Premium
Water modelling study of the jet characteristics in a continuous casting mould
Author(s) -
Gupta Dharmendra,
Lahiri Amit Kumar
Publication year - 1992
Publication title -
steel research
Language(s) - English
Resource type - Journals
eISSN - 1869-344X
pISSN - 0177-4832
DOI - 10.1002/srin.199200499
Subject(s) - nozzle , jet (fluid) , spinning , mechanics , entrainment (biomusicology) , materials science , physics , optics , thermodynamics , composite material , acoustics , rhythm
The jet characteristics and the fluid flow pattern in a continuous slab caster have been studied using a water model. The fluid jet is studied under free fall and submerged discharge conditions. In the latter case, the jet was followed by dye‐injection technique and image analyser was used to find out the effect of nozzle parameters on jet‐spread angle, jet‐discharge angle and the volume entrainment by the jet. All free‐fall jets with nozzle port angle zero and upward are found to be spinning. Some of the free‐fall jets with downward nozzle‐port angle are found to be spinning and rest are smooth. The spinning direction of the jets are found to change with time. The well depth, port diameter and the inner diameter of the nozzle have a clear effect on the free‐fall jets with downward port angle. The jet‐spread angle is found to be about 17° for smooth jets. The spread angle for spinning jet increases as the nozzle‐port angle is increased from downward 25 to upward 15°. The jet‐discharge angle is always downward even when the nozzle‐discharge ports are angled upward. The extent of volume entrainment by the spinning jet is higher and it increases as the nozzle‐port angle is increased from 25 downward to 15° upward.