Gas-stirred ladles

Mazumdar D, Guthrie RIL (1995) The Physical and mathematical modelling of gas stirred ladle systems. ISU Int 35 1-20... [Pg.42]

Mazumdar D, Das S, Bajpayee S (1997) A comparative study of mixing phenomena in gas stirred ladle systems. ISIJ Int 37(2) 194-196... [Pg.222]

Zhu M, Sawada I, Yamasaki NY, Hsiao T (1996) Numerical simulation of three-dimensional fluid flow and mixing process in gas-stirred ladles. ISIJ Int 36 503-511... [Pg.222]

The mathematical models describing fluid motion in gas-stirred ladle systems can... [Pg.308]

Although the / — turbulence model has been applied extensively [1,2,44, 61] for modeling fluid flow in gas-stirred ladle systems, some fluid model studies [50] indicate that the / — model cannot accurately simulate the distribution of various turbulence parameters in the gas-stirred system. Despite this, it is demonstrated that the — model has been reasonably successful in predicting the bulk liquid flows as these are largely dominated by inertial rather than turbulence viscous forces. It is important to note here that the inadequacy of the A — model to simulate turbulence in the gas-stirred reactors has been attributed to the quasi-single-phase modeling technique [40], since exact two-phase computational procedures have been shown to produce fairly accurate estimates of turbulence parameters in the system. [Pg.316]

In gas-stirred ladle systems, an average effective viscosity model [23,43,44] or a differential model of turbulence (i.e. A — model) is typically employed to calculate the distribution of flow variables and turbulence parameters within the systems. It has often been argued that since such ladle flows are dominated by inertial (rather than turbulence viscous) forces, the effective viscosity value is likely to play only a secondary role in affecting the overall generated flow patterns. Thus, despite their simplicity, algebraic models of effective viscosity have been reasonably successful for realistic prediction of ladle hydrodynamics. [Pg.317]

Figure 9.1 illustrates a typical gas-stirred ladle [7]. The two phases are separated by sharp (but flexible) boundaries and are immiscible. There are thus two averaged densities and velocities. The phases are assumed to share space in proportion to their existence probabilities or volume fraction so as to satisfy the total continuity relation ... [Pg.320]

Park and Yang [38] analyzed mixing in two types of gas-stirred ladle systems namely, a conventional cylindrical vessel and a through-flow configuration, by employing a Eulerian-Lagrangian two-phase model. The performance of two turbulent models, the model and the Reynolds stress models, were compared. [Pg.322]

Kim SH, Fruehan RJ (1987) Physical modeling of hquid/liquid mass transfer in gas stirred ladles. Metall Trans B 18B 381-390... [Pg.332]

Mazumdar Nakajima HD, Guthrie RIL (1988) Possible roles of upper slag phases on the fluid dynamics of gas stirred ladles. Metall Trans 19B 507/11... [Pg.333]

Woo JS, Szekely J, CastUlejos E AH, Brimacombe JK (1990) A study on the mathematical modeling of turbulent redrculating flow in gas-stirred ladles. MetaU Trans B 218 269-277... [Pg.333]

Pan SM, Ho YH, Hwang WS (1997) Three-dimensional fluid flow model for gas stirred ladles. J Mater Eng Perform 6 625-635... [Pg.334]

Park HJ, Yang WJ (1997) Turbulent two-phase mixing in gas-stirred ladle systems for continuous casting applications. Numer Heat Transf A 31 493-515... [Pg.334]

Castillejos EAH, Salcudean ME, Brimacome JK (1989) Fluid flow and bath temperature desertification in gas-stirred ladles. MetaU Trans B 208 603-611... [Pg.334]

Balaji D, Mazumdar D (1991) Numerical computation of flow in gas-stirred ladle systems. Steel Res 62(1) 16-24... [Pg.334]

Mazumdar D (1989) On effective viscosity models for gas-stirred ladle systems. Metall Trans B 20B 967-969... [Pg.335]

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