Wind Tunnel IND Lab Equipments 1

IND-LAB EQUIPMENTS® PVT. LTD.

COMPUTERIZED LOW SPEED WIND TUNNEL (SUB SONIC) MODEL .NO : CAEL-1 DESCRIPTION TYPE OF TUNNEL : Low Speed, Open Circuit, Suction Type

TEST SECTION SIZE : 300 mm 300 mm 600 mm, Acrylic Windows

The central portion of the tunnel is the test section sandwiched between the inlet duct (effuse) and the diffuser using flange. It has 300mm 300mm cross section (inside) and 600mm length. Fixed with transparent window on either side which facilitates fixing and viewing of the models. This houses smoke chest fixing points. The traversing mechanism is fixed on its top of the movement of total pressure probe. The holes are provided for holding the models for different studies and for taping out the pressure probes.

VELOCITY : Up to 70 m/sec. DRIVE : Axial Flow Fan driven by 10 HP A.C motor

(Kirloskar) with A.C Drive (L.S. make) for speed control.

HONEY COMB SECTTION: 900 sq, 30mm square wood sections arranged in

the frame with mesh screen of SS at front end. Triangular section of 990 sq of MS angle and sheet.

EFFUSER (INLET DUCT) : Inlet dimension of 900 mm 900 mm Contoured to 300 mm 300 mm. FRP MATERIAL (6mm thick) It is aerodynamically contoured section with contraction area ratio 9:1. The inlet starts with dimension of 900mm 900mm contoured to 300mm 300mm. The axial and lateral turbulence


are reduced and smooth flow of air entering the section is achieved by installing the Honey-combs and screens, for most effectiveness of the air inlet. The ratio of length to cell size of the honey-comb is maintained as per the recommended standards. The wire mesh is also fixed to smoothen the flow, further. The screen is made removable for possible cleaning. The duct is secured to the test section by flange. The provision is also made for easy removal of effuse and diffuser for possible separation from the test section when required. It is also highly smoothened and painted.

DIFFUSER : Inlet dimension of 300 mm 300 mm

to 600 mm dia FRP MATERIAL (6mm thick) The down stream portion of the tunnel is the diffuser. To the end of this is attached an axial flow fan. The diffuser starts with 600mm, round at the fan driven end. It is flanged and bolted to the test section.

TUNNEL BALANCE : 3 Components. Consists of 3 load cells of 10Kg arranged in a manner to obtain 3 component. Digital display meters (3 Nos.).

ANGLE OF INCIDENCE : To change the angle of attack for the models. CHANGING MECHANISM VELOCITY MEASUREMENT: Pitot tube with traversing unit and digital indicator.

SMOKE GENARATOR : To visualize the pattern of the flow over the

Different models at low speeds (0-4 m/s). Consists Borosil glass of 2 Ltr. capacity for smoke collection, ½’ ltr capacity glass jar for excess smoke collection. 3 way glass jar for smoke generator with ½ ltr capacity. Heater of 400 w capacity with 2A dimmer with 24V transformer, ½


Ltr capacity cylindrical jar adjustable height to maintain liquid level. Parafin liquid of 1 Ltr.

TRAVERSING UNIT (for pitot movement) : The traverse unit can be operated up and down the

test section. It should show zero reading when the pitot tube head probe is in bottom most position of the test section. Otherwise adjust the pointer. Rack and pinion system with scales in cm.

PITOT TUBE : Brass, outside pipe OD 6mm, ID 3mm, Copper .Inside pipe OD 5mm, ID 1.6mm.

INK TANK : ½ Ltr capacity, SS with provision for movement.

ALL THESE ARE MOUNTED ON STURDY FRAME MADE OF M.S. ANGLE of 40mm 40mm 6mm AND CHANNEL of 75mm 6mm.

CONTROL PANEL MOUNTINGS MULTI BANK MANOMETER : 13 Groove to measure the pressure

(Acrylic Material) distribution over the model. (U tube for static) Length: 400mm, width: 12mm, height-1000mm with provision for +60º angle changing system.

This is used for studying pressure distribution across various models. Viz., Aerofoil, cylinder, special purpose shapes. It contains 13 Nos. of tubes mounted on board with adjustable inclination. Bottom of all tubes are interconnected and inturn to the balancing reservoir filled with coloured water. While the last tube is left open to atmosphere for reference, all other 12 tubes are connected at their top to pipe / tube bundles of the model. The required model is held in the test section between holes provided front and back side Perspex windows. The required degree of


angle of inclination can be given to the tube bundle and the angle measured with respect to the horizontal.

DIGITAL VELOCITY INDICATOR: To measure the air velocity in the duct.

DIGITAL FORCE INDICATORS : To measure Lift, Drag and Side forces

Digital pressure scanners with 16 pressure sensors.

CONTROL PANEL WILL BE FABRICATED USING NOVAPAN WOODEN

SHEETS AND M.S SQUARE TUBE. Length: 1200mm, Width: 600mm and Height: 1300mm.

LAB VIEW BASED SOFTWARE. ACCESSORIES MODELS FOR PRESSURE DISTRBUTION STUDIES

NACA-0015

1. Symmetrical Aerofoil Model 2. Un Symmetrical Aerofoil Model 3. Cylindrical Model Pressure tapping pipe of SS material ID 3mm. 1m length approximate. Plastic tube ID 3mm, 1.5m length. 5mm brass hose nipple fitted to the multi bank manometer (top).

MODELS FOR FORCE STUDIES

1. Symmetrical Aerofoil Model 2. Un Symmetrical Aerofoil Model 3. Spherical Model 4. Hemispherical Model 5. Circular Disc Model Angle changing system consists of tapered 90mm 50mm 1.6mm thick SS sheet OD 55mm half round link system with 8mm dia. Outside pipe of ½”.

BLUFF MODELS FOR AIR FLOW VISUALIZATION (Smoke)


1. Automobile Models 2. Wedge Model 3. Flat Plate Model

WOOD BOX TO PLACE ALL THE ABOVE MODELS

SERVICE REQUIRED: 3ph, 440 Volts, A.C.

EXPERIMENTAL CAPABILITIES Measurement of Lift force, drag force and side force using wind tunnel balance. Study of Pressure Distribution over symmetrical aerofoil, Unsymmetrical aerofoil. Study of Pressure Distribution over smooth and rough cylinder. Flow visualization studies over cylinder. Flow visualization studies over aerofoil with different angles of incidence. Flow visualization studies over a flat plate at different angles of incidence. Reynolds Number in Tunnels cross section. Computerization for the following meters (with sensor):

(1) Digital velocity indicator. (2) Digital pressure indicator: consists of 16 pressure sensors and 2 scanners. (3) Digital force indicators: 3 Nos. for lift, drag and side forces. (4) RS485: Interfacing unit.

Following parameters are computerized: All 16 pressure readings are fed to computer using multi channel scanner at different

angle of attack of aerofoil. Following Graphs can be plotted:

Pressure distribution Vs chord length (1 graph). Forces Vs. Angle of incidence (3 graphs) Forces Vs. Velocity (1 graph).

All the coefficients, Reynolds’s number are calculated and tabulated in separate sheet. Provision to log the data at any point of time (by selecting manually, the data to be

logged). Entire set of readings will be saved to Excel sheet for any further studies. Study on bluff bodies and corresponding coefficient results also can be obtained. Test can be conducted on “Pressure study” or “Force Study” for various models.

NOTE: Only results are computerized. All the operations are manual. Computer hardware are not in the scope of offer. Smoke visualization by naked eyes only.


COMPUTERIZED LOW SPEED WIND TUNNEL (SUB SONIC) MODEL .NO : CAEL-2 DESCRIPTION TYPE OF TUNNEL : Low Speed, Open Circuit, Suction Type

TEST SECTION SIZE : 600 mm 600 mm 2000 mm, Acrylic Windows

The central portion of the tunnel is the test section sandwiched between the inlet duct (effuser) and the diffuser using flange. It has 600mm 600mm cross section (inside) and 2000mm length. Fixed with transparent window on either side , which facilitates fixing and viewing of the models. This houses smoke chest fixing points. The traversing mechanism is fixed on its top of the movement of total pressure probe. The holes are provided for holding the models for different studies and for taping out the pressure probes.

VELOCITY : Up to 40 m/sec. DRIVE : Axial Flow Fan driven by 20 HP A.C motor

(Kirloskar) with A.C Drive (L.S. make) for speed control.

HONEY COMB SECTTION: 1800 sq, 30mm square wood sections arranged in

the frame with mesh screen of SS at front end. Triangular section of 1800 sq of MS angle and sheet.

EFFUSER (INLET DUCT) : Inlet dimension of 1800 mm 1800 mm Contoured to 600 mm 600 mm. FRP MATERIAL (6mm thick) It is aerodynamically contoured section with contraction area ratio 9:1. The inlet starts with


dimension of 1800mm 1800mm contoured to 600mm 600mm. The axial and lateral turbulence are reduced and smooth flow of air entering the section is achieved by installing the Honey-combs and screens, for most effectiveness of the air inlet. The ratio of length to cell size of the honey-comb is maintained as per the recommended standards. The wire mesh is also fixed to smoothen the flow, further. The screen is made removable for possible cleaning. The duct is secured to the test section by flange. The provision is also made for easy removal of effuse and diffuser for possible separation from the test section when required. It is also highly smoothened and painted.

DIFFUSER : Inlet dimension of 600 mm 600 mm

to 1200 mm dia FRP MATERIAL (6mm thick) The downstream portion of the tunnel is the diffuser. To the end of this is attached an axial flow fan. The diffuser starts with 600mm, round at the fan driven end. It is flanged and bolted to the test section.

TUNNEL BALANCE : 3 Components. Consists of 3 load cells of 10Kg arranged in a manner to obtain 3 component with Digital display meters (3 Nos.).

ANGLE OF INCIDENCE : To change the angle of attack for the models. CHANGING MECHANISM VELOCITY MEASUREMENT: Pitot tube with traversing unit and digital indicator.

SMOKE GENARATOR : To visualize the pattern of the flow over the

Different models at low speeds (0-4 m/s). Consists Borosil glass of 2 Ltr. capacity for smoke collection, ½’ ltr capacity glass jar for excess smoke collection. 3 way glass jar for smoke


generator of ½ ltr capacity .Heater of 400 w capacity with 2A dimmer and 24V transformer, ½ Ltr capacity cylindrical jar with adjustable height to maintain liquid level. Parafin liquid of 1 Ltr.

TRAVERSING UNIT (for pitot movement) : The traverse unit can be operated up and down the

test section. It should show zero reading when the pitot tube head probe is in bottom most position of the test section. Otherwise adjust the pointer). Rack and pinion system with scales in cm.

PITOT TUBE : Brass, outside pipe OD 6mm, ID 3mm, Copper Inside pipe OD 5mm, ID 1.6mm.

INK TANK : ½ Ltr capacity, SS with provision for movement.

ALL THESE ARE MOUNTED ON STURDY FRAME MADE OF M.S. ANGLE of 60mm x 60mm x 6mm AND CHANNEL of 100mm x 50mm x 6mm.

CONTROL PANEL MOUNTINGS MULTI BANK MANOMETER : 13 Groove to measure the pressure

(Acrylic Material) distribution over the model. (U tube for static) Length: 400mm, width: 12mm, height-1000mm with provision for +60º angle changing system.

This is used for studying pressure distribution across various models.It contains 13 Nos. of tubes mounted on board with adjustable inclination. Bottom of all tubes are interconnected and inturn to the balancing reservoir filled with coloured water. While the last tube is left open to atmosphere for reference, all other 12 tubes are connected at their top to pipe / tube bundles of the model. The required model is held in the test section between holes provided front and back side Perspex windows. The required degree of


angle of inclination can be given to the tube bundle and the angle measured with respect to the horizontal.

DIGITAL VELOCITY INDICATOR: To measure the air velocity in the duct.

DIGITAL FORCE INDICATORS : To measure Lift, Drag and Side forces

Digital pressure scanners with 16 pressure sensors.

CONTROL PANEL WILL BE FABRICATED USING NOVAPAN WOODEN

SHEETS AND M.S SQUARE TUBE. Length: 1200mm, Width: 600mm and Height: 1300mm.

LAB VIEW BASED SOFTWARE. ACCESSORIES MODELS FOR PRESSURE DISTRBUTION STUDIES

NACA-0015

1. Symmetrical Aerofoil Model 2. Un Symmetrical Aerofoil Model 3. Cylindrical Model Pressure tapping pipe of SS material ID 3mm. 1m length approximate. Plastic tube ID 3mm, 1.5m length. 5mm brass hose nipple fitted to the multi bank manometer (top).

MODELS FOR FORCE STUDIES

1. Symmetrical Aerofoil Model 2. Un Symmetrical Aerofoil Model 3. Spherical Model 4. Hemispherical Model 5. Circular Disc Model Angle changing system consists of tapered 90mm 50mm 1.6mm thick SS sheet, OD 55mm half round link system with 8mm dia. Outside pipe of ½” M.S.

BLUFF MODELS FOR AIR FLOW VISUALIZATION (Smoke)


1. Automobile Models 2. Wedge Model 3. Flat Plate Model

WOOD BOX TO PLACE ALL THE ABOVE MODELS

SERVICE REQUIRED: 3ph, 440 Volts, A.C. EXPERIMENTAL CAPABILITIES Measurement of Lift force, drag force and side force using wind tunnel balance. Study of Pressure Distribution over symmetrical aerofoil, Unsymmetrical aerofoil. Study of Pressure Distribution over smooth and rough cylinder. Flow visualization studies over cylinder. Flow visualization studies over aerofoil with different angles of incidence. Flow visualization studies over a flat plate at different angles of incidence. Reynolds Number in Tunnels cross section.

Computerization for the following meters (with sensor): (5) Digital velocity indicator. (6) Digital pressure indicator: consists of 16 pressure sensors and 2 scanners. (7) Digital force indicators: 3 Nos. for lift, drag and side forces. (8) RS485: Interfacing unit.

Following parameters are computerized: All 16 pressure readings are fed to computer using multi channel scanner at different

angle of attack of aerofoil. Following Graphs can be plotted:

Pressure distribution Vs chord length (1 graph). Forces Vs. Angle of incidence (3 graphs) Forces Vs. Velocity (1 graph).

All the coefficients, Reynolds’s number are calculated and tabulated in separate sheet. Provision to log the data at any point of time (by selecting manually, the data to be

logged). Entire set of readings will be saved to Excel sheet for any further studies. Study on bluff bodies and corresponding coefficient results also can be obtained. Test can be conducted on “Pressure study” or “Force Study” for various models.

NOTE: Only results are computerized. All the operations are manual. Computer hardware are not in the scope of offer. Smoke visualization by naked eyes only.

Wind Tunnel IND Lab Equipments 1

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