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Research Water Tunnel Model 2436


Water Tunnel Model 2436


The Rolling Hills Research Corporation Eidetics Flow Visualization Water Tunnel Model 2436 is a closed system facility suitable for studying a wide range of aerodynamic and fluid dynamic phenomena. RHRC water tunnels have been produced since 1985, providing many satisfied customers with excellent research facilities. The key features of the tunnel are high flow quality and horizontal orientation. The horizontal configuration facilitates model access, enables models to be readily changed without draining water from the tunnel, and provides for visualization of the flow axially from the downstream transverse window. The tunnel is operated as a continuous flow channel, negating the need for a sealed cover and providing model access while the tunnel is running. The extensive flow conditioning section has been recently redesigned to allow air bubbles to be easily cleared so the flow characteristics in the test section are excellent with minimal effort. The entire circuit is constructed of non-corrosive materials supported by a painted structural steel framework. The primary components are constructed of reinforced polyurethane resin impregnated fiberglass. The interior surfaces are formed against a high gloss mold surface for an exceptionally smooth surface. A special process is used to prevent osmotic pressure from causing bubbling of the surface over time. The exterior surfaces are composed of colored gel coat epoxy resin sprayed over chopped fiberglass and requires no painting.


The 24 inch wide by 36 inch high by 72 inch long test section is surrounded on two sides and the bottom by tempered glass to allow simultaneous viewing. Glass is vastly superior to plastic, such as Plexiglas, for photography and laser instruments. Axial viewing is provided by the downstream window. The tunnel centerline is located approximately at eye level to facilitate testing. The open area beneath the test section provides ample room for photographic or video recording equipment, including light fixtures.


Combined with the model support system and the 5 component balance system, the water tunnel is a unique and valuable tool used for the study of aerodynamic and fluid dynamic phenomena.  Perhaps the most valuable feature is the ability to simultaneously measure forces and observe the flow visualization.


Download a descriptive brochure for the Model 2436.


RHRC can also produce custom water tunnels to meet your specifications


The Model 2436 is now available in kit form for additional savings. For pricing information, email:


or call (310) 640-8781 ext. 22.





40' x 20' x 8' (LxWxH)


50,000 lbs. w/water


5,000 gallons

Test Section

24" x 36" x 72" (WxHxL)

Down Stream Window

24" x 28" (WxH)

Flow Velocity

0 to 1 ft./sec. nominal

Turbulence Intensity

<1.0% RMS

Centrifugal pump

10 hp, 230 VAC, 3-Phase, 60 Hz, 30 A

Dye System

Pressurized 6-color

Mounting Structure

Powder Coated Steel Frame



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