Journal of engineering physics

, Volume 35, Issue 5, pp 1343–1347 | Cite as

Nonisothermal flow of anomalously viscous liquids in the channels of screw extruders

  • V. P. Pervadchuk
  • V. I. Yankov


The nonisothermal flow of an anomalously viscous liquid in the channel of a screw extruder is analyzed with allowance for the influence of the side walls. A comparison with experimental data is given.


Experimental Data Statistical Physic Side Wall Viscous Liquid Screw Extruder 
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x, y, z, xi, xj

Cartesian coordinates


height of channel


width of channel

L and S

lengths of the screw and of the channel


pitch of the helical line


velocity of the upper plate; i, j=1, 2, 3

wx, wy, wz

dimensionless velocities of the liquid

vx, vy, vz, vi, vj

true velocities of liquid particles


pressure gradient


bulk flow rate of the product








components of the stress tensor


second (quadratic) invariant of the tensor of deformation velocities

C and λ

specific heat and thermal conductivity of the liquid


density of the liquid

α1 and α2

heat-exchange coefficients

C0 and C1

thermophysical constants

η0, n,β, TH

rheological constants


liquid temperature at the screw inlet


Reynolds number


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Literature cited

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Copyright information

© Plenum Publishing Corporation 1979

Authors and Affiliations

  • V. P. Pervadchuk
    • 1
    • 2
  • V. I. Yankov
    • 1
    • 2
  1. 1.Perm Polytechnic InstituteUSSR
  2. 2.All-Union Scientific-Research Institute of Synthetic FibersKalinin

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