Ultrasonic Attenuations in Magnetic Fluids
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概要
- 論文の詳細を見る
Experiments of ultrasonic attenuation have been performed in a water-basedmagnetic fluid by pulse-echo method. A box-car integrator was used to measurethe change in attenuation due to an external magnetic field applied at variousangles relative to the ultrasonic propagation vector. Complicated results wereobtained when the attenuation was plotted as a function of the magnetic fieldstrength and angles. So far no existing theoretical model gives satisfactory ox-planation for these results. In this paper, we attempted to derive expressions forthe attenuation from the ferrohydrodynamical equations of Tarapov. Numericalcalculations give fairly good agreement between the theory and the experimentwith adjustable parameters.
- 社団法人日本物理学会の論文
- 1984-08-15
著者
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GOTOH Kanefusa
Research Institute for Mathematical Science,Kyoto University
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Y Chung
Department Of Physics And Astronomy Howard University
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Gotoh K
Nagoya Univ. Nagoya
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Gotoh Kanefusa
Research Institue For Mathematical Sciences University Of Kyoto
関連論文
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- The Instability of Natural Convection in a Vertical Fluid Layer in the Presence of an Adverse Temperature Gradient
- Ultrasonic Attenuations in Magnetic Fluids
- Nonlinear Stability of Parallel Flows
- The Stability of Convection between Two Parallel Vertical Walls
- Nonlinear Evolution of the Disturbance in a Natural Convection Induced in a Vertical Fluid Layer
- The Equilibrium State of the Finite Disturbance in Free Flows
- The Stability of an Unsteady Convection Between Two Parallel Vertical Planes
- Hydromagnetic Stability of Free Flows at Large Reynolds Numbers. : I. Free Boundary Layer between Two Uniform Streams
- Asymptotic Solution of the Instability Problem of Channel Flows with Antisymmetric Velocity Profile
- Inviscid Instability of Antisymmetric Flows in a Channel
- Hydromagnetic Instability of a Two-Dimensional Jet at Small Magnetic Reynolds Numbers
- The Stability of a Natural Convection between Two Parallel Vertical Planes
- Hydromagnetic Stability of Free Flows at Large Reynolds Numbers. : III. Free Boundary Layer with Small Magnetic Prandtl Number
- A Stability Condition in Parallel Flows of Small Magnetic Reynolds Number
- On the Effect of Pulsation upon the Instability of the Two-Dimensional Parallel Flow
- Hydromagnetic Stability of Free Flows at Large Reynolds Numbers. : II. Two-Dimensional Jet
- Instability of a Cellular Flow
- Secondary Convection in a Fluid between Parallel Vertical Plates of Different Temperatures
- Thermal Convecion in a Horizontal Layer of Magnetic Fluids