The Dynamic Response of Fluidic Circuits with Blocked and Orifice Terminated Lines

摘要

The dynamic response of a pneumatic circuit with mean flow was investigated experimentally in the 40-1050 Hz frequency range and the results compared with theory. All cases consisted of a 0.032 in ID line with either a blocked or orifice terminated end line. The orifice sizes used were 0.0135, 0.016 and 0.020 inch ID with a length of 0.062 inches. The line was tested at pressures from 1.5 to 26.0 psig. Comparison of experimental and theoretical results were made with a computer program using Nichols' equations as modified by Krishnaiyer and Lechner, with modification of attenuation for mean turbulent flow using Brown's work. A different orifice impedance model was used with mean turbulent flow than had been used with blocked or mean laminar flow. (Author)