| SDSU
Water Tunnel
The San
Diego State University water tunnel is a closed-loop, variable-pressure,
and low-turbulence intensity water tunnel suitable for turbulence,
cavitation, and unsteady aerodynamics research. The test section
of the tunnel has a cross-section of 4”x5”, and
length of 24”, with a flow speed surpassing 6.4 meter
per second at a volume flow rate of 1320 gallons per minute.
To facilitate PIV flow field diagnosis, all four-side walls
of the test section are made of transparent acrylic material.
This state-of-the-art university lab-scale water tunnel can
be either pressurized up to 5 atmosphere to suppress cavitation
from occurring or depressurized to allow it to occur using
a compressor and a vacuum pump, respectively.
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 (VR
graph by Marlon Gerson)
Design
Parameters
- Speed:
0.0 - 6.4 m/s
- Test
section dimensions 4Wx5Hx24L inches
- Turbulence
Intensity: 0.1%
- Contraction
Ratio: 2.4:1
- Absolute
operational pressure: 0.2-75 psi
- Water
capacity: 700 gallons
- Pump
power: 30 Horse Power
Instrument
(Time-Resolved Planar, Stereo and Tomographic PIV systems)
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Low-Speed Wind Tunnel
The
San Diego State University Low Speed Wind Tunnel was designed
and constructed in 1963. Tunnel specifications are given below.
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- Closed
return type with speeds in the range 0-180 mph
- Test
section size 45Wx32Hx67L inches
- Turbulence
factor 1.27
- 150
Hp , variable pitch 4 blade propeller
- Particle
Image Velocimeter ( PIV) system
- TSI
IFA-300 anemometer system
-
3 Degree translation system
- 6-Components
Load Cell strain-gauge balance system
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Supersonic Wind
Tunnel
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- Mach
number range 1.0-4.5
- Test
section size - 6x6x10 inches
- 125
Hp motor driving a two stage air compressor
- Model's
angel of attack in the range +/- 25 degrees (remotely
controlled)
- Shock
wave visualization using 20 cm Schileren system
with two optical benches
- 32
channel Scanivalve ZOC system with 15 psi transducers
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All rights reserved.
Last updated on 12/30/2021
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