Invention Grant
- Patent Title: System and method for efficient computation of simulated thermodynamic property and phase equilibrium characteristics using comprehensive local property models
- Patent Title (中): 使用综合局部性质模型有效计算模拟热力学性质和相平衡特征的系统和方法
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Application No.: US12698063Application Date: 2010-02-01
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Publication No.: US07987082B2Publication Date: 2011-07-26
- Inventor: David J. Van Peursem , Gang Xu
- Applicant: David J. Van Peursem , Gang Xu
- Applicant Address: US MA Foxboro
- Assignee: Invensys Systems, Inc.
- Current Assignee: Invensys Systems, Inc.
- Current Assignee Address: US MA Foxboro
- Agency: Conley Rose, P.C.
- Main IPC: G06F9/455
- IPC: G06F9/455
Abstract:
A method of estimating a thermophysical property of a fluid using a local model is disclosed herein. The method includes generating, for use within the local model, a series expansion of thermodynamic equations relating to the thermophysical property and one or more derivatives involving the thermophysical property. The method further includes evaluating, based upon a set of specified values of parameters of the fluid, a first order term of the series expansion and a second order term of the series expansion. The values of the first order term and the second order term are then compared. A value of the thermophysical property is then automatically updated when the values of the first order term and the second order term are found to differ by more than a predefined amount.
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