Accession Number : ADA132297

Title :   Turbulent Wall Pressure Simulation.

Descriptive Note : Final rept. Jul 82-Jun 83,

Corporate Author : OLD DOMINION UNIV NORFOLK VA DEPT OF MECHANICAL ENGINEERING AND MECHANICS

Personal Author(s) : Khorrami,Mehdi R

PDF Url : ADA132297

Report Date : Jul 1983

Pagination or Media Count : 85

Abstract : The root mean square pressure was calculated with synthetically generated pressure signals for transducers of different size. The transducer diameters were in the range of 0.02 d 1.18 at a Reynolds number of 12,250. The lower limit of the diameter simulated here was much smaller than diameters reported previously by other workers. Calculated root mean square pressure levels developed in the present work were in good agreement with the measured experimental data. In order to check the simulated pressure signals, the power spectrum and two point correlation were calculated as well. The power spectra obtained with the smaller transducers were higher in energy level at high frequencies. The shape of the power spectra were similar and overall agreement with experimental data was reasonable. The two point correlations were obtained for separation distances of 1.66, and 13.37. The same convection and decay effects as the experimental data were observed with the calculated correlations. Again, overall agreement with experimental result was quite good.

Descriptors :   *Pressure transducers, *Pressure measurement, *Turbulent flow, Computerized simulation, Power spectra, Aerodynamic characteristics, Flutter, Vibration, Walls, Aircraft panels, Mean

Subject Categories : Aircraft
      Electrical and Electronic Equipment
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE