HRTF -
Experiments
The initial experiments will be on a flat plate, investigating both the turbulent boundary layer and the wake. The next phase will involve a submarine-type body in both steady and unsteady flow configurations and will utilize the Magnetic Suspension Balance.
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FLAT PLATE
There will be two configurations of flat plate - one to maximize the Reynolds number for the boundary layer study and one to enable a full study of the wake. Click here to see the skeleton of the boundary layer plate and its location in the upstream test section. The skeleton is covered with a stainless steel plate with a 24 microinch ("smooth") surface finish on the measurement side.
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BODY OF REVOLUTION
The DARPA SUBOFF geometry shown below will be used to gather high Reynolds number flow measurements. Configurations with and without the fairwater sail will be completed. The Magnetic Suspension Balance (MSB) will ultimately be used with the submarine model to obtain ‘clean’ flow data. Click here to see previous results with the same submarine geometry. The final model geometry and the complete experimental testing have not been finalized.
<N. Groves, T. Huang & M. Chang. "Geometric Characteristics of DARPA SUBOFF Models." DTRC/SHD-1298-01. March 1989.>