Now showing items 48-54 of 54

    • Temperature Rise in a Verging Annular Die 

      Younes, Georges R.; Giacomin, A. Jeffrey; Gilbert, Peter H. (2015-12-07)
      Plastic pipes, tubes or catheters are extruded by pressure‑driven flows through annular dies. Whereas die lands are straight, the section connecting the die land to the extruder either converges or diverges, converging ...
    • Thermodynamic Instability of Polymeric Liquids in Large-Amplitude Oscillatory Shear Flow from Corotational Maxwell Fluid 

      Saengow, Chaimongkol; Giacomin, A. Jeffrey (2018-04)
      When polymeric liquids are subjected to oscillatory shear flow, if the amplitude of the shear rate is high enough, the shear stress response will become aperiodic. This has been variously attributed to fracture, common ...
    • Transport Phenomena in Eccentric Cylindrical Coordinates 

      Gilbert, Peter H.; Saengow, Chaimongkol; Giacomin, A. Jeffrey (2016-09)
      Studies in transport phenomena have been limited to a select few coordinate systems. Specifically, Cartesian, cylindrical, spherical, Dijksman toroidal, and bipolar cylindrical coordinates have been the primary focus of ...
    • Unidirectional Large-Amplitude Oscillatory Shear Flow of Human Blood 

      Saengow, Chaimongkol; Giacomin, A. Jeffrey; Dimitrov, Andrea S. (2019-09)
      Blood is non-Newtonian suspension of red and white cells, platelets, fibrinogen and cholesterols in Newtonian plasma. To assess its non-Newtonian behaviors, this work considers a newly proposed blood test, unidirectional ...
    • Van Gurp-Palmen Relations for Long-Chain Branching From General Rigid Bead-Rod Theory 

      Kanso, Mona A.; Giacomin, A. Jeffrey (2020-02)
      Empirically, we find that parametric plots of mechanical loss angle versus complex shear modulus may depend neither on temperature [van Gurp and Palmen, Rheol Bull (SoR), 67, 5 (1998)], nor on average molecular weight ...
    • Wall Slip Heating 

      Gilbert, Peter H.; Giacomin, A. Jeffrey (2015-01-05)
      When molten plastic is extruded, the upper limiting throughput is often dictated by fine irregular distortions of the extrudate surface. Called sharkskin melt fracture, plastics engineers spike plastics formulations with ...
    • πάντα ῥεῖ (Everything Flows): Motto for Rheology 

      Beris, Antony N.; Giacomin, A. Jeffrey (2014-05-23)
      This historical study deepens the rheologist’s understanding of the motto of The Society of Rheology, of its history, and of its many typographies. The motto “πάντα ῥεῖ” is not verbatim something written or said by the ...