An Initial Model for the Finite Displacement Response Characteristics of a Fluidyne Pump.

摘要: Abstract : This paper is the final report on independent laboratory in house research (ILIR) sponsored work by Harry Diamond Laboratories Fluidyne pump. The effort started with a survey of extant literature subject, continued experimental observations that led to mathematical model, and has culminated comprehensive statement physical operation particulary sparse subject; hence, only basic references are cited. presents detailed model fluid mechanical thermodynamic processes occurring during oscillation. A positive-feedback simulation postulated demonstrates, for first time, physically why there an onset oscillations subsequent sustained motion. based actual startup process prototype initially reported efficiency this heat engine was less than 0.3 percent. Currently, pumps have demonstrated efficiencies about 2 peak efficiencies, however, may theoretically approach 10 shown large losses occur transfer working gas, displacer liquid, friction output line. Improvements these areas dramatically improve observed overall efficiency. cycle itself, is, done relative work, order