WIND TUNNEL

SUBSONIC WIND TUNNEL
SUBSONIC WIND TUNNEL
 

 

 

1. WIND TUNNEL ( 600 X 600 MM )                  

Specifications :

 

Working Test Section  : 600 x 600 mm

Area Size                  : Square at test section.

Contraction Ratio            : 9

Overall Length                : 36 6

Air Velocity Range          : 3 - 30 mtrs/sec

Flow generation               : 15 HP 1550 RPM.

       D.C. Motor          : Open Circuit slow speed subsonic Wind Tunnel.


  DESCRIPTION :

Wind Tunnels are designed to perform the different types of experiments in Fluid Dynamics, Aerodynamics, model studies & for industrial Design Aspects.

The present Wind Tunnel is configured in five parts mainly, inlet or Honeycomb 
section with graded screens at different intervals, jet or convergent section, Main 
Test Section Unit, Diffuser or Divergent Cone, Fan with Motor.

The Tunnel is open Circuit type having a square test section of 600 x 600 mm. 
It has a contraction ratio of 9 & honeycomb & screens at inlet. The maximum 
speed in this section with a 15 HP electric motor drive is about 30 mtrs/sec. 
Smooth & continues variations of speed are provided over a wide range by 
means of aerodynamic speed control ( Flap ) mechanism combined with variable speed drive of the electric motor. A fixed pitch 4 bladed metal/wooden fan 
coupled to the electric motor by suitable couplings derives the tunnel. The entire 
tunnel expects the motor support structure is wooden construction. Large Plexiglas
windows provided on both sides of test section permit easy accessibility for model
mounting etc. Necessary static pressure connections for measurement of Tunnel 
speed have been provided

 

 

2. WIND TUNNEL ( 300 X 300 MM )                  

Specifications :

 

Working Test Section : 300 x 300 mm

Area Size                       : Square at test section.

Contraction Ratio                  : 9

Overall Length           : 29 6

Air Velocity Range                : 3 - 30 mtrs/sec

Flow generation                    : By Axial Flow Fan.

D.C. Motor         : Open Circuit slow speed subsonic Wind Tunnel.

          7.5 H.P., 1550 RPM.

 

DESCRIPTION :

Wind Tunnels are designed to perform the different types of experiments in Fluid Dynamics, Aerodynamics, model studies & for industrial Design Aspects.

The present Wind Tunnel is configured in five parts mainly, inlet or Honeycomb 
section with graded screens at different intervals, jet or convergent section, Main 
Test Section Unit, Diffuser or Divergent Cone, Fan with Motor.

The Tunnel is open Circuit type having a square test section of 300 x 300 mm. It has 
a contraction ratio of 9 & honeycomb & screens at inlet. The maximum speed in this 
section with a 7.5 HP electric motor drive is about 30 mtrs/sec. Smooth & continuous 
variations of speed are provided over a wide range by means of aerodynamic speed 
control ( Flap ) mechanism combined with variable speed drive of the electric motor. 
A fixed pitch 4 bladed metal/wooden fan coupled to the electric motor by suitable 
couplings derives the tunnel. The entire tunnel expect the motor support structure is 
wooden construction. Large Plexiglas windows provided on both sides of test section 
permit easy accessibility for model mounting etc. Necessary static pressure 
connections for measurement of Tunnel speed have been provided
 

3. WIND TUNNEL ( 450 X 450 MM )                  

Specifications :

 

Working Test Section : 450 x 450 mm

Area Size                       : Square at test section.

Contraction Ratio                  : 9

Overall Length           : 32.

Air Velocity Range               : 3 - 30 mtrs/sec

Flow generation                   : By axial Flow Fan

       D.C. Motor                         : Open Circuit slow speed subsonic Wind Tunnel.

         10 HP.


DESCRIPTION :

Wind Tunnels are designed to perform the different types of experiments in Fluid Dynamics, Aerodynamics, model studies & for industrial Design Aspects.

The present Wind Tunnel is configured in five parts mainly, inlet or Honeycomb section with graded screens at different intervals, jet or convergent section, Main Test Section Unit, Diffuser or Divergent Cone, Fan with Motor.

The Tunnel is open Circuit type having a square test section of 450 x 450 mm. It has a contraction ratio of 9 & honeycomb & screens at inlet. The maximum speed in this section with a 10 HP electric motor drive is about 30 mtrs/sec. Smooth & continuous variations of speed are provided over a wide range by means of aerodynamic speed control ( Flap ) mechanism combined with variable speed drive of the electric motor. A fixed pitch 4 bladed metal/wooden fan coupled to the electric motor by suitable couplings derives the tunnel. The entire tunnel expects the motor support structure is wooden construction. Large Plexiglas windows provided on both sides of test section permit easy accessibility for model mounting etc. Necessary static pressure connections for measurement of Tunnel speed have been provided

 
ESSENTIAL ACCESSORIES AT EXTRA COST

 

a. MULTI COLUMN INCLINED TUBE MANOMETER

 

     A 25 column Unclined Tube manometer with engraved scale is fitted 
on wooden board & has tilling facility with digree of inclination scale.

b. DIGITAL ANEMOMETER ( Air Velocity Meter )     

Applications : Ventilation, Fluctuations in wind velocity monitoring & recording, checking wind loads on structures & building. Air velocity meter is a portable battery/A.C. Mains 230 V operated of range 0.30 mtrs/sec to 50 mtrs/sec 
( calibrated ) is descend to measure the wind & air velocity

Specifications :

Measuring Range               : 0 - 30 mtrs/sec.
Zero Control                     : A single control to set zero under zero flow conditions.
Measuring Accuracy        : 2%

c. SMOKE GENERATOR          

The smoke generator system compresses a smoke prod, tank with electrical heater, feed valve, feed air valve, outlet smoke valve, oil level indicator & a drain valve is provided to smoke generator. The dense white smoke with sharp distinct boundaries is generated & maintained for flow visualization studies around models.

d. STRAIN GAUGE BALANCE

 
Precision Two component balance for foot mounting/side will mounted system 
for Wind Tunnel studies, Lift forces @ 25 Kg, Drag Forces @ 2 Kg. it measures 
optional pitch force component also can be provided. Individual force output 
legs are terminated through multipoint connectors to provide easy handling. 
Overall accuracy & repeatability of the system is better than 0.5%.

e. MULTI COMPETENT DIGITAL FORCE INDICATOR.   

Instrument comprises to independent calibration digital display unit to display 
force directly using two component strain gauge balance. This instrument 
comprises D.C. excitation supply for system to process & compute force 
signals derives strain gauges balance. Instruments operated in 230 V., 50 
Cycles A.C. Mains, optional additional force component comactible for 
three component balance.

f. PRECISION VERNIER HEIGHT GAUGE  ( With Pitot Tube ).

 

A precision venire height gauge or 0.1 mm lease count with strand & a fine 
hole pitot tube is provided. This instrument uses for study of boundary larger 
& to find coefficient of tag on smooth & rough surfaces.

g. DEPTH MICROMETER ( With Pitot Tube )       

A highly precision depth micrometer of 0.01 mm least counts with its stand & a 
fine note pitot tube is provided. This instrument uses for study of boundary larger 
& to find coefficient of drag on smooth & rough surfaces.

           h. PROJECTION MANOMETER                  

 

            i.        HOT-WIRE ANEMOMETER                                                         

 

a. Constant Temperature & Constant Current Hot-wire Anemometer with 3.5 digit display.

b. Essential Accessories to use with hot-wire Anemometer :

1. General Purpose Hot wire Probe 2 Wedge Probe.
2. Hot-wire X Probe ( 2 Sensor In Perpendicular )
3. Zero Suppressor 5 Square Wave Generators.
4. Low Pass & High Pass Filter.
5. Spool Holding Stand to use with welding generator.
6. Microwelding Power Generator to facilitate Welding of wires to Probe 
            using Spool Holding Stand.
7. Digital RMS Voltmeter provided with 3.5 digit display resolutions of 
           
0.5% FSD.
8. Digital Lineraiser provided with 3.5 digit display resolution of
           
0.5% FSD.

MODELS & EXPERIMENTATION ON OPEN CIRCUIT SLOW SPEED TUNNEL

NOTE :Following price lost is same for all three types of Tunnels i.e 600 x 600 x 600 mm, 450 x 450 x 450 mm, 300 x 300 x 300 mm.

 

I. AREOFOIL WOODEN MODEL      

 

An Aerofoil wooden model made from seasoned teak wood & with 23 piezometric tappings for pressure distribution studies. Model shape/boundaries are close to NASA specifications ( National Aeronautics & Space Administration ).

EXPERIMENTS :
1. To study & plot the graph of pressure distribution around & areofoil at different
   angle of attacks.
2. Testing of Aerofoils i.e To find lift & drag forces over an Areofoil.
3. Study & observation of Boundary Layer separation over Aerofoil.
4. Study & observation of Laminar Flow, Transitent Flow & Turbulent Flow.
5. Study & observation of Flow pattern over an Areofoil.

II. WIND TUNNEL AREO MODEL    

Basic Aero Model which is geometrical simmertry with 23 piezometer tappings for studies of flow pattern around made from seasoned teak wood to provide high stability, reliability & long usage, which is a demonstration model.

EXPERIMENTS :
1. Study & observations of flow pattern over geometrical simmetry model.
2. Stalling of an Areofoil.
3. Comparison of vortices over thin & thick Areofoil model different angle of attacks.

III. CIRCULAR CYLINDER

A hollow Circular Cylinder of wooden provided with 23 piezometer tappings to 
find pressure distribution around it.

EXPERIMENTS  :
1. Study of shedding of alternate vortices i.e. Von Karman Vortex Street.
2. Study & observation of flow pattern over circular cylinder.
3. To study & plot the graph of Pressure Distribution Around Circular Cylinder.

IV. SMOOTH & ROUGH SURFACE PLATES                   

 

A smooth Gunmetal plate, a slightly rough surface plate & a highly rough plate of 5 mm. thickness provided to conduct the following experiments.

EXPERIMENTS :
1. Study & measurement of Boundary Layer thickness over smooth surface &
    rough surface
2. To find the co-efficient of drag over smooth surface & rough surface
3. Effect of increasing Reynolds Number on boundary layer flow.

V. ROTATING CIRCULAR CYLINDER           

This is a hollow copper cylinder driven at various speeds by D.C. Motor. The speed can be vary by electrical dimmerstat.

EXPERIMENTS :
1. Study & observation of Flow pattern over rotating cylinder.
    i. Clockwise effect.
   ii. Anti Clockwise effect.

VI. A BLUFF BODY
A rectangular Bluff body made from seasoned teak wood provided with 23 piezometers tappings for pressure distribution.

EXPERIMENTS :
1. To study & plot the graph of pressure distribution over bluff body.  
2. To study & observe the flow pattern over bluff body.
3. To find the coefficient of drag/resistance over as bluff body.

VII. MODEL OF BRIDGE PIER
A model of bridge pier from seasoned teak wood provided with 23
 pressure/peizometric tappings.

EXPERIMENTS :
1. Study & observations of flow pattern over a bridge pier.  
2. To study & plot the graph of pressure distribution over a bridge pier.

VIII. MODEL OF SUDDEN ENLARGEMENT PIECE.                   

A model of sudden Enlargement piece made from transparent perpex sheet provided with 23 piezometric/pressure tappings for measurement of pressure distribution & for energy gradiation line.

EXPERIMENTS :
1. To study & plot the graph of pressure distribution/drop & energy gradiation
    line of the flow through sudden enlargement.
2. Study & observation of flow pattern through sudden enlargement portion &
   formation of wake/vortices

IX. MODEL OF SUDDEN CONTRACTION PRICE     

 

A model of sudden contraction piece made of Transparent Perpex Sheet & provided with 23 numbers pressure tappings.

EXPERIMENTS :
1. To study & plot the graph of pressure distribution drop & energy gradiation line
    of the flow through sudden contraction portion.
2. To study & observation of flow pattern through sudden contraction portion.

X. ORIFICEMETER.                   

An orificemeter of circular shape made from transparent perpex sheet provided with Three tappings to Tunnel for measurement of flow.

EXPERIMENTS :
1. To find coefficient of discharge of an orificemeter.
2. To find the discharge of Vena of contraction from Orificemeter.
3. Study & Observation of flow pattern through an Orificemeter.

XI. VENTUREMETER
Venturemeter made from perpex sheet provided with 23 numbers piezometeric/
 pressure tappings.

EXPERIMENTS :
1. To study & plot the graph of energy gradiation line.
2. Study & observation of flow pattern through Venturimeter.

XII. NOZZLEMETER.                   

       Nozzlemeter made from perpex sheet provided with 23 piezometric/pressure tappings.

EXPERIMENTS :
1. To study & plot the graph of energy gradiation line.
2. Study & observation of flow pattern through meter.

XIII. MODEL OF SPHERE                  

Model of sphere made from seasoned teak wood provided with 23 piezometeric/pressure tappings & sphere trip wire.

EXPERIMENTS :
1. Study & observe of flow pattern over a sphere with trip wire.  
2. Study & observe of flow pattern over sphere without trip wire.  

XIV. CHIMMEY.            

A metallic chimney provided with sufficient height & diameter. It is tapped from top 
to bottom.

EXPERIMENTS :
1. Study & mixing of smoke with air at different heights & different wind velocities.
2. Study & calculate the wind load on chimney.

 

XV. MODEL OF SHIP
A model of ship of provided with 23 pressure/ piezometeric tappings made from
seasoned Teak wood.

EXPERIMENTS :
1. To study & plot the graph of pressure distridution over model of ship.
2. Study & observation of woke formation at the trailing side of ship.

XVI. MODEL OF SUBMARINE

A model of submarine from seasoned Teak wood is provided with 23 pressuretappings for the measurement of pressure distribution.

EXPERIMENTS :
1. To study & plot the graph of pressure distribution around the model of submarine.
2. Study & calculate the drag on submarine.

XVII. MODEL OF COOLING TOWER.

Model of cooling tower in two spaces square & circular made from seasoned teak wood & provided with 23 piezometeric/pressure tappings.

EXPERIMENTS :
1. Study & calculate the wind load on cooling towers.
2. Study & formation of wakes over cooling towers.

XVIII. MODEL OF AUTOMOBILE CAR

A model of Automobile car made from metallic sheet/wood. Provided with 23 piezometric/pressure tappings for measurement of pressure distribution.

EXPERIMENTS :
1. To study & calculate the wind resistare ( Co-efficient of drag ) over automobile
    model.
2. To study & plot the graph of pressure distribution over an automobile model
3. Study & observe of flow pattern over an automobile model.

XIX. MODEL OF WIND MILL.

A model of wind mill made from metal three blades & provided with remote RPM indicator.

EXPERIMENTS :
1. Effects of shapes of blades on Wind Mill speed.
2. Effect of wind speed on revolution of Wind Mill & load on Wind Mill.

XX. AEROFOIL MODEL WITH AIR INJECTION FACILITY & AIR SUCTION
FACILITY

The areofoil model made teak wood is provided with air injection holes & 23
piezometric tappings.
For injection compressor is necessary small capacity.
EQUIPMENT : Air Compressor 100 ltr Tank Capacity & Pressure 7 Kg/Cm2.

EXPERIMENTS :
1. Study & observation of energisation of retarded boundary layer by injection of air
    from compressor.

Note : For the above Aerofoil model of vaccum pump used for suction of air then it performs one more experiment.  

EQUIPMENT :
Vaccum Pump
Capacity 760 mm of Hg

EXPERIMENTS :
2. Study & observation of Retarded Boundary Layer Suction slot with help of vaccum
    pump.

XXI. MODEL OF BOMB
A model of Bomb from seasoned teak wood provided with 23 piezometric tappings
for pressure sensing.

EXPERIMENTS :
1. To study & plot the graph of pressure distribution over the model of bomb.
2. Find the co-efficient of drug of drag for bomb ( particular shape )

XXII. MODEL OF ROCKET
A combination of wooden & M.S. material construction this recoket provides 23
piezometric tappings for pressure sensing.

EXPERIMENTS :
1. To study & plot the graph of pressure distribution over the model of Rocket.
2. Find the coefficient of drag for rocket ( particular shape )

XXIII. AREOFOIL MODEL WITH FLAP

An Areofoil model provided with Flap. The all metallic model can be mounted vertical struct provided to Tunnel/ along with model.

EXPERIMENTS :

1. Effect of Spoiler/Flap raised on Lift & Darg.
2. Study & observation of flow pattern over a spoiler flap raised.

XXIV.AREOFOIL MODEL WITH AILERONS.  

An areofoil model provide with ailerons having aileron tilting facility. The ailerons are provided at leading trailing edge.

EXPERIMENTS :
1.
Effect of ailerons on Lift & Drag over & Aeroplane at different angle of attack
2. Observation of flow pattern with ailerons.

XXV. MODEL OF WING & TAIL PIECE

These are two models made from seasoned teak wood provide with 23 pressure tappings each.

EXPERIMENTS :
1. Effect of down wash on tail piece.
2. To study & plot graph the pressure distribution over a wing & tail piece at different
    angle of attack.
3. Study & observation of flow pattern over a wing & piece at different angle of
   attack.

XXVI. MODEL OF AREOFOIL WITH SLOT
A model of areofoil with slot made of seasoned teak wood provided with pressure
tappings for slot & also for main wing.

EXPERIMENTS :
1. Effect of suction slot on Lift & Drag over an areofoil 
2. Study & observation of flow pattern over an areofoil provided with slot at
    different air velocity & different angle of attack.
3. To study & plot the graph of pressure distribution over an areofoil when slot is
   open & closed.

XXVII. MODEL OF BUILDING.                

Model of Building made from all metallic parts & is provided with 23 pressure tappings.

EXPERIMENTS :
1. Effect of wind load on building structure for different air velocities.

NOTE :
*  For pressure distribution, Muiti column, Inclined Tube Monmeter is
    necessary
*  For flow pattern observation Smoke Generation is necessary.
*  For Cu & Cd & Drag forces Multi component Strain Gauge Balance &
    Forces Indicator is necessary.
*  For Velocity measurement of air Digital Anemometer is necessary.
*
  For study of Boundary Layer Thickness Venire Depth Height Gauge of
    Micrometer with Pitot tube is necessary.