DocumentCode :
3330589
Title :
An improved algorithm for calculating the compressibility factor of natural gases
Author :
Jinjie Huang ; Ningning Huang ; Chunli Yang
Author_Institution :
Sch. of Autom., Harbin Univ. of Sci. & Technol., Harbin, China
Volume :
2
fYear :
2011
fDate :
22-24 Aug. 2011
Firstpage :
876
Lastpage :
880
Abstract :
It would take much time to compute the compressibility factor of natural gas with AGA8-92DC method due to the iteration algorithm. To reduce the number of iterations, several curves of relationship between the gas molar density ρm and temperature T under different values of pressure P are fit by the Least-Square method. And then, the value of the molar density ρm under the current pressure P is obtained by the linear interpolation method, which is applied to the iterative calculation. Thus, the number of iterations is decreased and the real-time performance of the algorithm is improved. The modified algorithm is tested by some real-world data sets, and the results show that the improved algorithm is of high accuracy and good reliability, which can meet the requirements of industrial processes.
Keywords :
compressibility; computational fluid dynamics; interpolation; iterative methods; least squares approximations; natural gas technology; AGA8-92DC method; compressibility factor; gas molar density; interpolation method; iteration algorithm; least-square method; natural gas; reliability; Equations; Fitting; Mathematical model; Natural gas; Temperature; Thermodynamics; Uncertainty; compressibility factor; dynamic link; uncertain degree; virial equation;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Strategic Technology (IFOST), 2011 6th International Forum on
Conference_Location :
Harbin, Heilongjiang
Print_ISBN :
978-1-4577-0398-0
Type :
conf
DOI :
10.1109/IFOST.2011.6021160
Filename :
6021160
Link To Document :
بازگشت