2001 Fiscal Year Final Research Report Summary
Unsteady Heat Transfer and Fluid Mechanism at Melt-Front Region with Injection Molding with High Polymer Materials
| Project/Area Number |
12650200
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
Thermal engineering
|
|---|
| Research Institution | Gifu University |
|---|
Principal Investigator |
MIMATSU Junji Gifu University, Engineering, Associate Professor, 工学部, 助教授 (20202351)
|
|---|
| Project Period (FY) |
2000 – 2001
|
| Keywords | Melting High-Polymer / Melt-Front / Injection Molding / Unsteady heat Transfer and fluid / Heat Transfer Mechanism / Non-Newtonian / Visualization of Velocity / 3D Image Analysis |
|---|
| Research Abstract |
In the melting process of high-polymer materials on the industrial advantage, there are several characteristic behaviors in the flow and heat transfer field in depends on its non-newtonian properties and non-liner temperature dependencies. These flow and heat transfer behaviors become more important recently to keep and control engineering quality and speed in the material processing. For the modeling of heat-fluid phenomena, the experimental investigation of the melting high-polymer flow has been done with various method measurements for getting the time-special flow and heat transfer properties and its unsteady effects.
In this study, the unsteady flow and heat transfer phenomena in melt-front of high-polymer are shown experimentally with visualization images analysis and multi-point unsteady measurements. The unsteady geographic shape of the gas-liquid interface and velocity vector field in melt-front region, which make important effects on whole flow and heat transfer field, are det
… More
ected for making clear the heat-fluid 3-D phenomena from the continuous images by high-speed video system. The unsteady and local efficiencies of the shape configuration on interface are analyzed numerically by cross-correlation between various positions for the detection of the transitional phenomena.
The high-polymer materials ( PP ) are put into the cylindrical tube with many solid original short bars, hi the tube, flie material changes its phase aspect in transit by electric heaters. The melting fluid gets pushed out into the glass tube ( test section: various types ) from the nozzle by a piston moved with controllable stepping motor. The surfaces of tube are set normal and artificial conditions with thin-layer of silicon oil for comparison. The velocity conditions at exit are changed as the moving velocity of pushed piston for making clear its effects.
From experimental results, several interesting phenomena were detected as below. The gas-liquid interface changes its shape properties time-dependently, and the two-way transitions of phenomena are detected with the local configuration analysis, which mean that one is from the center to wall ( fountain flow ), another is from near-wall to center by non-uniform slipping phenomena near-wall. Heat transfers in melt-front are also changed and correlated with the above phenomena. These phenomena originated in high-polymer properties can be made needful of building the heat transfer mechanism models on numerical simulations. Less
|
Research Products
(19 results)
-
-
-
-
-
-
-
-
-
-
-
-
-
[Publications] Endo,K., Takeshita,T., Kasai,H., Sasaki,Y., Tanaka,N., Asano,H., Kikuchi,K., Yamada,M., Chen,M., O'Shea,J.J. and Sugamura,K.: "STAM2, a new member of the STAM family, binding to the Janus kinases"FEBS Letters. 477. 55-61 (2000)
Description
「研究成果報告書概要(欧文)」より
-
[Publications] Miura,S., Takeshita,T., Kimura,Y., Kasai,H., Murata,K., Sasaki,Y., Asao,H., Hanami,J-I., Beppu,H., Tsukazaki,T., Wrana,J.L., Miyazono,K. and Sugamura,K.: "Hgs( Hrs ), a FYVE domain protein, is involved in Smad signaling through cooperation with SARA"Mol. Cell. Biol.. 20. 9346-9355 (2000)
Description
「研究成果報告書概要(欧文)」より
-
[Publications] Kumaki,S., Ishi,N., Minegishi,M., Ohashi,Y., Hakozaki,I., Nonoyama,S., Imai,K., Morio,T., Tsuge,I., Sakiyama,Y., Miyanoshita,A., Miura,Ji., Mayumi,M., Heike,T., Katamura,K., Takada,H., Izumi,I., Kamizono,J., Hibi,S., Sasaki,H., Kimura,M., Kikuta,A., Date,Y., Sako,M., Tanaka,H., Sano,K. and Sugamura,K.: "Characterization of the gammac chain among 27 unrelated Japanese patients with X-linked severe combined immunodeficiency ( X-SCID )"Hum. Genet.. 107. 406-408 (2000)
Description
「研究成果報告書概要(欧文)」より
-
[Publications] Kikuchi,K., Kawasaki,Y., Ishi,N., Sasaki,Y., Asao,H., Takeshita,T., Miyoshi,I., Kasai,N. and Sugamura,K.: "Suppression of thymic development by the dominant-negative form of Gads"Int Immunol. 13. 777-783 (2001)
Description
「研究成果報告書概要(欧文)」より
-
[Publications] Yamada,M., Takeshita,T., Miura,S., Murata,K., Kimura,Y., Ishii,N., Nose,M., Sakagami,H., Kondo,H., Tashiro,F., Miyazaki,J., Sasaki,H. and Suganuma,K.: "Loss of hippocampal CA3 pyramidal neurons in mice lacking STAM1"Mol. Cell. Biol.. 21. 3807-3819 (2001)
Description
「研究成果報告書概要(欧文)」より
-
[Publications] Asao,H, Okuyama,C., Kumaki,S., Ishii,N., Tsuchiya,S., Foster,D. and Sugamura,K.: "The common γ-chian is an indispensable subunit of the IL-21 receptor complex"J. Immunol.. 167. 1-5 (2001)
Description
「研究成果報告書概要(欧文)」より
-
[Publications] Ishi,N., Owada,Y., Yamada,M., Miura,S., Murata,K., Asao,H., Kondo,H. and Suganuma,K.: "Loss of neurons in the hippocampus and cerebral cortex of AMSH-deficient Mice"Mol. Cell. Biol.. 21. 8626-8637 (2001)
Description
「研究成果報告書概要(欧文)」より
