Hydrodynamics of Underwater Blowouts

Fanneløp, T. K.; Sjoen, K.

doi:10.2514/6.1980-219

Cited by 61 publications

(44 citation statements)

References 6 publications

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“…IRAN E. LIMA NETO and PRISCILA A.B. PARENTE Figure 3 shows model predictions of the axial variation of u c and b and experimental data of Fannelöp and Sjöen (1980) Figure 3(b) were up to about 3% higher. This suggests that even for relatively small water depths as in the present case, dissolution can have an impact on bubble plume hydrodynamics.…”

Section: Resultsmentioning

confidence: 96%

Influence of mass transfer on bubble plume hydrodynamics

Neto

Parente

2016

An. Acad. Bras. Ciênc.

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This paper presents an integral model to evaluate the impact of gas transfer on the hydrodynamics of bubble plumes. The model is based on the Gaussian type self-similarity and functional relationships for the entrainment coeffi cient and factor of momentum amplifi cation due to turbulence. The impact of mass transfer on bubble plume hydrodynamics is investigated considering different bubble sizes, gas fl ow rates and water depths. The results revealed a relevant impact when fi ne bubbles are considered, even for moderate water depths. Additionally, model simulations indicate that for weak bubble plumes (i.e., with relatively low fl ow rates and large depths and slip velocities), both dissolution and turbulence can affect plume hydrodynamics, which demonstrates the importance of taking the momentum amplifi cation factor relationship into account. For deeper water conditions, simulations of bubble dissolution/decompression using the present model and classical models available in the literature resulted in a very good agreement for both aeration and oxygenation processes. Sensitivity analysis showed that the water depth, followed by the bubble size and the fl ow rate are the most important parameters that affect plume hydrodynamics. Lastly, dimensionless correlations are proposed to assess the impact of mass transfer on plume hydrodynamics, including both the aeration and oxygenation modes.

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Section: Resultsmentioning

confidence: 96%

Influence of mass transfer on bubble plume hydrodynamics

Neto

Parente

2016

An. Acad. Bras. Ciênc.

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“…Для описания сложного процесса истечения легкого газа из подводного трубопровода в работах [3,4] была предложена упрощенная интегральная модель. Недостатком этой интегральной модели являются сильная зависимость от эмпирических коэффициентов и невозможность описать процесс вблизи поверхности моря.…”

Section: рис 1 схема истечения природного газа из подводного газопрunclassified

Numerical Modeling of Nature Gas Leakage from Underwater Gas Pipeline

Zhang¹,

Men’shov

2017

KIAM Prepr.

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“…Initially, Fannelop and Sjoen (1980) focused on the case of the evolution of a single gas plume in the ocean. These authors proposed an approach of simplified analytical modeling, with non-dimensional solutions, and applicable in cases of spills in shallow waters.…”

mentioning

confidence: 99%

“…Meanwhile, the Fannelop and Sjoen (1980) approach does not consider horizontal advection of gas through the currents. Some advance on this initial idea was proposed by Friedl and Fanneløp (2000), when routines were added that considered the elevation in the surface of the sea provoked by the reaching of the gas to the surface (fountain effect, Fig.…”

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confidence: 99%

Influence of underwater hydrodynamics on oil and gas blowouts off Amazon River Mouth

et al. 2018

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RESUMO.O estudo está focado na análise do comportamento das plumas de vazamento de óleo/gás em águas profundas, localizadas na plataforma continental do norte do Brasil. O modelo Regional Ocean Modeling System (ROMS) é utilizado para simular a dinâmica oceânica na região 60.5°-24°W/5°S-16°N com 0.25° de resolução, 32 níveis verticais e considerando as descargas dos rios Amazonas e Pará. A saída do modelo ROMS é comparada com o conjunto de dados SODA (Simple Ocean Data Assimilation). ABSTRACT. This study is focused on analyzing the behavior of oil/gas plumes from blowouts into deepwater, located at the northern Brazil continental shelf. The Regional Ocean Modeling System (ROMS) model is used to simulate ocean dynamics in the region 60.5°-24.0°W/5°S-16°N with 0.25° of resolution, 32 vertical levels and considering the discharges of the Amazon and Pará Rivers. The ROMS output are compared to Simple Ocean Data Assimilation (SODA) dataset. Three points were selected to make the numerical simulations, located at (50°W, 5.25°N), (44.5°W, 0.5°N) and (42.75°W, 1°S). The time step suggested by Lee and Cheung (1990) was adjusted due to the particular oceanographic conditions at each point, in which, the initial velocity tends to zero and the coefficient 0.1 of the original equation was replaced by 0.0250 and 0.0375. All the plumes behaved as type 3. The seasonal current speed was small from the bottom to the surface, usually not exceeding 0.25 ms -1 ; the maximum displacement of the plumes from its point of origin was not greater than 1 m. The mean plumes diameter on the surface ranged 54 -79.7 m and the arrival time to the surface was from 7.25 to 8.05 hours.

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Hydrodynamics of Underwater Blowouts

Cited by 61 publications

References 6 publications

Influence of mass transfer on bubble plume hydrodynamics

Influence of mass transfer on bubble plume hydrodynamics

Numerical Modeling of Nature Gas Leakage from Underwater Gas Pipeline

Influence of underwater hydrodynamics on oil and gas blowouts off Amazon River Mouth

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