Improving the lockhart and martinelli two-phase flow Correlation by SAS

Abstract

The correlation of Lockhart and Martinelli in its present form cannot be used to study a large set of data because it requires the use of charts and hence cannot be simulated numerically. A correlation between Lockhart and Martinelli parameters </>and X lor a two phase pressure drop in pipelines was developed using the Statistical Analysis System (SAS). This enabled the development of a computer program for the analysis of data using the Lockhart and Martinelli correlation. Field data from Saudi flowlines were then analysed using the program and the results show that the impoved Lockhart and Martinelli correlation predicts accurately the downstream pressure in flowlines with an average percent difference of 5.1 and standard deviation of 9.6%.