Abstract
Effects of magnetic field on the characteristics of boiling two-phase pipe flow of temperature-sensitive magnetic fluid are clarified in detail both theoretically and experimentally. Firstly, governing equations of two-phase magnetic fluid flow based on the thermal nonequilibrium two-fluid model are presented and numerically solved considering evaporation and condensation between gas- and liquid-phases. Next, behaviour of vapor bubbles is visualized with ultrasonic echo in the region of nonuniform magnetic field. This is recorded and processed with an image processor. As a result, the distributions of void fraction in the two-phase flow are obtained. Furthermore, detailed characteristics of the two-phase magnetic fluid flow are investigated using a small test loop of the new energy conversion system. From the numerical and experimental results, it is known that the precise control of the boiling two-phase flow and bubble generation is possible by using the nonuniform magnetic field effectively. These fundamental studies on the characteristics of two-phase magnetic fluid flow will contribute to the development of the new energy conversion system using a gas-liquid boiling two-phase flow of magnetic fluid.
Original language | English |
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Pages (from-to) | 157-165 |
Number of pages | 9 |
Journal | Transactions of the Japan Society of Mechanical Engineers Series B |
Volume | 61 |
Issue number | 581 |
DOIs | |
Publication status | Published - 1995 |
Externally published | Yes |
Keywords
- Boiling
- Bubble
- Energy Conversion
- Flow Visualization
- Laser
- Magnetic Fluid
- Multi-phase Flow
- Non-equilibrium Flow
- Supersonic Wave
- Void Fraction
ASJC Scopus subject areas
- Condensed Matter Physics
- Mechanical Engineering