| 气动元件等温流动近似流量公式的探讨 |
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| 引用本文： | 史佚,陈乾斌,司冀.气动元件等温流动近似流量公式的探讨[J].液压气动与密封,2010,30(9):19-22. |
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| 作者姓名： | 史佚 陈乾斌 司冀 |
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| 作者单位： | 西安交通大学SMC气动技术中心,陕西西安,710049 |
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| 摘 要： | 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压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是一致的。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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| 关 键 词： | 等温流动 近似流量公式 临界压力比 |
An Approach to Approximate Isothermal Flow-Rate Formula for Pneumatic Components: Also an Discussion on Choosing b |
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| SHI Yi,CHEN Qian-bin,SI Ji.An Approach to Approximate Isothermal Flow-Rate Formula for Pneumatic Components: Also an Discussion on Choosing b[J].Hydraulics Pneumatics & Seals,2010,30(9):19-22. |
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| Authors: | SHI Yi CHEN Qian-bin SI Ji |
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| Abstract: | Considering the characteristics of compressible gas,the Bernoulli Equation was modified.Based on this,the approximate isothermal flow-rate formula of compressible gas was deduced.The deductive formula is consistent with simple flow-rate formula in the approximate case.It is proved theoretically that the flow-rate characteristic curve in the subsonic zone is similar to an elliptic.The approximate flow-rate formula of the compressible gas directly exhaust in air was deduced,it is consist with the flow-rate fo... |
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| Keywords: | isothermal flow approximate flow-rate formula critical pressure ratio |
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