Fluid-Flow Characteristics and Critical Phenomenon in a Bottom Blowing Bath

2011 ◽  
Vol 402 ◽  
pp. 365-370
Author(s):  
Jie Min Zhou ◽  
Qiang Gao ◽  
Liu Liu ◽  
Fang Kan Liu ◽  
Hong Jie Yan
Keyword(s):  
Critical Phenomenon ◽  
Bubble Formation ◽  
Flow Characteristics ◽  
Water Model ◽  
Air Masses ◽  
Bottom Blowing ◽  
Bubble Rising ◽  
Fluid Flow Characteristics ◽  
Bubble Rising Velocity ◽  
Immersion Nozzle

Water model experiments were carried out to understand the behavior of the bubble formation near the immersion nozzle, bubble rising velocity in the liquid. The critical state appeared when Fr number changed from 5 to 6 was described. The character of the critical phenomenon was whether the evident separation between two continuous bubbles or air masses appeared.

Optimization of Weir & Dam with Drain Holes in Continuous Casting Slab Tundish

2012 ◽  
Vol 476-478 ◽  
pp. 293-301 ◽  
Author(s):  
Chao Chen ◽  
Guo Guang Cheng ◽  
Hai Bo Sun ◽  
Xin Chao Wang ◽  
Jia Quan Zhang
Keyword(s):  
Fluid Flow ◽  
Continuous Casting ◽  
Plug Flow ◽  
Flow Characteristics ◽  
Surface Flow ◽  
Water Model ◽  
Near Surface ◽  
Continuous Casting Slab ◽  
Flow Through ◽  
Fluid Flow Characteristics

The optimization of the location and height of weir & dam with drain holes in a single-strand continuous casting tundish was carried out from the view of fluid flow characteristics by physical modeling using a 0.4 scaled water model and mathematical modeling study. Considering simultaneously reducing the remaining melt, maximizing the plug flow and avoiding the short circuited flow, the dam with two upwardly inclined drain holes was optimized. The parameters such as location and height of weir & dam Lw/L, Ld/L, Hw/H and Hd/H are important to fluid flow in tundish. Among them, the location and height of dam were more critical to the overall fluid flow in tundish. The gap between weir and dam was also very important, the gap length that smaller than 0.266 will be preferred. The dead region behind the weir was enlarged and the tracer flow through the drain holes of dam was weakened as increasing the gap of weir and dam. In present study, the parameters of the optimized Case7 are Hw/H 0.448 (162/362), Hd/H 0.718 (260/362), Lw/L 0.4 (480/1200) and Ld/L 0.667 (800/1200). For the fluid flow field, the near surface flow which beneficial to inclusions removal existed both above the dam and through the upwardly inclined drain holes. While the case of bottom grooved dam used may lead to short circuited flow through the grooves.

Numerical study of influence of casting speed on fluid flow characteristics in the four strand tundish

2021 ◽  
Author(s):  
Kridsanapong Boonpen ◽  
Pruet Kowitwarangkul ◽  
Patiparn Ninpetch ◽  
Nadnapang Phophichit ◽  
Piyapat Chuchuay ◽  
...  
Keyword(s):  
Fluid Flow ◽  
Casting Speed ◽  
Numerical Study ◽  
Flow Characteristics ◽  
Fluid Flow Characteristics
Sign in / Sign up

Export Citation Format

Share Document