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Method for providing robustness to the solution of the cubic equation of state

机译:为立方状态方程的解提供鲁棒性的方法

摘要

The cubic equations of state (CEOS) relate pressure, temperature and molar volume of a mixture. The deviation of the physical properties of a mixture from ideality is expressed by the compressibility factor. The compressibility factor is calculated from the CEOS. There is described a solution to the CEOS which provides a continuous solution for compressibility factors over the entire range of operating conditions. This solution avoids the non-unique roots, trivial roots and singularities that are present in the prior art solutions of the CEOS.
机译:状态的立方方程(CEOS)与混合物的压力,温度和摩尔体积有关。混合物的物理性质与理想度之间的偏差由可压缩系数表示。可压缩系数是从CEOS计算得出的。描述了一种针对CEOS的解决方案,该解决方案为整个操作条件范围内的可压缩性因子提供了连续的解决方案。该解决方案避免了存在于CEOS的现有技术解决方案中的非唯一根,琐碎根和奇异性。

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