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M.A. Rahman

M.A. Rahman

Texas A&M University, Qatar

Title: Experimental Investigation of Pressure Drop for Gas / Shear Thinning Fluid Flows in a Horizontal Pipe

Biography

Biography: M.A. Rahman

Abstract

The objective of the study focuses on gas/non-Newtonian liquid horizontal flow in a pipeline. The gas and the liquid flow rates were varied over a wide range of flow conditions. The flow rate of the non-Newtonian liquid ranged from 0.023 to 0.115 m3/s, while that of the gas ranged from 0.023 to 0.160 m3/. The experiment was conducted to determine the pressure drop using a transparent pipe of 76.2 mm diameter and 2.44 m long horizontal pipe. Xanthan gum solution was used to simulate non-Newtonian fluid. The pressure drop gradient model of Lockhart-Martinelli as modified for gas/shear thinning fluid flow. The theoretical predictions of pressure loss were compared with the experimental data for air/shear thinning fluid flow results. From the experimental work, it was observed that the pressure drop was directly proportional with the concentration of Xanthan gum (shear thinning fluid). The flow regimes of bubbly, slug, plug and wavy flow were also captured by a high-speed camera.

Recent Publications:

Book

•         Rahman, M.A., (2011) Scaling of Effervescent Atomization, LAP LAMBERT Academic Publishing.

Publications in Journals

•         Xiong X., Rahman, M.A., Zhang, Y.(2015). RANS Based CFD Simulation of Fully Turbulent Newtonian Flow in Concentric Annuli. Journal of Fluids Engineering. Submitted on March, 2015.

•         Herath, D., Khan, F., Rathnayaka, S., Rahman, M.A. (2015). Probabilistic Estimation of Hydrate

•         Formation. Journal of Petroleum Science and Engineering. 135: 32–38.

•         Muhammad, M.J., Premkumar, T., Rahman, M.A., Khan, F. (2015). Subsea Pipeline Leak Modeling using Computational Fluid Dynamics. Process Safety and Environmental Protection. Submitted in 2015.

•         Rahman, M.A.(2015). An Empirical Model for Annular Flow in Gas Wells. Procedia Engineering.

•         Jujuly, M.M., Rahman, M.A., Ahmed, S., Khan, F.I.(2015). LNG Pool Fire Simulation For Domino Effect Analysis. Reliability Engineering & System Safety. 143: 19–29.

•         Sule, I., Obeng, C., Adedeji, A. and Okosun, A., Morshed, M., Rahman, M.A., Hawboldt, K.(2014), CFD Analysis of Hydrate Formation in Subsea Pipelines. Petroleum Science and Technology. 33(5):571-578.

•         Rahman, M.A., Amin, A., Hossain, A. and Fleck, B.(2014). Numerical Investigation of Two-Phase Nozzle, Flow. Procedia Engineering. 90: 346–350.  

Speaker Presentations

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