Correlations for prediction of pressure gradient of liquid-liquid flow through a circular horizontal pipe
We report a detailed investigation on the measurement and prediction of pressure gradient characteristics of moderately viscous lubricating oil-water flow through a horizontal pipe of 0.025 m internal diameter. Experiments are carried out over a wide range of phase velocities of both oil (USO = 0.01...
| Main Authors: | , , , , |
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| Format: | Journal Article |
| Published: |
The American Society of Mechanical Engineers
2014
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| Online Access: | http://hdl.handle.net/20.500.11937/8288 |
| _version_ | 1848745613228769280 |
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| author | Dasari, A. Desamala, A. Ghosh, Ujjal Dasmahapatra, A. Mandal, T. |
| author_facet | Dasari, A. Desamala, A. Ghosh, Ujjal Dasmahapatra, A. Mandal, T. |
| author_sort | Dasari, A. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | We report a detailed investigation on the measurement and prediction of pressure gradient characteristics of moderately viscous lubricating oil-water flow through a horizontal pipe of 0.025 m internal diameter. Experiments are carried out over a wide range of phase velocities of both oil (USO = 0.015–1.25 m/s) and water (USW = 0.1–1.1 m/s). Experimental pressure gradients yield significant errors when fitted to the existing correlations, which are largely used for gas-liquid flow. To predict pressure gradient characteristics for liquid-liquid flow, the existing correlations need to be modified. We propose two correlations, based on the Lockhart–Martinelli's approach (by modifying the correlation between the Lockhart–Martinelli parameter and a two-phase multiplier suitable for the present system) and dimensionless analysis, following the Buckingham's Pi-theorem. We observe significant improvement in the prediction of pressure gradient. The correlation based on the dimensionless analysis predicts better with an average absolute error of 17.9%, in comparison with the modified Lockhart–Martinelli correlation, which yields an average error of 22%, covering all the flow patterns. The present analysis shows better prediction as compared to two-fluid model Zhang et al. (2012, “Modeling High-Viscosity Oil/Water Concurrent Flow in Horizontal and Vertical Pipes,” SPE J., 17(1), pp. 243–250) and Al-Wahaibi (2012, “Pressure Gradient Correlation for Oil-Water Separated Flow in Horizontal Pipes,” Exp. Therm. Fluid Sci., 42, pp. 196–203) work. |
| first_indexed | 2025-11-14T06:20:08Z |
| format | Journal Article |
| id | curtin-20.500.11937-8288 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T06:20:08Z |
| publishDate | 2014 |
| publisher | The American Society of Mechanical Engineers |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-82882017-09-13T14:34:29Z Correlations for prediction of pressure gradient of liquid-liquid flow through a circular horizontal pipe Dasari, A. Desamala, A. Ghosh, Ujjal Dasmahapatra, A. Mandal, T. We report a detailed investigation on the measurement and prediction of pressure gradient characteristics of moderately viscous lubricating oil-water flow through a horizontal pipe of 0.025 m internal diameter. Experiments are carried out over a wide range of phase velocities of both oil (USO = 0.015–1.25 m/s) and water (USW = 0.1–1.1 m/s). Experimental pressure gradients yield significant errors when fitted to the existing correlations, which are largely used for gas-liquid flow. To predict pressure gradient characteristics for liquid-liquid flow, the existing correlations need to be modified. We propose two correlations, based on the Lockhart–Martinelli's approach (by modifying the correlation between the Lockhart–Martinelli parameter and a two-phase multiplier suitable for the present system) and dimensionless analysis, following the Buckingham's Pi-theorem. We observe significant improvement in the prediction of pressure gradient. The correlation based on the dimensionless analysis predicts better with an average absolute error of 17.9%, in comparison with the modified Lockhart–Martinelli correlation, which yields an average error of 22%, covering all the flow patterns. The present analysis shows better prediction as compared to two-fluid model Zhang et al. (2012, “Modeling High-Viscosity Oil/Water Concurrent Flow in Horizontal and Vertical Pipes,” SPE J., 17(1), pp. 243–250) and Al-Wahaibi (2012, “Pressure Gradient Correlation for Oil-Water Separated Flow in Horizontal Pipes,” Exp. Therm. Fluid Sci., 42, pp. 196–203) work. 2014 Journal Article http://hdl.handle.net/20.500.11937/8288 10.1115/1.4026582 The American Society of Mechanical Engineers restricted |
| spellingShingle | Dasari, A. Desamala, A. Ghosh, Ujjal Dasmahapatra, A. Mandal, T. Correlations for prediction of pressure gradient of liquid-liquid flow through a circular horizontal pipe |
| title | Correlations for prediction of pressure gradient of liquid-liquid flow through a circular horizontal pipe |
| title_full | Correlations for prediction of pressure gradient of liquid-liquid flow through a circular horizontal pipe |
| title_fullStr | Correlations for prediction of pressure gradient of liquid-liquid flow through a circular horizontal pipe |
| title_full_unstemmed | Correlations for prediction of pressure gradient of liquid-liquid flow through a circular horizontal pipe |
| title_short | Correlations for prediction of pressure gradient of liquid-liquid flow through a circular horizontal pipe |
| title_sort | correlations for prediction of pressure gradient of liquid-liquid flow through a circular horizontal pipe |
| url | http://hdl.handle.net/20.500.11937/8288 |