一种爆破片气液两相流临界泄放计算方法

发布时间：2018-04-03 10:26

  本文选题：爆破片　切入点：分相模型　出处：《应用力学学报》2016年04期

【摘要】：针对爆破片气液两相流超压泄放难以确定的问题,应用分相模型和流体基本方程,在绝热等熵假设下引入滑速比理论,推导出气液两相流临界泄放量的计算模型。在环境压强为0.2MPa~0.6MPa情况下,计算得到:当含气率从0增加到0.1时,质量流量急剧下降;当含气率从0.1增加到0.96时,质量流量下降比较平缓;工况压力越大,质量流量越大。其中在含气率大于0.1时,计算结果与实验结果基本吻合;含气率小于0.1时,随着含气率趋近0,误差越来越大。含气率小于0.1时,通过与文献中Yoon模型、Fauske模型、实验结果进行比较,验证了绝热等熵模型仍然具有较高的准确性。最后将其与GB567-2012方法、等焓膨胀模型、均相计算模型比较,计算结果基本一致,验证了模型实际应用的准确性。
[Abstract]:In order to solve the problem that the overpressure release of gas-liquid two-phase flow in blasting disc is difficult to determine, the calculation model of critical discharge quantity of gas-liquid two-phase flow is deduced by applying the phase separation model and the basic fluid equation, and introducing the theory of slip velocity ratio under the assumption of adiabatic isentropic.When the ambient pressure is 0.2MPa~0.6MPa, the mass flow rate decreases sharply when the gas holdup increases from 0 to 0.1; when the gas content increases from 0. 1 to 0. 96, the mass flow rate decreases slightly; the higher the operating pressure, the greater the mass flow rate.The calculated results are in good agreement with the experimental results when the gas holdup is greater than 0.1, and the error increases with the gas holdup less than 0.1.When the gas content is less than 0.1, the experimental results show that the adiabatic Isentropic model is still accurate by comparing with the Yoon model and the Fauske model in the literature.Finally, compared with GB567-2012 method, iso-enthalpy expansion model and homogeneous calculation model, the calculation results are basically consistent, which verifies the accuracy of the model in practical application.
【作者单位】： 武汉科技大学资源与环境工程学院;
【分类号】：O359.1
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本文编号：1704795