Abstract:

Single methane bubbles are recorded under different pressure/temperature conditions to investigate the influence of pressure and artificial seawater on the bubble rise velocity. Therefore two similar experimental setups in the lab-scale are used, one for high-pressure applications and one for ambient conditions. For the generation of the bubbles in both setups the same capillaries are used. The gas phase is pure methane and the liquid phase (continuous phase) is artificial seawater as well as demineralized water (DI-water). The velocities at 4 °C and 20 °C and pressures of 0.2 and 15.1 MPa are compared. This dataset is an expansion of the results published in the dataset R1.x135.118:002 (DOI: 10.7266/N75M63N6).

Suggested Citation:

Schlüter, Michael and Katrin Laqua. 2017. Methane bubble rise velocities in artificial seawater and demineralized water under deep-sea and ambient conditions. Distributed by: GRIIDC, Harte Research Institute, Texas A&M University–Corpus Christi. doi:10.7266/N71J97RD

Publications:

Laqua, K., Malone, K., Hoffmann, M., Krause, D., & Schlüter, M. (2016). Methane bubble rise velocities under deep-sea conditions—Influence of initial shape deformation. Colloids and Surfaces A: Physicochemical and Engineering Aspects. doi:10.1016/j.colsurfa.2016.01.041

Purpose:

Methane bubble rise velocities are required to predict the distribution of gas in deep oceans. Therefore the experimental results shall be integrated in existing near and far field models. Due to the controversial discussion of the physical influencing parameter on bubble rise velocities under these conditions, different pressure/temperature conditions as well as two different continuous phases are investigated.

Data Parameters and Units:

The dataset contains four data sheets. The data sheets titled “general_information” and “exp_setup_and_evaluation” describe the experimental conditions, setup and evaluation of the data. The two remaining sheets contain data about the rise velocity as function of travel distance for three methane bubbles in artificial seawater at 4 °C and 15.1 MPa (data sheet “rise_velocity_15MPa_4°C”) and experimental results and theoretical correlations of methane bubble rise velocity as function of sphericity (data sheet “terminal_velocity”). Graphical representations of the data can be found in the corresponding publication (http://dx.doi.org/10.1016/j.colsurfa.2016.01.041). The following is a list of the dataset parameters. rise_velocity_15MPa_4°C; deq – Volume-equivalent diameter of a particle (mm); temperature – water temperature (c); pressure – (MPa); capillary diameter – (mm); terminal velocity – (m s^-1); avg. bubble diameter – (mm); travel distance – (mm); velocity – (m s^-1); time – (s); x pos. – (mm); terminal_velocity: deq – Volume-equivalent diameter of a particle (mm); temperature – water temperature (c); pressure – (MPa); avg. particle diameter, vol-eq. – (mm); avg. velocity – (m s^-1); E = a/b – (bubble sphericity)

Individual Files: