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|Title:||A positive displacement oscillatory water tunnel|
|Authors:||United States, National Bureau of Standards|
Lofquist, Karl E. B.
|Publisher:||Coastal Engineering Research Center (U.S.)|
Engineer Research and Development Center (U.S.)
|Series/Report no.:||Miscellaneous report (Coastal Engineering Research Center (U.S.)) ; no. 77-1.|
Abstract: The water tunnel described produces sinusoidal flow with peak velocities adjustable from 0 to at least 30 centimeters per second for any period between 3 and 25 seconds. The tunnel is of U-tube design with the middle horizontal part comprising the test section. The vertical end parts are two cylinders with tight-fitting pistons at one end, and two reservoirs open to air at the other. The pistons are driven by a variable-speed electric motor, with an adjustable counter-weight permitting operation at resonance at any period.
|Appears in Collections:||Miscellaneous Report|