Inhibition of the formation mechanism for two-phase flow conflux vortex entrapment shock vibration ladle slag View Homepage


Ontology type: schema:MonetaryGrant     


Grant Info

YEARS

2009-2012

FUNDING AMOUNT

200000 CNY

ABSTRACT

Inhibition of ladle slag technology is of great significance to steel continuous casting production. Aiming at the problem that the recognition accuracy of the slab - down slag technology is low and the debugging time is long, a method of studying the mechanism of the vibration of the swirl slag of two - phase flow is proposed. According to the principle of fluid similarity, combined with the embedded technology, we set up the water model experiment platform for the process of slagging, and provide experimental guarantee for the research of this project. Based on the theory of Langmu potential vorticity, a single-phase self-fluid is established by the confluent vortex dynamics model. Under the ideal conditions, the vortex penetration critical condition is obtained. Combining viscous fluid stability theory, the axial disturbance parameters are introduced to study the confining vortex formation under critical conditions Of the fluid vibration characteristics. On the basis of this, a two-phase flow vortex dynamic model for the ladle slagging process is established. The interaction between the two-phase flow and the process of the impact vibration are studied. The essential relation between the vortex slag process and its nonlinear vibration signal is obtained. And to solve the forced vibration response of the nozzle casing under the impact of the vortex impact, and finally to establish a new theoretical system for the formation mechanism and characteristics of the two-phase flow vortex slab. This project can provide a useful reference for the research on the process of vortex slag, which can provide a direct basis for the vibration suppression ladle slag technology and has good scientific research value More... »

URL

http://npd.nsfc.gov.cn/projectDetail.action?pid=50905163

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