A Method for Simulating Steady State Friction in Transient Fluid Flow.
AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OHIO SCHOOL OF ENGINEERING
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The small amplitude signal response for a 5 ft. and a 10 ft. 0.17 inch ID line to pneumatic saturating ramps was experimentally found. Average mean line conditions were 50.0 psia and 74F. The experimental results were compared with the predicted response of R. G. Leonards semiemperical time domain fluid model. The model was extended to include prediction of the steady state pressure loss. General agreement between the experimental and predicted response was indicated. Parametric studies were accomplished to examine the modified models response to different line conditions. The MIMIC programming language was investigated and applied for numerical solution of predicted fluid line response. A carousel digital time delay was programmed for use with the MIMIC numerical solution. The carousel time delay reduced execution time by a third as compared by MIMICs time delay function.
- Fluid Mechanics