Abstract:

This version of the Texas A&M Oil spill / Outfall Calculator (TAMOC) was modified from the TAMOC version available under GRIIDC Unique Dataset Identifier (UDI): R1.x138.077:0028 (DOI: 10.7266/N7DF6P8R) in order to enable simulations of the laboratory experiments involving a fixed volume of recirculated water. This version of TAMOC includes aqueous dissolution, slip velocities of fluid particles, enable two-phase fluid particles, and simulates the build-up of aqueously-dissolved chemical species in the experimental device water and its effect on mass transfer rate. Properties of fluid particles are updated in the model as a function of local pressure, temperature, and composition. These files model the fate of the different petroleum compounds using 23 chemical (pseudo-)components. The input files/simulations are parameterized based on experimental data by Pesch and Schlüter available at GRIIDC under UDI: R4.x267.000:0050 (DOI: 10.7266/N79885GB), also described in a scientific publication Pesch et al. (2018). The dataset contains source code, input files, and model output. This dataset supports the publication: Gros, J., Arey, J. S., Socolofsky, S. A., & Dissanayake, A. L. (2020). Dynamics of Live Oil Droplets and Natural Gas Bubbles in Deep Water. Environmental Science & Technology. doi:10.1021/acs.est.9b06242.

Suggested Citation:

Gros, Jonas, J. Samuel Arey, Scott A. Socolofsky, and Anusha L. Dissanayake. 2021. Research version of the Texas A&M Oil spill / Outfall Calculator (TAMOC) and input files for simulation of laboratory pressure vessel experiments. Distributed by: GRIIDC, Harte Research Institute, Texas A&M University–Corpus Christi. doi:10.7266/PSTFE3GN

Publications:

Gros, J., Arey, J. S., Socolofsky, S. A., & Dissanayake, A. L. (2020). Dynamics of Live Oil Droplets and Natural Gas Bubbles in Deep Water. Environmental Science & Technology. doi:10.1021/acs.est.9b06242

Purpose:

Simulate laboratory experiments with methane-saturated, free-rising oil droplets held stationary by a counterflow of recirculated seawater, for a fixed total system seawater volume. The aim of these simulations is to provide an explanation of these laboratory observations as a function of the underlying chemical and physical processes.

Data Parameters and Units:

Time (elapsed, [s]), simulated relative diameter, pressure in the experimental vessel [bar], simulated bubble point pressure [bar], simulated methane fraction in water, simulated methane mass fraction in the gas phase, simulated methane mass fraction in liquid petroleum phase, simulated fraction of the volume of the droplet occupied by gas, simulated fraction of the volume of the droplet occupied by the liquid, simulated liquid petroleum density [kg/m^3], simulated gas density [kg/m^3], simulated average droplet density [kg/m^3], oversaturation of vessel water with respect to dissolved gases [0=no, 1=yes].

Methods:

The TAMOC model [data available under GRIIDC dataset UDI R1.x138.077:0028 (https://doi.org/10.7266/N7DF6P8R)], has been slightly modified to enable the simulation of the specific conditions within a closed vessel (rather than the open sea): fixed volume of seawater within the closed system, pressure decreasing with time rather than with water depth. Note: Model output from experiments in which aqueous dissolution was suppressed is included for comparison purposes but does not represent realistic conditions.

Provenance and Historical References:

Pesch, S., Jaeger, P., Jaggi, A., Malone, K., Hoffmann, M., Krause, D., Oldenburg, T.B.P., & Schlüter, M. (2018). Rise Velocity of Live-Oil Droplets in Deep-Sea Oil Spills. Environmental Engineering Science. doi:10.1089/ees.2017.03

Individual Files: