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Large-scale water tunnel |
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[Installed: d: March in 1998] |
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| [Summary] |
 This
water tunnel is designed to reproduce airflow around an object by water flow using
a similitude rule of object flow. Simulation by this similitude rule has the advantage
of allowing observation and measurement of phenomena in slow motion because of
the slower passage time. This tunnel is the largest water flow testing system
in the world and it can clearly detect airflow around an electric wire and at
complicated geographies by visualization and instrumentation effective for clarification
of phenomena. |
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| [Objective] |
The water tunnel uses a similitude rule of fluid
mechanics to reproduce the same phenomenon in different fluids and the fact that
water dynamic viscosity (viscosity divided by with density) is one order of magnitude
or more smaller than that of airflow. This allows the investigation of experimentally
high frequency variation (high speed variation), difficult to observe and measure
in a normal air wind tunnel. |
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| [Specification] |
Test section cross-section : 2 m×2 m
Traveling distance : about 10 m
Maximum flow rate : 10 ton/sec (about 40 seconds)
Flow velocity range : 0 to 2.5 m/sec(Maximum flow rate condition)
Operating fluid : Water (ordinary temperature) |
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