9076 4 slot Ethernet Chassis

-          NI-9512 1 Axis Stepper Drive Interface Module

  • LABVIEW programing software

 

Applications:

  • Constant Temperature Anemometry (CTA) Measurements
  • Pressure Measurements
  • Motion Control Measurements

 

                                                  

                   

High Precision Force/Moment Balance

 

  • Load balance system equipped with 6-axis ATI Force/Torque transducers
  • Equipped with a stepper angle motor for angle of attack adjustment

 

Applications:

  • Aerodynamic characteristics measurements of wing and bridge models in wind tunnels

                    

Model Wind Turbine Test Rig

 

Specifications:

  • 1 m to 1.4 m diameter rotors (adjustable pitch angles)
  • Ability of air injection from hub to the channels in blade roots to investigate active flow control for various applications
  • Driven by 1.5 KW Panasonic Servo Motor
  • Equipped with HBM T20WN/5 Nm torque transducer
  • Equipped with a 6-axis ATI Force/Torque transducer

 

Applications:

  • Performance measurements studies
  • Flow field measurements studies
  • Active flow control studies
  • Passive flow control studies

 

 

                   

             

METUWIND C1

 

Specifications:

  • Small scale suction type wind tunnel
  • Axial fan driven by a 4 kW electric motor
  • Flow conditioning (honeycombs and screens)
  • Plexi-Glass transparent test section

-          0.3m x 0.3m square cross-section

  • 25 m/s maximum velocity, Turbulence Intensity < 0.5%

 

Applications:

  • Hot-wire and multi-hole pressure probe calibration

 

       

METUWIND C2

 

Specifications:

  • Continuous Flow Blower Type Wind Tunnel
  • Radial intake driven by a 18.5 kW electric motor
  • Flow conditioning (honeycombs and screens)
  • Plexi-Glass transparent test sections

-          0.6m x 0.6m square cross section

-          0.6m x 0.3m rectangular cross section

  • 18 m/s maximum velocity, Turbulence Intensity < 1%

 

Applications:

  • Active flow control on rectangular wings
  • Active flow control on turbomachinery cascade test setup
  • Wake measurements of bridge models

                          

                          

METUWIND C3

 

Specifications:

  • Medium scale suction type wind tunnel
  • Axial fan driven by a 45 kW electric motor
  • Flow conditioning (honeycombs and screens)
  • Plexi-Glass transparent test section

-          1m x 1m square cross section

  • 25 m/s maximum velocity, Turbulence Intensity < 1%

 

Applications:

  • Load measurements on 2-D airfoils and bridge models
  • Surface pressure measurements on wing models
  • Constant Temperature Anemometry (CTA) measurements
  • Wake measurements on blades
  • Particle Image Velocimetry Measurements

                            

                            

METUWIND C4

 

Specifications:

  • Open-Jet Wind Tunnel Facility
  • Axial fan driven by 45 kW electric motor
  • Flow conditioning (honeycombs and screens)
  • 1.7m jet exit diameter  
  • 10 m/s maximum velocity, Turbulence Intensity < 2.5%

 

Applications:

  • Model wind turbine testing and measurements
  •  Flow field measurements using Constant Temperature Anemometry (CTA) system
  •  Flow field measurements using Time-Resolved Particle Image Velocimetry ( TR-PIV) system   

               

                

METUWIND C5

METUWIND Large Scale Wind Tunnel

 

Specifications:

  • Closed Loop
  • 54 m x 18 m footprint.
  • Multi-purpose:

-           2.5 m x 2.5 m x 10 m Aeronautical Test Section. Max speed 80 m/s. Tux<0.1%. Contraction Ratio = 7.84:1

-          3 m x 7 m x 20 m Boundary Layer Test Section, Max speed 26 m/s. Tux<2%

-          3 m diameter Open-jet. Max speed 66 m/s. Tux<0.3%. Contraction Ratio = 6.93:1

  • Interchangeable Aeronautical/Open-jet Test Sections
  • Driven by a 6x315 kW axial fan array (Total 1.8 MW, 2 m diameter fans)
  • Steel main structure. Test sections are mainly wood and Plexi-glass situated on steel frames.
  • Large Plenum around the Open-jet test section
  • Multiple honeycombs and screens
  • 750 kW cooling system
  • High precision external balance system
  • Automated Facility Control System
  • 60 m x 20 m x 15 m Hangar with large access doors and a 10 ton overhead crane
  •   3 MW transformer