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Digitale Medien

Investigation and Modeling of Splashing in the Peirce Smith Converter (2008)

Hasanzadeh - Lileh Koohi, Ali ; Halali, Mohammad ; Askari, Masoud ; [weitere]

Berkeley, Calif. : Berkeley Electronic Press (now: De Gruyter)

Chemical product and process modeling 3 (2008), S. 2

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Details

ISSN: 1934-2659

Quelle: Berkeley Electronic Press Academic Journals

Thema: Chemie und Pharmazie , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung

Notizen: To investigate the factors affecting splashing in Peirce-Smith copper converters of Sarcheshmeh copper complex, South-East Iran, a laboratory scale model with dimensions one eighth of the actual converter was designed and assembled. The model was filled with water. Air was impinged onto the water. The sequence of events was subsequently recorded using high speed cameras. Factors affecting splashing such as blowing angle, volumetric flow rate of air, and the distance of the blowers from water surface were studied.Using a value of 2.65×10-11 for Morton dimensionless number, it was found that splashing may be reduced by 75% if the air speed in the tuyeres is reduced from 155 m/s to 30 m/s while the nozzle distance from the melt free surface is between 2 to 0.5 meters.

Materialart: Digitale Medien

URL: http://www.bepress.com/cppm/vol3/iss1/2

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Digitale Medien

A mixed approach to finite element analysis of hyperbolic heat conduction problems (1998)

Manzari, Mehrdad T. ; Manzari, Majid T.

Bradford : Emerald

International journal of numerical methods for heat & fluid flow 8 (1998), S. 83-96

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Details

ISSN: 0961-5539

Quelle: Emerald Fulltext Archive Database 1994-2005

Thema: Maschinenbau

Notizen: Using a non-Fourier heat conduction (NFHC) hypothesis, the governing equations of thermal wave propagation are established. The resulting differential equations are transformed to integral forms using the Galerkin weighted residual method and then are discretized by a finite element technique. The proposed finite element formulation is verified by comparing the results of analytical and numerical solutions to a number of selected 1-D problems. A couple of 2-D sample problems are solved and the responses of the system to various input signals are studied. The proposed mixed approach shows superiority to the conventional finite element solution of hyperbolic heat conduction equation, because of the simultaneous determination of heat fluxes and temperature at each nodal point. The mixed approach is also shown to be capable of capturing the sudden temperature jump due to heat pulses.