A New Method for Optimizing the Computing Process of IAPWS-IF97

摘要：

To improve the computing speed and accuracy of the latest IAPWS-IF97 (2007.8 Revision), by code optimization method, optimized the computing process of JAPWS-IF97. The key methods of optimizing the computing process of IAPWS-IF97 are merge constant values, refine algebra equations, delete common sub expressions, extract constant code out of cycle and weaken operation intensity. We need only use these methods to optimize the implementation of the basic equations, derivative equations and backward equations for regions 1, 2.3, the optimization rules are givea The most important optimization key method is using weaken operation intensity for theirs power operations. This paper mainly analyzed and tested the comparisons of computing time, accuracy and consistency before and after optimization in detail. After optimization, the results show that the operation count is more than 2.42 times decreased than before optimization on average, and the computing speed is more than 5.63 times faster than before optimization on average. The advantages are computing time faster, more accuracy and improved the consistency of the boundary of B23, Ts(p) and B2bc,ps (T).

关键词： IAPWS-IF97 water and steam thermodynamic properties optimization

作者: Yanming Zhou Jigeng Li Jingsong Tao Yongjun Yin Huanbin Liu

作者单位: State Key Laboratory of Pulp and Paper Engineering, South China University of Technology,Guangzhou 5 State Key Laboratory of Pulp and Paper Engineering, South China University of Technology,Guangzhou 5 State Key Laboratory of Pulp and Paper Engineering, South China University of Technology,Guangzhou 5

会议类型: 国际会议

会议名称: The First World Congress on Global Optimization in Engineering & Science(第一届工程与科学全局优化国际会议 WCGO2009)

会议地点: 长沙

会议语种:英文

页码: 984-992

在线出版日期: 2009-06-01（万方平台首次上网日期，不代表论文的发表时间）