Study on the "Steadiness" of Flame Spreading of Electric Wires : Verification of Dominant Factor for Melting and Gasification Processes during Cable Fires
| Project/Area Number |
21681022
|
|---|
| Research Category |
Grant-in-Aid for Young Scientists (A)
|
| Allocation Type | Single-year Grants |
|---|
| Research Field |
Social systems engineering/Safety system
|
|---|
| Research Institution | Hokkaido University |
|---|
Principal Investigator |
NAKAMURA Yuji 北海道大学, 大学院・工学研究院, 准教授 (50303657)
|
|---|
| Project Period (FY) |
2009 – 2011
|
| Project Status |
Completed (Fiscal Year 2011)
|
| Budget Amount *help |
¥25,870,000 (Direct Cost: ¥19,900,000、Indirect Cost: ¥5,970,000)
Fiscal Year 2011: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
Fiscal Year 2010: ¥8,190,000 (Direct Cost: ¥6,300,000、Indirect Cost: ¥1,890,000)
Fiscal Year 2009: ¥11,830,000 (Direct Cost: ¥9,100,000、Indirect Cost: ¥2,730,000)
|
|---|
| Keywords | 電気火災 / 火炎燃え拡がり / 溶融ポリマー / 燃え拡がり速度 / 低圧火災 / 理論解析 |
|---|
| Research Abstract |
Steadiness of flame spread over electric wire has been studied experimentally as well as numerically(theoretically). With precise visualization and temperature measurement of wire during the flame spreading event, it is understood what is the mechanism to lead the unsteadiness and what is the condition to reach steadiness of the system. To verify this consideration, Pe-. correlation has been proposed and the verification is fulfilled. Applicability of B-number theory to describe wire combustion character was ensured via microflame study. Direct numerical simulation methodology was developed based on VOF method and enthalpy-porosity method and the precise prediction of growing event of heated molten polymer was successfully accomplished.
|
Report
(4 results)
Research Products
(52 results)
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
[Presentation] Novel Approach of Space Fire Research : Utilizing Low Pressure to Simulate Microgravity Fire2010
Author(s)
Iwakami, J., Nakamura, Y., Wakatsuki, K., Ito, H., and Fujita, O.
Organizer
Proc. 8th Japan-China-Korea Workshop on Microgravity Sciences for Asian Microgravity Pre-symposium
Place of Presentation
Sendai, Japan
Related Report
-
-
-
[Presentation] Experimental Study of Flame Spread over Electric Cables at Low Pressure2010
Author(s)
Nakamura, Y., Azumaya, K., Wakatsuki, K., Ito, H., and Fujita, O.
Organizer
Sixth International Seminar on Fire and Explosion Hazards
Place of Presentation
Leeds, UK
Related Report
-
-
-
-
-
[Presentation] Effect of Wire Scales on Spread Behavior in Sub-atmospheric Pressure2009
Author(s)
Nakamura, Y., Azumaya, K., Wakatsuki, K., Ito, H., and Fujita, O.
Organizer
6th International Symposium on Scale Modeling(ISSM-6)
Place of Presentation
Hawaii, USA
Related Report
-
-
-
-
-
-
-
-
-
-
-
