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An Approach to Approximate Isothermal Flow-Rate Formula for Pneumatic Components: Also an Discussion on Choosing b
Author(s): SHI Zuo, CHEN Qianbin, SI Ji
Pages: 19-
22
Year: 2010
Issue:
9
Journal: Hydraulics Pneumatics & Seals
Abstract: 本文考虑了可压缩气体的特点,对伯努利方程作了修正,在此基础上推导出了可乐缩气体等温流动下的近似流量公式.在近似情况下,所推导出的公式与常用的简易流量公式足一致的.本文在理论上证明了流量特性曲线在亚声速区近似一椭圆曲线.推导出了可压缩气体直接排入大气中的近似流量公式,它与雍塞流公式一致.本文还推导出了不可压缩气体近似流量公式,研究表明,在亚声速区,流量与压力比近于一个抛物线关系.
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