Title:
FLOW STATE ESTIMATION METHOD FOR MOLTEN STEEL, FLOW STATE ESTIMATION DEVICE, ONLINE DISPLAY DEVICE FOR FLOW STATE OF MOLTEN STEEL, AND CONTINUOUS CASTING METHOD FOR STEEL
Document Type and Number:
Japanese Patent JP2019177421
Kind Code:
A
Abstract:
To provide a flow state estimation method for molten steel, an online display device for a flow state of molten steel, and a continuous casting method for steel such that the flow state of molten steel can be estimate online in three dimensions entirely in a mold.SOLUTION: A flow state estimation method for molten steel includes: a flow velocity distribution calculation step of using a nonstationary turbulent flow model to calculate a flow velocity distribution of the molten steel; a temperature distribution calculation step of calculating a temperature distribution of the molten steel from the flow velocity distribution of the molten steel; an external force variation-time temperature distribution calculation step; a sensitivity analysis step; and an external force variation quantity calculation step. In a flow velocity distribution calculation step of a next time step, a variation quantity of external force calculated in the external force variation quantity calculation step is added to the external force used in the flow velocity distribution calculation step to obtain new external force, and the nonstationary turbulent flow model is used to calculate a flow velocity distribution of the molten steel again, thus estimating a flow state of the molten steel in every time step.SELECTED DRAWING: Figure 10
Inventors:
HASHIMOTO YOSHIYA
TSUDA KAZUTOMO
MATSUI AKITOSHI
TSUDA KAZUTOMO
MATSUI AKITOSHI
Application Number:
JP2019123058A
Publication Date:
October 17, 2019
Filing Date:
July 01, 2019
Export Citation:
Assignee:
JFE STEEL CORP
International Classes:
B22D46/00; B22D11/04
Domestic Patent References:
| JP2016016414A | 2016-02-01 | |||
| JP2014036999A | 2014-02-27 | |||
| JP2001239353A | 2001-09-04 | |||
| JP2003001386A | 2003-01-07 | |||
| JP2011251308A | 2011-12-15 | |||
| JP2002096147A | 2002-04-02 | |||
| JP2003136207A | 2003-05-14 |
Attorney, Agent or Firm:
Sakai International Patent Office