Plastic properties of pitch-coke compositions

Кравцова, Е. Д.; Гильдебрандт, Э. М.; Фризоргер, В. К.

doi:10.3103/s1067821209020072

Cited by 7 publications

(1 citation statement)

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“…We shall consider weakly nonlinear flows discarding (M 3 ) terms in all expansions and confining of terms to be considered to include µ 0 or µ 1 . The resulting model equations will account therefore for the combined effects of nonlinearity, attenuation, and thermal conductivity.…”

Section: Dynamic Equations In a Bingham Plastic Fluidmentioning

confidence: 99%

Acoustic heating produced in the thermoviscous flow of a Bingham plastic

Perelomova¹

2010

Open Physics

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Abstract:This study is devoted to the instantaneous acoustic heating of a Bingham plastic. The model of the Bingham plastic's viscous stress tensor includes the yield stress along with the shear viscosity, which differentiates a Bingham plastic from a viscous Newtonian fluid. A special linear combination of the conservation equations in differential form makes it possible to reduce all acoustic terms in the linear part of of the final equation governing acoustic heating, and to retain those belonging to the thermal mode. The nonlinear terms of the final equation are a result of interaction between sounds and the thermal mode. In the field of intense sound, the resulting nonlinear acoustic terms form a driving force for the heating. The final governing dynamic equation of the thermal mode is valid in a weakly nonlinear flow. It is instantaneous, and does not imply that sounds be periodic. The equations governing the dynamics of both sounds and the thermal mode depend on sign of the shear rate. An example of the propagation of a bipolar initially acoustic pulse and the evolution of the heating induced by it is illustrated and discussed. PACS

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Section: Dynamic Equations In a Bingham Plastic Fluidmentioning

confidence: 99%

Acoustic heating produced in the thermoviscous flow of a Bingham plastic

Perelomova¹

2010

Open Physics

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Effect of fine coke particles on rheological properties of the binder matrix of carbon anodes in aluminium production process

et al. 2021

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Aluminium production through the Hall-Héroult process relies on an extensive use of carbon anodes, which are originally made of coal tar pitch and fine and coarse carbon particles. During the forming process of green anodes, the mixture of the fine particles and the coal-tar pitch (i.e., the binder matrix) moves between the coarse particles and produces a uniform agglomerated paste. The efficiency of the forming process directly affects the final quality of the baked anode and consequently the efficiency of the Hall-Héroult process. The rheological properties of the binder matrix play a crucial role in the forming process. In this study, rotation and oscillation tests are used to study the effects of the fine particle concentration and temperature on the viscoelastic properties of the binder matrix. The

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