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JIN Yingzi
Zhejiang Province Key Laboratory of
Textile Machinery,
Zhejiang SCI-TECH University,
Hangzhou 310018, China
YANG Qingjun
Department of Mechanical Engineering,
Harbin Institute of Technology,
Harbin 150001, China
WANG Zuwen
Department of Mechanical Engineering,
Dalian Maritime University,
Dalian 116026, China
ZHANG Jianci
Quzhou College,
Quzhou 324000, China |
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ANALYTICAL
SOLUTION OF FILLING
AND EXHAUSTING PROCESS IN
PNEUMATIC SYSTEM*
Abstract: The filling and exhausting processes in a pneumatic system are involved with many factors, and numerical solutions of many partial differential equations are always adapted in the study of those processes, which have been proved to be troublesome and less intuitive. Analytical solutions based on loss-less tube model and average friction tube model are found respectively by using fluid net theory, and they fit the experimental results well. The research work shows that: Fluid net theory can be used to solve the analytical solution of filling and exhausting processes of pneumatic system, and the result of loss-less tube model is close to that of average friction model, so loss-less tube model is recommended since it is simpler, and the difference between filling time and exhausting time is determined by initial and final pressures, the volume of container and the section area of tube, and has nothing to do with the length of the tube.
Key words:
Pneumatic system Filling and exhausting processes Fluid net theory Analytica l solution Loss-less tube model Filling time and exhausting time
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