The Experts below are selected from a list of 6 Experts worldwide ranked by ideXlab platform
S A Abakumov - One of the best experts on this subject based on the ideXlab platform.
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Turbulent mixing at the gas?liquid interface with a mixing zone width of up to 200?mm
Physica Scripta, 2010Co-Authors: N V Nevmerzhitsky, V I Dudin, A A Nikulin, E D Sen'kovsky, V. V. Marmyshev, E. A. Sotskov, O. L. Krivonos, A. A. Polovnikov, E A Polovnikov, S A AbakumovAbstract:In this paper, we present the results of our experimental study of the development of turbulent mixing (TM) occurring at a Rayleigh?Taylor instability at the liquid?gas interface with mixing zone width (H) up to 200?mm. A liquid layer (Water) of mass up to 3.3?kg was accelerated in a transparent cylindrical channel of ?=210?mm with the help of compressed air. The pressure of compressed air reached 8.4?atm, acceleration rate g=(0.5?1)?103g0 (where g0=9.8?m?s?2), layer displacement S was up to 350?mm, penetration depth of the gas front into the liquid hLH was up to 50?mm and the Reynolds number of the flow reached (where A?1 is the Atwood number and ? is the coefficient of Kinematic Water Viscosity). The following results were obtained: (i) the coefficient ?LH, which characterizes the average penetration rate of the gas front into the liquid (?LH=?hLH/?2S), was ?LH?0.11 over the range of layer displacements 10?mm
Gabriel G. Katul - One of the best experts on this subject based on the ideXlab platform.
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Multiple mechanisms generate a universal scaling with dissipation for the air‐Water gas transfer velocity
Geophysical Research Letters, 2017Co-Authors: Gabriel G. KatulAbstract:A large corpus of field and laboratory experiments support the finding that the Water side transfer velocity kL of sparingly soluble gases near air-Water interfaces scales as kL∼(νe)1/4, where ν is the Kinematic Water Viscosity and e is the mean turbulent kinetic energy dissipation rate. Originally predicted from surface renewal theory, this scaling appears to hold for marine and coastal systems and across many environmental conditions. It is shown that multiple approaches to representing the effects of turbulence on kL lead to this expression when the Kolmogorov microscale is assumed to be the most efficient transporting eddy near the interface. The approaches considered range from simplified surface renewal schemes with distinct models for renewal durations, scaling and dimensional considerations, and a new structure function approach derived using analogies between scalar and momentum transfer. The work offers a new perspective as to why the aforementioned 1/4 scaling is robust.
N V Nevmerzhitsky - One of the best experts on this subject based on the ideXlab platform.
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Turbulent mixing at the gas?liquid interface with a mixing zone width of up to 200?mm
Physica Scripta, 2010Co-Authors: N V Nevmerzhitsky, V I Dudin, A A Nikulin, E D Sen'kovsky, V. V. Marmyshev, E. A. Sotskov, O. L. Krivonos, A. A. Polovnikov, E A Polovnikov, S A AbakumovAbstract:In this paper, we present the results of our experimental study of the development of turbulent mixing (TM) occurring at a Rayleigh?Taylor instability at the liquid?gas interface with mixing zone width (H) up to 200?mm. A liquid layer (Water) of mass up to 3.3?kg was accelerated in a transparent cylindrical channel of ?=210?mm with the help of compressed air. The pressure of compressed air reached 8.4?atm, acceleration rate g=(0.5?1)?103g0 (where g0=9.8?m?s?2), layer displacement S was up to 350?mm, penetration depth of the gas front into the liquid hLH was up to 50?mm and the Reynolds number of the flow reached (where A?1 is the Atwood number and ? is the coefficient of Kinematic Water Viscosity). The following results were obtained: (i) the coefficient ?LH, which characterizes the average penetration rate of the gas front into the liquid (?LH=?hLH/?2S), was ?LH?0.11 over the range of layer displacements 10?mm
V I Dudin - One of the best experts on this subject based on the ideXlab platform.
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Turbulent mixing at the gas?liquid interface with a mixing zone width of up to 200?mm
Physica Scripta, 2010Co-Authors: N V Nevmerzhitsky, V I Dudin, A A Nikulin, E D Sen'kovsky, V. V. Marmyshev, E. A. Sotskov, O. L. Krivonos, A. A. Polovnikov, E A Polovnikov, S A AbakumovAbstract:In this paper, we present the results of our experimental study of the development of turbulent mixing (TM) occurring at a Rayleigh?Taylor instability at the liquid?gas interface with mixing zone width (H) up to 200?mm. A liquid layer (Water) of mass up to 3.3?kg was accelerated in a transparent cylindrical channel of ?=210?mm with the help of compressed air. The pressure of compressed air reached 8.4?atm, acceleration rate g=(0.5?1)?103g0 (where g0=9.8?m?s?2), layer displacement S was up to 350?mm, penetration depth of the gas front into the liquid hLH was up to 50?mm and the Reynolds number of the flow reached (where A?1 is the Atwood number and ? is the coefficient of Kinematic Water Viscosity). The following results were obtained: (i) the coefficient ?LH, which characterizes the average penetration rate of the gas front into the liquid (?LH=?hLH/?2S), was ?LH?0.11 over the range of layer displacements 10?mm
A A Nikulin - One of the best experts on this subject based on the ideXlab platform.
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Turbulent mixing at the gas?liquid interface with a mixing zone width of up to 200?mm
Physica Scripta, 2010Co-Authors: N V Nevmerzhitsky, V I Dudin, A A Nikulin, E D Sen'kovsky, V. V. Marmyshev, E. A. Sotskov, O. L. Krivonos, A. A. Polovnikov, E A Polovnikov, S A AbakumovAbstract:In this paper, we present the results of our experimental study of the development of turbulent mixing (TM) occurring at a Rayleigh?Taylor instability at the liquid?gas interface with mixing zone width (H) up to 200?mm. A liquid layer (Water) of mass up to 3.3?kg was accelerated in a transparent cylindrical channel of ?=210?mm with the help of compressed air. The pressure of compressed air reached 8.4?atm, acceleration rate g=(0.5?1)?103g0 (where g0=9.8?m?s?2), layer displacement S was up to 350?mm, penetration depth of the gas front into the liquid hLH was up to 50?mm and the Reynolds number of the flow reached (where A?1 is the Atwood number and ? is the coefficient of Kinematic Water Viscosity). The following results were obtained: (i) the coefficient ?LH, which characterizes the average penetration rate of the gas front into the liquid (?LH=?hLH/?2S), was ?LH?0.11 over the range of layer displacements 10?mm
