Fluid flow phenomena in a single phase coreless induction furnace

1985 ◽  
Vol 16 (2) ◽  
pp. 227-235 ◽  
Author(s):  
Ch. Vivès ◽  
R. Ricou
Keyword(s):  
Fluid Flow ◽  
Single Phase ◽  
Induction Furnace ◽  
Flow Phenomena ◽  
Coreless Induction Furnace

scholarly journals Single-Phase Heat Transfer and Fluid Flow Phenomena of Microchannel Heat Exchangers

10.5772/32989 ◽  
2012 ◽  
Author(s):  
Thanhtrung Dang ◽  
Jyh-tong Teng ◽  
Jiann-cherng Chu ◽  
Tingting Xu ◽  
Suyi Huang ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Fluid Flow ◽  
Heat Exchangers ◽  
Single Phase ◽  
Flow Phenomena

scholarly journals The turbulent recirculating flow field in a coreless induction furnace, a comparison of theoretical predictions with measurements

1983 ◽  
Vol 133 ◽  
pp. 37-46 ◽  
Author(s):  
N. El-Kaddah ◽  
J. Szekely
Keyword(s):  
Fluid Flow ◽  
Flow Field ◽  
Force Field ◽  
Body Force ◽  
Induction Furnace ◽  
Stokes Equations ◽  
Measurement Techniques ◽  
Mathematical Representation ◽  
Recirculating Flow ◽  
Coreless Induction Furnace

A mathematical representation has been developed for the electromagnetic force field and the fluid-flow field in a coreless induction furnace. The fluid flow field was represented by writing the axisymmetric turbulent Navier–Stokes equations, containing the electromagnetic body-force term. The electromagnetic body force field was calculated by using a technique of mutual inductances. The k-ε model was employed for evaluating the turbulent viscosity, and the resultant differential equations were solved numerically.The theoretically predicted velocity fields were in reasonably good agreement with the experimental measurements reported by Hunt & Moore; furthermore, the agreement regarding the turbulence intensities was essentially quantitative. These results indicate the k-ε model does provide a good engineering representation of the turbulent recirculating flows occurring in induction furnaces. At this stage it is not clear whether the discrepancies between measurements and the predictions, which were not very great in any case, are attributable either to the model or to the measurement techniques employed.

An extended Krylov subspace method to simulate single-phase fluid flow phenomena in axisymmetric and anisotropic porous media

2003 ◽  
Vol 40 (3-4) ◽  
pp. 121-144 ◽  
Author(s):  
Faruk O. Alpak ◽  
Carlos Torres-Verdı́n ◽  
Kamy Sepehrnoori ◽  
Sheng Fang ◽  
Leonid Knizhnerman
Keyword(s):  
Porous Media ◽  
Fluid Flow ◽  
Single Phase ◽  
Krylov Subspace ◽  
Krylov Subspace Method ◽  
Subspace Method ◽  
Anisotropic Porous Media ◽  
Flow Phenomena ◽  
Phase Fluid

scholarly journals THE WATERSHED-METAMODELING WITH SURFACE AND SUBSURFACE COUPLED FLUID-FLOW PHENOMENA

2012 ◽  
Vol 68 (4) ◽  
pp. I_583-I_588
Author(s):  
Koji MORI ◽  
Yoshio TANI ◽  
Kazuhiro TADA ◽  
Kenji NAKAO ◽  
Hiroyuki TOSAKA
Keyword(s):  
Fluid Flow ◽  
Flow Phenomena

Computational Fluid Dynamics Study of New Vacuum Degassing Process

2009 ◽  
Vol 4 (3) ◽  
Author(s):  
Manas Kumar Mondal ◽  
Govind Sharan Gupta ◽  
Shin-ya Kitamura ◽  
Nobuhiro Maruoka
Keyword(s):  
Fluid Flow ◽  
Gas Flow ◽  
Low Carbon Steel ◽  
Momentum Balance ◽  
Low Carbon ◽  
Decarburization Rate ◽  
Vacuum Degassing ◽  
Liquid Phases ◽  
New Process ◽  
Flow Phenomena

Recently, the demand of the steel having superior chemical and physical properties has increased for which the content of carbon must be in ultra low range. There are many processes which can produce low carbon steel such as tank degasser and RH (Rheinstahl-Heraeus) processes. It has been claimed that using a new process, called REDA (Revolutionary Degassing Activator), one can achieve the carbon content below 10ppm in less time. REDA process, in terms of installment cost, is in between the tank degasser and RH processes. As such, REDA process has not been studied thoroughly. Fluid flow phenomena affect the decarburization rate the most besides the chemical reaction rate. Therefore, momentum balance equations along with k-? turbulent model have been solved for gas and liquid phases in two-dimension (2D) for REDA process. The fluid flow phenomena have been studied in details for this process by varying gas flow rate, depth of immersed snorkel in the steel, diameter of the snorkel and change in vacuum pressure. It is found that the design of the snorkel affects the melt circulation of the bath significantly.

The Role of Fluid Flow Phenomena in the Czochralski Growth of Oxides.

1981 ◽  
Vol 9 ◽  
Author(s):  
D.C. Miller
Keyword(s):  
Fluid Flow ◽  
Defect Density ◽  
Major Effect ◽  
Czochralski Growth ◽  
Simulation Experiments ◽  
Direct Measurements ◽  
Flow Geometry ◽  
Flow Phenomena

ABSTRACTIn the Czochralski growth of single crystals from large melts, fluid flow phenomena have a major effect on interface shape, growth striations, defect density and the length of crystals which can be grown from a melt of given volume and thermal geometry. Because of the technical difficulties encountered in making direct measurements in molten oxides, simulation experiments have been extensively utilized to gain insight into melt behavior.Both temperature profile and flow geometry results from simulation experiments are discussed. This data is supported by direct melt observations and results from the characterization of grown crystals. When reviewed together, this information offers new insights into the complex behavior of Czochralski growth processes, including the role of thermal gradients, crystal rotation, and surface tension driven (Marangoni) convection.

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