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Abstract: With requirements of designing an adiabatic capillary tube
in engineering, an approximate analytic solution to the tube length
derived from the approximate integral model is developed. In order to
take the choked flow into account and avoid the consequent iterative
calculation in the approximate integral model, a direct method for
judging and evaluating the choked flow is presented on the basis of the
relationship between length and pressure. Case study shows that the
present approximate analytic solution could meet engineering precision.
Based on the approximate analytic solution, the choked characteristics
of flow in adiabatic capillary tubes are theoretically analyzed.
Key words: Capillary tube Choked flow Approximate analytic solution
CLC No: B65
国家重点基础研究发展规划项目(G2000026309)子课题. Received 20010409,
received in revised form 20010728
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