Search Results - "Ida, Masato"

Conservative global gyrokinetic toroidal full- f five-dimensional Vlasov simulation by Idomura, Yasuhiro, Ida, Masato, Kano, Takuma, Aiba, Nobuyuki, Tokuda, Shinji

“…A new conservative global gyrokinetic toroidal full- f five-dimensional Vlasov simulation (GT5D) is developed using a novel non-dissipative conservative finite…”
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A characteristic frequency of two mutually interacting gas bubbles in an acoustic field by Ida, Masato

“…Transition frequencies of two spherical gas bubbles interacting in an acoustic field are discussed theoretically. In the present study, transition frequency is…”
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Bubble-bubble interaction: a potential source of cavitation noise by Ida, Masato

“…The interaction between microbubbles through pressure pulses has been studied to show that it can be a source of cavitation noise. A recent report demonstrated…”
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On the effect of microbubble injection on cavitation bubble dynamics in liquid mercury by Ida, Masato, Naoe, Takashi, Futakawa, Masatoshi

“…The effect of microbubble injection has been studied numerically to clarify the role of injected bubbles in the experimentally observed suppression of…”
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Effect of milk fermented with Lactobacillus acidophilus strain L-92 on symptoms of Japanese cedar [Cryptomeria japonica] pollen allergy: A randomized placebo-controlled trial by Ishida, Y.(Calpis Co. Ltd., Sagamihara, Kanagawa (Japan). R and D Center), Nakamura, F, Kanzato, H, Sawada, D, Yamamoto, N, Kagata, H, Ohida, M, Takeuchi, H, Fujiwara, S

“…A placebo-controlled, single-blind study was conducted to evaluate the effects of Lactobacillus acidophilus strain L-92 (L-92) on the symptoms of Japanese…”
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Investigation of transition frequencies of two acoustically coupled bubbles using a direct numerical simulation technique by IDA, Masato

“…The theoretical results regarding the "transition frequencies" of two acoustically interacting bubbles have been verified numerically. The theory provided by…”
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Mitigation Technologies for Damage Induced by Pressure Waves in High-Power Mercury Spallation Neutron Sources (III) -- Consideration of the Effect of Microbubbles on Pressure Wave Propagation through a Water Test by NAOE, Takashi, KOGAWA, Hiroyuki, FUTAKAWA, Masatoshi, IDA, Masato

“…The effects of microbubbles dispersed in a liquid on a high-rising-rate pressure wave were experimentally investigated with water. Intense, high-rising-rate…”
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Differences and Similarity in the Dynamic and Acoustic Properties of Gas Microbubbles in Liquid Mercury and Water by Ida, Masato, Haga, Katsuhiro, Kogawa, Hiroyuki, Naoe, Takashi, Futakawa, Masatoshi

“…Differences and similarities in the dynamics of microbubbles in liquid mercury and water are clarified and summarized in order to evaluate the validity and…”
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An improved unified solver for compressible and incompressible fluids involving free surfaces. II. Multi-time-step integration and applications by Ida, Masato

“…An improved numerical solver for the unified solution of compressible and incompressible fluids involving interfaces is proposed. The present method is based…”
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Mitigation Technologies for Damage Induced by Pressure Waves in High-Power Mercury Spallation Neutron Sources (III)-Consideration of the Effect of Microbubbles on Pressure Wave Propagation through a Water Test by NAOE, Takashi, KOGAWA, Hiroyuki, FUTAKAWA, Masatoshi, IDA, Masato

“…The effects of microbubbles dispersed in a liquid on a high-rising-rate pressure wave were experimentally investigated with water. Intense, high-rising-rate…”
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Number of transition frequencies of a system containing an arbitrary number of gas bubbles by IDA, Masato

“…"Transition frequencies" of a system containing an arbitrary number of bubbles levitated in a liquid are discussed. Using a linear coupled-oscillator model, it…”
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Shape optimization using adjoint variable method for reducing drag in Stokes flow by Shinohara, Kazunori, Okuda, Hiroshi, Ito, Satoshi, Nakajima, Norihiro, Ida, Masato

“…To minimize the drag of a 3D object placed under Stokes flow, an adjoint variable method based on the variational principle was formulated and applied to the…”
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Suppression of cavitation inception by gas bubble injection: a numerical study focusing on bubble-bubble interaction by Ida, Masato, Naoe, Takashi, Futakawa, Masatoshi

“…The dynamic behavior of cavitation and gas bubbles under negative pressure has been studied numerically to evaluate the effect of gas bubble injection into a…”
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A conservative semi-Lagrangian method for oscillation-free computation of advection processes by Ida, Masato

“…The semi-Lagrangian method using the hybrid-cubic-rational interpolation function [M. Ida, Comput. Fluid Dyn. J. 10 (2001) 159] is modified to a conservative…”
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Effects of Bjerknes Forces on Gas-Filled Microbubble Trapping by Ultrasonic Waves by Yoshiki Yamakoshi, Yoshiki Yamakoshi, Yoshiyuki Ozawa, Yoshiyuki Ozawa, Masato Ida, Masato Ida, Nobuyuki Masuda, Nobuyuki Masuda

“…When gas-filled microbubbles flow into an ultrasonic wavefield, the microbubbles interact with the ultrasonic waves and aggregate into large masses of bubbles…”
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Distribution of Microbubble Sizes and Behavior of Large Bubbles in Mercury Flow in a Mockup Target Model of J-PARC by HAGA, Katsuhiro, NAOE, Takashi, KOGAWA, Hiroyuki, KINOSHITA, Hidetaka, IDA, Masato, FUTAKAWA, Masatoshi, RIEMER, Bernard, WENDEL, Mark, FELDE, David, ABDOU, Ashraf

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An Eulerian Scheme for Direct Numerical Simulation of Multibubble Dynamics in an Acoustic Field by Masato Ida, Masato Ida, Yoshiki Yamakoshi, Yoshiki Yamakoshi

“…An Eulerian numerical scheme for the direct simulation of bubble dynamics in an acoustic field is proposed. The compressible Navier-Stokes equation with a…”
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Mitigation Technologies for Damage Induced by Pressure Waves in High-Power Mercury Spallation Neutron Sources (II) : Bubbling Effect to Reduce Pressure Wave by FUTAKAWA, Masatoshi, KOGAWA, Hiroyuki, HASEGAWA, Shoichi, NAOE, Takashi, IDA, Masato, HAGA, Katsuhiro, WAKUI, Takashi, TANAKA, Nobuatsu, MATSUMOTO, Yoichiro, IKEDA, Yujiro

“…Liquid mercury was suggested to be used as target material for high-power pulsed spallation neutron sources. In order to realize the high-power target,…”
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Mitigation Technologies for Damage Induced by Pressure Waves in High-Power Mercury Spallation Neutron Sources (II)-Bubbling E.ect to Reduce Pressure Wave by FUTAKAWA, Masatoshi, KOGAWA, Hiroyuki, HASEGAWA, Shoichi, NAOE, Takashi, IDA, Masato, HAGA, Katsuhiro, WAKUI, Takashi, TANAKA, Nobuatsu, MATSUMOTO, Yoichiro, IKEDA, Yujiro

“…Liquid mercury was suggested to be used as target material for high-power pulsed spallation neutron sources. In order to realize the high-power target,…”
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Direct observation and theoretical study of cavitation bubbles in liquid mercury by Ida, Masato, Naoe, Takashi, Futakawa, Masatoshi

“…The direct observation of cavitation bubbles emerging in liquid mercury under the action of mechanical impacts and theoretical investigations on the…”
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