HYDROLOGY AND FLUID MECHANICS
4.8.1 Wind Tunnel (WT 400)
Owner : Faculty of Engineering and Architecture Suvanabhumi University (RMUTSB) Standard Features : Tunnel Width : 60 cm Tunnel Height : 40 cm Tunnel Length : 100 cm Bell Mouth : Sheet metal Blower : AC/DC motor , adjustable speed. Air Speed Indicator : Propeller type 0.4 - 30 m/s. , digital display. Smoke Generator : Oil Burning type 1 outlet port. Electrical Supply : 380 vac 50 Hz, 3 phase. Materials of Construction : Tunnel : Acrylic sheet or laminated glass up on requested. Tail Pipe : Galvanized sheet metal. Bell Mouth : Sheet metal. Air Distributor : Acrylic sheet or aluminum sheet. Experimental Capabilities : Study of air flow behavior thru / around engineering models. Study of ventilation of architectural models. Lift and drag of aerofoils. Boundary layers. Optional Accessories. 20 tube manometers board 400 mm length. Drag models up on requested. Aero foils up on requested. Pitot static tube. Flutter wing. Boundary layer plate and probe. >= 5 to 50 outlet ports smoke generator.
Two component balance WT300 wind tunnel.	Demonstration of air flow around and thru a building model, using architectural wind tunnel. Owner : Mahasarakam University
Owner : RMUTSB	Owner : RMUTSB
4.8.2 Educational Wind Tunnel-PC Linked Three Component Balance (WT300)
Important Notice : All machine configuration and specification are subjected to change without advance notice for better quality of product. General Description : This equipment is pc linked wind tunnel offers a good route to the study of aerodynamics. Drag and lift force are directly measured by three component balance. Air velocity, air temperature are also read directly and will be shown on computer screen. Results of experiments on various models such as car, aero foil and wing may be calculated and are shown on computer screen using a suitable software & hardware compatible to windows program on pc. Technical Specifications : Dimension : Test Section : 300 mm. X 300 mm x 900 mm. Long.(approx.) Entrance Cone : 1065 mm. square with a 12:1 contraction ratio. Overall Length : 4.4 m. (approx.) Weight : 400 kg. (approx.) Volume : 10 m^3 (approx.) Air Velocity : variable up to 46 m/s no load Materials of Construction : Frame and Support : Mild steel with 4 wheels and 8 locking wheels. Inlet Cone : Galvanized steel sheet. Air diffuser is provided. Tail Pipe : Galvanized steel sheet, smooth inner surface. Painting : Jotun-pengard epoxy painting. Blower : Axial type, high speed, powerful >= 10 HP motor, equipped with frequency inverter 0-60 Hz , fan guard and silencer are provided. Three Component Balance : solid frame type, model supporter is able to rotate 360 degree, forces measured by load cells with A/D converter and software necessary to link with pc, lift :50n; drag 25n as max. Capacity. Pitch moment Lift and drag vs angle of attack Note : Pitch moment as shown above is available only for three component balance. Water Column Manometer : 18 columns inclined manometer +/- 220 mm. Zero point can be seting by positioning of the water supply tank. Sensitivity of the measuring range can be adjusted by varying the inclination of the manometer panel between 0-90 degree. Angle-Feedback Unit : To be mounted on two component balance, for measuring of angle position of models with resolution of 0.1 degree. Anemometer : Hot wire type, maximum air velocity to 20 m/sec. Pitot Tube : S Type, to be provided with an inclined manometer for air speed above 20 m/sec. Power Supply : 380-415 VAC 50 Hz 3 phase 15 amp. Standard Models (to be suplied) : 1 set of fully span width of test section, a NACA 4415 aero foil with variable flap of approximately 180 mm chord. 1 set of fully span width of test section, a NACA 0012 aero foil with approximately 180 mm chord. 1 set of fully span width of test section, a NACA 0015 aero foil pressure wing of approximately 180 mm chord with pressure tapping. NACA 0015 Pressure Wing Data Acquisition System : A suitable software can be used to windows xp/program will be provided so that all necessary information from sensors can be linked and display on computer screen. Smoke Generator : Glycerin-water nontoxic smoke generator, single point. Typical nontoxic type smoke generator Options : 1. Computer and its accessories. 2. Other models are available as requested Limited Warranty : All electronic parts including sensors and software, pc and accessories will be fixed or replaced a new one at manufacture’s expense within six month after date of delivery. Motor of axial fan blower will be fixed or replaced a new one at manufacture’s expense within one year after date of delivery. All steel/ mechanical parts will be fixed or replaced a new one at free of charge within two years after date of delivery. Above warrantee is not valid in case of - Damage caused by natural disaster. - Misuse or failure to follow instruction manual. - This equipment or parts is modified or fixed by customer without agreement from manufacturer. - Any damage caused by shipment or transportation. After Sale Service : Manufacturer will be responsible for maintenance and upgrading of this equipment, providing of other accessories and spare parts necessary to wind tunnel at reasonable price, at least, five year after date of delivery.
Experiment capabilities: Determine lift, and drag of aerodynamic shapes/forms. Study of fluid boundary layer over smooth plate. Flow visualization around and thru aerodynamic shapes and forms.
4.8.3 Small Education Wind Tunnel (WT150)
General Description : This equipment is low speed, open citcuit wind tunnel offers a good route to study of aerodynamic. This machine is competitive price, compact size, and simple to use, light weight, to be installed on provided trolly,so, easy to move. It is acceptable quiet due to smooth running of suction blower and equipped with nonpolluted type smoke generator(commercial name). Therefore, ideal for air conditioned classroom as a basic demonstrating unit for study of aerodynamics. Drag and lift force are directly measured by two component balances. Air speed is measued by calibrated air damper and hot wire anemometer. Air temperature is measured, and angle of attack can be adjusted manually and is indicated by circular angle scale in term of degree. Results of experiments on various model such as car, aerofoil and other geometrical shape may be calculated and are shown on computer screen using a suitable software & hardware compatable to windows program on pc. Technical Specifications : Dimension : 1. Entrance Cone : 480 x 480 m^2 (approx.). 2. Contraction Ratio : 6:1 (approx.). 3. Test Section : 150 x 150 mm^2 x 260 mm. long(approx). 4. Overall Length : 1200 mm(approx.). Overall Dimension and Weight : 570 mm wide x 1200 mm long x 1,400 mm high. 60kg NET; 80kgGROSS. Air Velocity : Variable speed up to 12 m/sec using air damper for air speed adustment. Air Blower : Single unit, centrifugal type, 220 VAC, 1 phase induction motor, 0.5 KW (approx.), equipped with fan guard. Air Velocity Measurement : Digital display in term of m/sec, and calibrated air damper - a special developed technology for WT150. Materials of Construction : 1. Frame and Support : Galvanized steel sheet. 2. Inlet Cone : Same as Test Section 1, air diffuser with safety screen are provided. 3. Tail pipe : Same as Test Section 1, air diffuser with safety screen are provided. Test Section : 1. Should be air tight, side wall made of 5 mm. thick-acrylic sheet. 2. Equipped with >= 5 mm thick-acrylic sheet, swing door 150 mm high x 200 mm wide(approx). 3. To be provided with two component balances, digital display, equipped with angle of attack position indicator in term of degree. Standard Accessories : 1. Two Component Balances : Load cell, digital display, 1 kg force maximum. 2. A set of smoke generator : Single point, clean and nonpolluted type. 3. A set of typical test model, a cedan car, including support system. 4. A computer operating manual. Note: Pc and its accessories are optional. Options : 1. WTO 150-1-Drag model phere. 2. WTO 150-2-Drag model hemisphere. 3. WTO 150-3-Drag model thick plate. 4. WTO 150-4-Drag model square plate. 5. WTO 150-5-Drag model cylinder. 6. WTO 150-6-Drag model aerofoil : NACA 0015. 7. WTO 150-7-Drag model aerofoil : NACA 4415. 8. WTO 150-8-Special models are available upon request. Limited Warranty and After Sale Service : Terms and condition are same as WT300 which are described above. Note : All technical specification and machine configurartion are subjected to changed without advance notice for better quality of product.
4.8.4 Flow Visualization Wind Tunnel (WT-FV 080424)
Note : All technical specification and machine configurartion are subjected to changed without advance notice for better quality of product. General Description : The benchtop unit contains a narrow flow chamber with viewing window in which the drag model is placed. The airflow is generated using a blower. To obtain a flow with low turbulence, the air passes through a settling chamber, a fine sieve and a flow straightener. Smoke is used to make the streamlines visible. The smoke is generated by vaporising a glycol mixture and enters the tunnel via a manifold with a large number of outlet holes. The flow patterns can be clearly seen due to the black background of the flow chamber and additional lighting. Four different models (cylinder, orifice and two wing sections) are supplied. They can be interchanged and have an adjustable angle of attack. Experimental Capabilities Flow diagrams for a real fluid when flowing around bodies Demonstration of turbulent and laminar flow Influence of angle of incidence Flow around a symmetrical and an asymetrical wing Flow around the cylinder, rectangular shape Technical Specifications : Visual range of smoke channel: 250x250mm cross-section: 252x40mm Drag bodies: - rectangular: 60mmX60mm - cylinder: ?60x38 mm - wing, sym.: 15x85x 38 mm - wing, asym.: 14x85x38 mm - wing swivelling range: 180 degree Low pressure radial fan: - max. airflow rate: 480m3/h - max. pressure increase: 300Pa Smoke generator: >=400W power consumption Benchtop unit for visualisation of stream lines around different bodies Illuminated experimental area with transparent panel and black background Wind tunnel with radial fan and smoke generator 4 different models, adjustable angle of incidence Graduated scale indicates angle of incidence of model 230V, 50Hz, 1 phase Dimension and Weight : l x w x h : 1200 x 500 x 490 mm Weight : approx. 50 kg Required Service : 230V, 50Hz, 1 phase Delivery : 1 wind tunnel, 1 smoke generator 4 models 1 notebook computer with accessories 1 instruction manual
4.8.5 Flight Demonstration Wind Tunnel (WT-FD 080424)
Typical flight simulator is equipped for controling of air craft in flight demonstration wind tunnel. Pilot seat is an optional. Note : All technical specification and machine configurartion are subjected to changed without advance notice for better quality of product. General Description : This apparatus is useful for class room demonstrations and students investigation into the behavior of fixed-wing air craft and wing performance during take-off, flight and landing. A model air craft is suspended in the open circuit wind tunnel, and to be supported with linkages that allow it to move vertically and pitch about the quarter chord lenght independtly. The operator files the air craft manually using the control column and throttle which are positioned direct in front of the instrument window and are arranged typically as found in a light air craft. To fly the air craft, the operator pushes the throttle lever forward to increase the tunnel air speed to a certained value, the air craft may be made to take-off by drawing the control column slowly back. A digital display shows air speed in working section, altitude in term of feet, angle of tailplane, lift and drag forch on the aircraft. The air speed change in the wind tunnel simulates the effect of increasing the change of air speed of a real air craft due to a change in thrust from the propeller. The control column is linked to tailplane of the air craft. Pushing the column forward or pulling it back change the angle of the whole tailplane. A scale on the control column indocates the tailplane angle, unlike the real craft, the control column is used only for move up and down the mondel air craft. The direction and quality of air flow over the wing surface may be investigated by application of small tufts which are optional. An adjustable counter weight allows the student to set the center of gravity of the model to different positions from fore to aft of the quarter chord point. To find the lift characteristics of the wing, student can link the air craft to the load cell and vary the angle of attack. Experimental Capabilities To demonstrate behavior during take-off, level flight, and landing. Study the effect of air speed on attitude for level flight and stall. Measurement of the lift curve for the wing up to and beyond stall using provide two component balance and personal computer(pc). Note that pc and its accessories are optional. Dimension and Weight(Approx.) : WxLxH = 500mm x 1500mm x 1300mm Weight: 100 kgsNET, 120kgsGROSS Delivery : A completed set of flight demonstration wind tunnel - Wind tunnel - Flight simulator - Two component balance with RS 232 port and software compatible to Microsoft Windows XP Professional Operating System. Instruction manual
4.8.6 Three Component Balance
Note : All machine and specification are subjected to change without advance notice for better quality of product. General Description : This vertical wall attached- three component balance fits onto the working section of WT300 Wind Tunnel. It may also be used with other subsonic wind tunnels of similar design. Lift, drag and pitching moment exerted on the model will be measured and display digitally in term of Newton and Newtonโ€“ m respectively. A triangular force plate is hinged by mechanism that attached to the square based plate , allow the triangular plate to move a little bit freely in plane parallel to the based plate and can be freely rotated about horizontal exist. The forces acting on the model attached to the balance are transmitted by signal cables to three strain gauged load cells to a/d converter and provided soft ware so that they are able to display digitally on both local control panel and computer screen using RS232 port. With provided software, collecting and calculation of the lift, drag , pitch moment and corresponding lift and drag coefficients can be easily done. Specification : Dimensions(approx.): - Balance (on frame): width 500 mm x depth 350 mm x height 500 mm -Display module(approx.): width 250 mm x thickness 125 mm x length 450 mm -Packed for export: 0.5 m3 Nett weights(approx.): -Balance on calibration frame: 16 kg -Display module: 5 kg -Packed for export: 50 kg Capacity(max.): -Lift 50 N -Drag 25 N -Pitching moment 2.5 Nm Models: -Maximum weight of model not more than 2 kgs. -Models will need a 12 mmID x 100 mm mounting stem. Required Service : Electrical supply: Input 220 VAC, 50 Hz. Operating Conditions : Operating environment: Well ventilated laboratory environment Storage temperature range: 0°C to +50°C (when packed for transport) Operating temperature range: +10°C to + 35°C Operating relative humidity range: 80% at temperatures < 31°C.
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