Abstract:

This dataset reports the effects of Sodium dodecyl sulfate (SDS) surfactant on crude oil droplet dynamics in the water column. Various concentrations of SDS surfactant were used (0-750 ppm) which was added to the continuous phase, water. Droplets ranging between 3 to 8.5 mm were generated from nozzles made of Borosilicate or steel (ID from 1.0 mm to 8.5 mm). Droplet diameter, velocity, aspect ratio, and were measured experimentally and allied Computational Fluid Dynamics model was developed using traditional Volume of Fluid approach to emulate the experimental observations.

Suggested Citation:

Abhijit Rao, Rupesh K. Reddy, Franz Ehrenhauser, Krishnaswamy Nandakumar, Louis J. Thibodeaux, Dandina Rao and Kalliat T Valsaraj. 2016. Dataset for: Effect of Surfactant on the Dynamics of a Crude Oil Droplet in Water Column: Experimental and Numerical Investigation. Distributed by: GRIIDC, Harte Research Institute, Texas A&M University–Corpus Christi. doi:10.7266/N7CV4FQR

Publications:

Rao, A., Reddy, R. K., Ehrenhauser, F., Nandakumar, K., Thibodeaux, L. J., Rao, D., & Valsaraj, K. T. (2014). Effect of surfactant on the dynamics of a crude oil droplet in water column: Experimental and numerical investigation. The Canadian Journal of Chemical Engineering, 92(12), 2098–2114. doi:10.1002/cjce.22074

Rao, A., Reddy, R. K., Valsaraj, K. T., Nandakumar, K., Pandey, S., & Wu, C. (2014). Influence of unsteady mass transfer on dynamics of rising and sinking droplet in water: Experimental and CFD study. AIChE J., 61(1), 342–354. doi:10.1002/aic.14612

Purpose:

Investigation of droplet dynamics furnishes essential information on parameters like effective interfacial area and rise velocities, which govern the transport processes occurring in deep water oil spills injected with surfactants and also facilitate determination of the fate of the droplet in the water column.

Data Parameters and Units:

Figure 3. SDS surfactant concentration (mM); solute (g); surfactant concentration (ppm); surfactant concentration (Conc, M); Mass fraction; Sigma; interfacial tension (IFT, mN/m). Figure 6. Droplet diameter (cm), SDS surfactant concentration (ppm); nozzle type; diameter correlation; experiment A1 (1.0 mm nozzle, borosilicate); experiment A2 (2.65 mm nozzle, borosilicate); experiment A3 (8.5 mm nozzle, steel). Figure 10. Droplet aspect ratio, SDS surfactant concentration (ppm) Droplet Aspect ratio for experiments A1-A3; theoretical/Simulation droplet aspect ratio for experiments A1-A3; experiment A1 (1.0 mm nozzle, borosilicate); experiment A2 (2.65 mm nozzle, borosilicate); experiment A3 (8.5 mm nozzle, steel). Figure 11. droplet diameter (cm), rise velocity (cm/s), SDS surfactant concentration (ppm), droplet velocity (cm/s); experiment A1 (1.0 mm nozzle, borosilicate); experiment A2 (2.65 mm nozzle, borosilicate); experiment A3 (8.5 mm nozzle, steel). Figure 12. droplet diameter (cm), SDS surfactant concentration (ppm); droplet Aspect ratio; droplet velocity (cm/s); average rise velocity (cm/s); Eotvos Number (Eo, dimensionless); Reynold number (Re, dimensionless); Morton number (M, dimensionless); Weber number (We); Drag coefficient (Cd); density of oil (rho oil, kg/m^3); density of water (rho water, kg/m^3); dynamic viscocity for oil (muoil); dynamic viscocity for oil (mu_star); difference in density between phases (del rho, kg/m^3); dynamic viscocity for water (mu); gravitational acceleration (g, m/s^2); nozzle type. Figure 14. SDS surfactant concentration (ppm); experimental aspect ratio; simulation aspect ratio; experimental average rise velocity (cm/s); simulation average rise velocity (cm/s). Figure 15. Total pressure (N/m^2); theta (degrees); SDS surfactant concentration (ppm)

Individual Files: