The Experts below are selected from a list of 52071 Experts worldwide ranked by ideXlab platform
Chenguang Huang - One of the best experts on this subject based on the ideXlab platform.
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study of sterilization effects on marine vibrio sp using Interaction of cavitation with Shock wave in a narrow water chamber
Journal of Applied Physics, 2018Co-Authors: Jingzhu Wang, Akihisa Abe, Taketoshi Koita, M Sun, Yiwei Wang, Chenguang HuangAbstract:Cavitation bubbles could also be called as inertial bubbles because of their oscillation due to the pressure difference between inside and outside. After the passage of an underwater Shock wave, the violent collapses of the bubbles are induced and could produce stronger mechanical and biochemical actions so that the marine bacteria around them are inactivated by those productions. In the present study, cavitation inertial bubbles are observed behind multiple waves in a narrow water chamber after an electric discharge is triggered and then interacts with underwater reflected Shock waves from the water chamber. The sterilization effects of only these oscillating bubbles and cavitation-Shock Interaction are investigated by bio-experiments of marine Vibrio sp. The results show that a high sterilization is obtained in the case of the cavitation-Shock Interaction. Furthermore, the chemical action of free radicals mainly contributes to inactivating the marine bacteria. The generation of the hydroxyl (OH) radicals is clarified by measuring the concentration of H2O2. Subsequently, we focus on a theoretical analysis of the generation condition of the OH radicals by a bubble dynamic model consisting of an oscillation model and an impact model. Finally, the theoretical estimation by the bubble dynamic model is discussed under the conditions of the present experiments. As a result, there is a possibility of effective sterilization by the cavitation-Shock Interaction without the supply of air microbubbles.
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study of sterilization effects on marine vibrio sp using Interaction of cavitation with Shock wave in a narrow water chamber
bioRxiv, 2018Co-Authors: Jingzhu Wang, Akihisa Abe, Taketoshi Koita, M Sun, Yiwei Wang, Chenguang HuangAbstract:When underwater Shock waves are generated by an electric discharge in a narrow water chamber, the instant release of a great amount of energy causes the propagation of a shear wave in wall material with the deformation of the chamber wall. The shear waves produce decompression in water and result in the growth of bubble nuclei. Subsequently, those oscillating cavitation bubbles are exposed to the Shock pressures, and thus free radicals and rebound Shock waves are generated due to their violent collapses. Eventually, marine bacteria around them are inactivated by these productions. In the present study, we investigate the sterilization effects of these oscillating bubbles and cavitation-Shock Interaction by bio-experiments, respectively. Furthermore, the chemical action of free radicals on marine bacteria is discussed. The generation of the OH radicals is clarified by measuring the concentration of the H2O2. To estimate the generation condition of the OH radicals, a bubble dynamic model consisting of an oscillation model for the growth of bubble nuclei and an impact model to describe the cavitation-Shock Interaction is developed. Finally, the theoretical estimation by the bubble dynamic model is discussed under the conditions of the present experiments.
Jingzhu Wang - One of the best experts on this subject based on the ideXlab platform.
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study of sterilization effects on marine vibrio sp using Interaction of cavitation with Shock wave in a narrow water chamber
Journal of Applied Physics, 2018Co-Authors: Jingzhu Wang, Akihisa Abe, Taketoshi Koita, M Sun, Yiwei Wang, Chenguang HuangAbstract:Cavitation bubbles could also be called as inertial bubbles because of their oscillation due to the pressure difference between inside and outside. After the passage of an underwater Shock wave, the violent collapses of the bubbles are induced and could produce stronger mechanical and biochemical actions so that the marine bacteria around them are inactivated by those productions. In the present study, cavitation inertial bubbles are observed behind multiple waves in a narrow water chamber after an electric discharge is triggered and then interacts with underwater reflected Shock waves from the water chamber. The sterilization effects of only these oscillating bubbles and cavitation-Shock Interaction are investigated by bio-experiments of marine Vibrio sp. The results show that a high sterilization is obtained in the case of the cavitation-Shock Interaction. Furthermore, the chemical action of free radicals mainly contributes to inactivating the marine bacteria. The generation of the hydroxyl (OH) radicals is clarified by measuring the concentration of H2O2. Subsequently, we focus on a theoretical analysis of the generation condition of the OH radicals by a bubble dynamic model consisting of an oscillation model and an impact model. Finally, the theoretical estimation by the bubble dynamic model is discussed under the conditions of the present experiments. As a result, there is a possibility of effective sterilization by the cavitation-Shock Interaction without the supply of air microbubbles.
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study of sterilization effects on marine vibrio sp using Interaction of cavitation with Shock wave in a narrow water chamber
bioRxiv, 2018Co-Authors: Jingzhu Wang, Akihisa Abe, Taketoshi Koita, M Sun, Yiwei Wang, Chenguang HuangAbstract:When underwater Shock waves are generated by an electric discharge in a narrow water chamber, the instant release of a great amount of energy causes the propagation of a shear wave in wall material with the deformation of the chamber wall. The shear waves produce decompression in water and result in the growth of bubble nuclei. Subsequently, those oscillating cavitation bubbles are exposed to the Shock pressures, and thus free radicals and rebound Shock waves are generated due to their violent collapses. Eventually, marine bacteria around them are inactivated by these productions. In the present study, we investigate the sterilization effects of these oscillating bubbles and cavitation-Shock Interaction by bio-experiments, respectively. Furthermore, the chemical action of free radicals on marine bacteria is discussed. The generation of the OH radicals is clarified by measuring the concentration of the H2O2. To estimate the generation condition of the OH radicals, a bubble dynamic model consisting of an oscillation model for the growth of bubble nuclei and an impact model to describe the cavitation-Shock Interaction is developed. Finally, the theoretical estimation by the bubble dynamic model is discussed under the conditions of the present experiments.
Yuxin Zhao - One of the best experts on this subject based on the ideXlab platform.
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application of free Interaction theory in swept Shock wave turbulent boundary layer Interactions
Journal of Visualization, 2018Co-Authors: Gang He, Jin Zhou, Yuxin ZhaoAbstract:Fin-generated swept Shock wave/turbulent boundary layer Interactions were experimentally investigated via nanoparticle-based planar laser scattering method, surface oil flow visualizations, surface pressure measurements, and particle image velocimetry. Surface plateau pressure is also theoretically predicted. The plateau pressure of present quasi-conical swept Shock Interaction is dependent on the local skin friction coefficient and normal Mach number component, and can be predicted per a criterion deduced from free Interaction theory. Visualizations and surface pressure measurements confirm that the surface plateau pressure data are equal to the pressure downstream of the separation Shock; the upstream influence line is parallel to the impingement line of the separation Shock on the flat plate. These observations support the free Interaction theory as-applied to quasi-conical swept Shock Interactions.
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Application of free Interaction theory in swept Shock wave/turbulent boundary layer Interactions
Journal of Visualization, 2017Co-Authors: Jin Zhou, Yuxin ZhaoAbstract:Fin-generated swept Shock wave/turbulent boundary layer Interactions were experimentally investigated via nanoparticle-based planar laser scattering method, surface oil flow visualizations, surface pressure measurements, and particle image velocimetry. Surface plateau pressure is also theoretically predicted. The plateau pressure of present quasi-conical swept Shock Interaction is dependent on the local skin friction coefficient and normal Mach number component, and can be predicted per a criterion deduced from free Interaction theory. Visualizations and surface pressure measurements confirm that the surface plateau pressure data are equal to the pressure downstream of the separation Shock; the upstream influence line is parallel to the impingement line of the separation Shock on the flat plate. These observations support the free Interaction theory as-applied to quasi-conical swept Shock Interactions.
Yiwei Wang - One of the best experts on this subject based on the ideXlab platform.
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study of sterilization effects on marine vibrio sp using Interaction of cavitation with Shock wave in a narrow water chamber
Journal of Applied Physics, 2018Co-Authors: Jingzhu Wang, Akihisa Abe, Taketoshi Koita, M Sun, Yiwei Wang, Chenguang HuangAbstract:Cavitation bubbles could also be called as inertial bubbles because of their oscillation due to the pressure difference between inside and outside. After the passage of an underwater Shock wave, the violent collapses of the bubbles are induced and could produce stronger mechanical and biochemical actions so that the marine bacteria around them are inactivated by those productions. In the present study, cavitation inertial bubbles are observed behind multiple waves in a narrow water chamber after an electric discharge is triggered and then interacts with underwater reflected Shock waves from the water chamber. The sterilization effects of only these oscillating bubbles and cavitation-Shock Interaction are investigated by bio-experiments of marine Vibrio sp. The results show that a high sterilization is obtained in the case of the cavitation-Shock Interaction. Furthermore, the chemical action of free radicals mainly contributes to inactivating the marine bacteria. The generation of the hydroxyl (OH) radicals is clarified by measuring the concentration of H2O2. Subsequently, we focus on a theoretical analysis of the generation condition of the OH radicals by a bubble dynamic model consisting of an oscillation model and an impact model. Finally, the theoretical estimation by the bubble dynamic model is discussed under the conditions of the present experiments. As a result, there is a possibility of effective sterilization by the cavitation-Shock Interaction without the supply of air microbubbles.
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study of sterilization effects on marine vibrio sp using Interaction of cavitation with Shock wave in a narrow water chamber
bioRxiv, 2018Co-Authors: Jingzhu Wang, Akihisa Abe, Taketoshi Koita, M Sun, Yiwei Wang, Chenguang HuangAbstract:When underwater Shock waves are generated by an electric discharge in a narrow water chamber, the instant release of a great amount of energy causes the propagation of a shear wave in wall material with the deformation of the chamber wall. The shear waves produce decompression in water and result in the growth of bubble nuclei. Subsequently, those oscillating cavitation bubbles are exposed to the Shock pressures, and thus free radicals and rebound Shock waves are generated due to their violent collapses. Eventually, marine bacteria around them are inactivated by these productions. In the present study, we investigate the sterilization effects of these oscillating bubbles and cavitation-Shock Interaction by bio-experiments, respectively. Furthermore, the chemical action of free radicals on marine bacteria is discussed. The generation of the OH radicals is clarified by measuring the concentration of the H2O2. To estimate the generation condition of the OH radicals, a bubble dynamic model consisting of an oscillation model for the growth of bubble nuclei and an impact model to describe the cavitation-Shock Interaction is developed. Finally, the theoretical estimation by the bubble dynamic model is discussed under the conditions of the present experiments.
Taketoshi Koita - One of the best experts on this subject based on the ideXlab platform.
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study of sterilization effects on marine vibrio sp using Interaction of cavitation with Shock wave in a narrow water chamber
Journal of Applied Physics, 2018Co-Authors: Jingzhu Wang, Akihisa Abe, Taketoshi Koita, M Sun, Yiwei Wang, Chenguang HuangAbstract:Cavitation bubbles could also be called as inertial bubbles because of their oscillation due to the pressure difference between inside and outside. After the passage of an underwater Shock wave, the violent collapses of the bubbles are induced and could produce stronger mechanical and biochemical actions so that the marine bacteria around them are inactivated by those productions. In the present study, cavitation inertial bubbles are observed behind multiple waves in a narrow water chamber after an electric discharge is triggered and then interacts with underwater reflected Shock waves from the water chamber. The sterilization effects of only these oscillating bubbles and cavitation-Shock Interaction are investigated by bio-experiments of marine Vibrio sp. The results show that a high sterilization is obtained in the case of the cavitation-Shock Interaction. Furthermore, the chemical action of free radicals mainly contributes to inactivating the marine bacteria. The generation of the hydroxyl (OH) radicals is clarified by measuring the concentration of H2O2. Subsequently, we focus on a theoretical analysis of the generation condition of the OH radicals by a bubble dynamic model consisting of an oscillation model and an impact model. Finally, the theoretical estimation by the bubble dynamic model is discussed under the conditions of the present experiments. As a result, there is a possibility of effective sterilization by the cavitation-Shock Interaction without the supply of air microbubbles.
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study of sterilization effects on marine vibrio sp using Interaction of cavitation with Shock wave in a narrow water chamber
bioRxiv, 2018Co-Authors: Jingzhu Wang, Akihisa Abe, Taketoshi Koita, M Sun, Yiwei Wang, Chenguang HuangAbstract:When underwater Shock waves are generated by an electric discharge in a narrow water chamber, the instant release of a great amount of energy causes the propagation of a shear wave in wall material with the deformation of the chamber wall. The shear waves produce decompression in water and result in the growth of bubble nuclei. Subsequently, those oscillating cavitation bubbles are exposed to the Shock pressures, and thus free radicals and rebound Shock waves are generated due to their violent collapses. Eventually, marine bacteria around them are inactivated by these productions. In the present study, we investigate the sterilization effects of these oscillating bubbles and cavitation-Shock Interaction by bio-experiments, respectively. Furthermore, the chemical action of free radicals on marine bacteria is discussed. The generation of the OH radicals is clarified by measuring the concentration of the H2O2. To estimate the generation condition of the OH radicals, a bubble dynamic model consisting of an oscillation model for the growth of bubble nuclei and an impact model to describe the cavitation-Shock Interaction is developed. Finally, the theoretical estimation by the bubble dynamic model is discussed under the conditions of the present experiments.