3 edition of Submerged gas injection into liquids in cylindrical vessels found in the catalog.
Submerged gas injection into liquids in cylindrical vessels
Thesis (M.A.Sc.)--University of Toronto, 1993.
|Series||Canadian theses = Thèses canadiennes|
|The Physical Object|
|Pagination||2 microfiches : negative.|
Chemical injection systems typically consist of multiple chemical services with associated single or multi-compartment storage tanks or pressure vessels. The chemicals are transferred from the tank to the injection point by means of chemical injection pumps, while flow rates can be adjusted locally or remotely in order to ensure that theFile Size: 1MB. Gasses are also stored in spheres. Likewise, gas cylinders usually have domed ends. High Pressure gas storage containers have the same problem a soap bubble has, to maximize volume with minimum.
The Importance of Viscous and Interfacial Forces in the Hydrodynamics of the Top-Submerged-Lance Furnace. Top-Submerged-Lance gas injection into a liquid bath. cylindrical vessel, in the. Numerical modelling of free surface flows in metallurgical vessels bubble rise in a liquid bath, and top-submerged gas injection. The numerical predictions are in good agreement with the.
Pressure Vessels Cylindrical or spherical pressure vessels (e.g., hydraulic cylinders, gun barrels, pipes, boilers and tanks) are commonly used in industry to carry both liquid s and gases under pressure. When the pressure vessel is exposed to this pressure, the materialFile Size: KB. Pressure is the result of compacting the molecules of a fluid into a smaller space than it would otherwise occupy. Pressure is the force per unit area acting on a surface. The unit of pressure is the N/m2 and this is called a PASCAL. The Pascal is a small unit of pressure so higher multiples are common. 1 kPa = N/m2 1 MPa = N/m2File Size: KB.
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Increasing the submerged lance depth could increase the fuming rate. In order to compare the calculation results of using different turbulence model on a top submerged gas injection into a high viscosity liquid, the present authors (Wang et al., ) performed 2D and 3D simulations with a combined VOF-RNG/RSM/LES model.
The simulation was Author: Yannan Wang, Lingling Cao, Maarten Vanierschot, Zhongfu Cheng, Bart Blanpain, Muxing Guo. submerged gas jet in a bath. In doing so, vertical air injection into a cylindrical vessel was used to examine the effect of the hydrodynamic parameters of a top gas injection system on the mixing process in the liquid bath.
These parameters included gas injection rate, the level of lance submergence, swirlinon-swirl flow and bath depth. In , Valencia et al. have numerically studied splashing by air injection through a tuyere into water within a cylindrical vessel. They have implemented the numerical simulations in the commercial software Fluent, involving a complex 3D bifasic turbulent flow slice model.
becomeslonger and the gas-liquid interfacial area in-creases. Analternative methodis to apply a rotary lance for the gas injection. Arotary gas injector has beenusedfor aluminium refining,6) in which argon andchlorine gases weredispersed into the melt through animmersedrotor.
The rotor was madein a form of disc with several transverse orifices for the gas injection. The main at. Fluid flow phenomena in a cylindrical bath stirred by a top submerged lance (TSL) gas injection was investigated by using the computational fluid dynamic (CFD) modeling technique for an isothermal air–water system.
The multiphase flow simulation, based on the Euler–Euler approach, elucidated the effect of swirl and nonswirl flow inside the by: Simulation of gas injection into liquid melts: M. Schwarz Figure 1. Simplified cylindrical geometry used for discussion of gas injection.
Second, the phenomena occurring in the bath change depending on the flow rate of gas injection, the mode of gas injection, the bath depth, etc. For very low gas flow. The submerged helium injection process results in the heat and mass transfer between the helium bubble and the cryogenic liquid.
The objective of this paper is to analyze the dynamics of the heat and mass transfer by: 4. Fluid flow phenomena in a cylindrical bath stirred by a top submerged lance (TSL) gas injection was investigated by using the computational fluid dynamic (CFD) modeling technique for an isothermal air-water by: with the fundamental aspects of gasinjection into liquids (e.g., see Refs.
6) through 13)). Indeed, the volume of literature on the subject of "gas injection into liquids" is so hugethat summarising every study would appear to be beyondthe scope of any single up to-date review.
Asummaryof research workon the important andspe-cific applications File Size: 3MB. Free surfaces of large bubbles are involved in gas injection into liquid through a top-submerged lance. The Volume of Fluid (VOF) multiphase model is chosen to simulate these flows.
However, the selection of an appropriate turbulence model remains a point of by: 6. Wave motion modelling Injection of gas into a bath of liquid can cause a wave or oscillation to be set up in the body of liquid, and this 5.
Simulation of surface swelling As indicated diagrammatically in Figure 1, the surface of the bath swells in the region where the plume reaches the by: A fundamental aspect of submerged powder injection into melts which is not well understood is the extent to which the particles separate from the carrier gas upon injection, particularly under high solids loading conditions.
In this study, the injection of nonwettable powders was investigated using a cold-model system at solids loadings from 1 to Cited by: 6. drugs added to anesthetic solutions that constrict blood vessels around the injection site, reducing the blood flow in the area.
Wells, Horace () Connecticut dentist who was the first to use nitrous oxide as an anesthetic during dental surgery. Abstract. Experimental results are reported for submerged injection pressurization and expulsion tests of a m 3 liquid hydrogen tank.
The pressurant injector was positioned near the bottom of the test vessel to simulate liquid engulfment of the pressurant gas inlet; a condition that may occur in low-gravity by: 5. Also disclosed is a lance for submerged injection of gas into a liquid pyrometallurgical bath comprising a duct for flow of gas longitudinally through the lance characterized in that the outer wall of the duct is defined by an elongate tube constituting an outer wall of the lance and there is gas flow swirler means within the tube to impart.
A hydrodynamic model of submerged gas injection systems and their effects on liquid metal stirring is presented. It is argued that hydrodynamic conditions at the nozzle, tuyere, or plug are not critical to flow recirculation produced in large cylindrical vessels(i.e., furnaces or Cited by: The simulated pressure signal inside the lance for the injection of air into water at m/s.
The glycerol solution is simulated with the same average gas inlet velocity of m/s. Fig. 15 shows frames of the fluid topology in the cylindrical vessel at selected times after the commencement of gas by: Fluid flow phenomena in a cylindrical bath stirred by a top submerged lance (TSL) gas injection was investigated by using the computational fluid dynamic (CFD) modeling technique for an isothermal air-water system.
The multiphase flow simulation, based on the Euler-Euler approach, elucidated the effect of swirl and nonswirl flow inside the bath. A model experiment of a submerged gas injection system in a cylindrical vessel under the influence of a rotating magnetic field and its effect on liquid metal mixing is presented.
Argon gas is injected through a nozzle into a column of the eutectic alloy GaInSn, which is liquid at room by: 6. The effect of partial confinement on the shape and volume of bubbles generated by injection of a constant flow rate of gas into a very viscous liquid is studied numerically and experimentally.
Numerical solutions of the Stokes equations for the liquid and the evolution equation for the surface of a bubble, and experiments with two different liquids, show that cylindrical Cited by: 7. Fluid flow phenomena in a cylindrical bath stirred by a top submerged lance (TSL) gas injection was investigated by using the computational fluid dynamic (CFD) modeling technique for an isothermal air–water system.
The multiphase flow simulation, based on the Euler–Euler approach, elucidated the effect of swirl and nonswirl flow inside the.Submerged injection of gas into a thin liquid sheet.
Detachment of a bubble anchored to a vertical cylindrical surface in quiescent liquid and grid generated turbulence. Modelling local bubble size distributions in agitated vessels. Chemical Engineering Science62 (3), DOI: / Cited by: Abstract.
A hydrodynamic model of submerged gas injection systems and their effects on liquid metal stirring is presented. It is argued that hydrodynamic conditions at the nozzle, tuyere, or plug are not critical to flow recirculation produced in large cylindrical vessels(i.e., furnaces or ladles).An analysis of a buoyancy driven plume generated through gas injection shows that gas Cited by: