1996 Fiscal Year Final Research Report Summary
Enhanced convection by application a magnetic field
| Project/Area Number |
07650902
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
化学工学一般
|
|---|
| Research Institution | KYUSHU UNIVERSITY |
|---|
Principal Investigator |
OZOE Hiroyuki Institute of Advanced Material Study, Kyushu Univ.Professor, 機能物質科学研究所, 教授 (10033242)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
IWAMOTO Mitsuo Oita, Univ.Eng.Instractor, 工学部, 講師 (80232718)
|
|---|
| Project Period (FY) |
1995 – 1996
|
| Keywords | Natural Convection / magnetic field / Liquid metal / Enhancement of heat transfer |
|---|
| Research Abstract |
The application of the external magnetic field with the direction in a horizontal and parallel to the heated wall in a cubic enclosure was studied numerically. When there is no magnetic field, the natural convection was oscillatory and strong three-dimensional flow. When uniform magnetic field wes applied, the average Nusselt nember increased about 5% at Ha=50 and Ra=10^5, and 9% at Ha=100 and Ra=10^6. This enhancement was accompanied by a flow rectifying effect into a two-dimensional flow. This was explained theoretically by the electric current profile. These theoretical findings were subsequently proved experimentally for a cubic enclosure of 6.4 cm long with liquid gallium.
The temperature oscillation of InSb was also measured in a Czchralski crystal growing system which is expected to serve as basic data for the magnetic Czochralski crystal growing system in future.
|
