Blow Down Wind Tunnels
Description of Blow Down Wind Tunnels
Blow Down Wind Tunnels are a special type of Open Circuit wind tunnel. For most Open Circuit tunnels, fan assemblies are located downstream of the test section and air is drawn through the wind tunnel with suction. For Blow Down Wind Tunnels, however, air is blown down into the wind tunnel by a fan located upstream of the test section, as the name implies. Compared to standard Open Circuit wind tunnel configuration, blow-down style tunnels provide an extra degree of testing flexibility. Most commonly, these tunnels are used for tests requiring liquid or particulate injection. Because all tunnels are made to fit the customers needs, there is no limitation to the options available. All blow-down style tunnels have custom test sections, and many are requested to include built-in test article mounting arrangements.
Specifications of Blow Down Wind Tunnels
Closed Circuit Wind Tunnels
Description of Closed Circuit Wind Tunnels
The use of steel for construction offers complete design freedom to meet your unique specifications and needs, such as low overhead clearance or building support columns. Most Closed Circuit Wind Tunnels designs are traditional single-return, horizontally arranged circuits. However, any configuration is possible. As with all wind tunnels, exceptionally steady test section flow with close uniformity of velocity is standard. Turbulence level is typically below 0.10 percent throughout the full tunnel speed range.
Specifications of Closed Circuit Wind Tunnels
Since 1990, we are an authentic Computer Controlled Subsonic Wind Tunnel manufacturer, supplier and exporter in West-Delhi (India). It is engineered & developed in conformity with the international standards of quality. Used in several industrial sectors for many uses, this Computer Controlled Subsonic Wind Tunnel is completely inspected prior to make its delivery to clients to provide utmost satisfaction them.
Our company is a renowned Multi Purpose Teaching Flume manufacturer, exporter and supplier at West-Delhi (India). Engineered and developed huge innovation & perfection, this flume is ideally utilized for measuring the velocity of flow. Available in different technical specifications, this Multi Purpose Teaching Flume features outstanding performance, low energy consumption, longer service life, sturdy design and cost-effectiveness.
The is a compact open channel flume that is available in 2.5 m or 5.0 m lengths, with clean acrylic sides to the working part for complete visibility of the flow. The channel is equipped with a PVC inlet tank, and is developed for free discharge into the Hydraulics Bench. The offered flume is mounted on a hard framework, and can be tilted by utilize of a calibrated screw jack that allows exact slope adjustment of the channel.
The inlet tank includes a stilling arrangement to spread the water flow out before to entry into the channel for ensuring smooth uniform flow. The level in the working part of the flume is controlled utilizing an overshot weir at the discharge end.
Bed pressure tappings & fixing points for models are provided. A longitudinal scale set at the top of the channel allows depth gauges & Pitot-static tubes to be precisely located along the channel length.
A set of gauges & models are given with the flume as section of the standard supply, comprising:
In the Orifice and Free Jet Flow accessory a constant head tank is fed with water from the Hydraulics Bench. The orifice is set at the base of the tank through a special wall fitting that provides a flush inside surface.
The head is maintained at a constant value by an adjustable overflow and is indicated by a level scale. A jet trajectory tracing device allows the path followed by the jet to be ascertained.
A freestanding unit developed to demonstrate the phenomena of pipe surge & water hammer when connected to a Hydraulics Bench
Stainless steel, 20.2 mm inside diameter, nominally 3 m long
Clear acrylic, 40 mm inside diameter, 800 mm high
PVC, capacity 45 litres
Description of Schlieren Systems
Schlieren Systems let you see shock waves as a combination of bright and dark areas. In the study of supersonic flow, shock and expansion waves are used to determine Mach number. In most situations, however, they are virtually invisible to the naked eye. Fortunately, a system developed in 1864 by German Physicist August Toepler allows waves to be viewed clearly for accurate angular measurements. Schlieren are optical in homogeneities in transparent materials. In supersonic flow, air experiences very large changes in density as it approaches, passes through and trails shock waves. As the density of air changes, so does its index of refraction.
Components of Schlieren Systems
Sub Sonic Open Circuit Wind Tunnel:
The Sub Sonic Open Circuit Wind Tunnel is simple and safe in operation. It is supplied as a complete self-contained facility mounted on castors for ease of movement. Main equipment comprises the tunnel with a three-component balance system (lift, drag and pitching moment) and an air speed indicator. Air enters the test section through a carefully designed contraction followed by an aluminum honeycomb flow straightener designed to ensure that the flow is steady in both magnitude and direction and has a flat transverse velocity profile. A low angle diffuser at the outlet end contributes to flow stability in the test section. An axial flow fan is located at the outlet of the diffuser section. One number of floor mount 3 component balance for lift force, drag force and pitching moment measurement is installed in the test section.
Experimental Capability of Sub Sonic Open Circuit Wind Tunnel:
Transonic Wind Tunnels
Description of Transonic Wind Tunnels
Using compressed air Transonic Wind Tunnels offer running speeds of M=0.3 to M=1.3. Employing variable test section porosity, computer-controlled valves, chokes and flaps, target airspeeds are easy to achieve and maintain. Systems with test section sizes of 8-inch x 8-inch (20.32cm x 20.32cm) and 20-inch x 20-inch (51cm x 51cm) are available.
Specifications of Transonic Wind Tunnels
Standard wind generator:
Educational Wind Tunnel
Description of Educational Wind Tunnel
Educational Wind Tunnel (EWT) System is a powerful tool for educators and researchers alike. With many optional features available, the budget-conscious user can start with a basic system and upgrade as needs change or funding becomes available.The Complete Educational Wind Tunnel System is an easy-to-use, all-in-one fluids aerodynamics laboratory. Optional features include instrumentation, data acquisition, models and probes.Perfectly scaled for high school or university use, the basic Educational Wind Tunnel system is also popular with small technical businesses needing an accurate, reliable testing device.
Specifications of Educational Wind Tunnel