Fibre Chemistry

, Volume 19, Issue 5, pp 330–333 | Cite as

Isometric nonsteady flow of a viscoelastic liquid in a spinneret capillary

  • V. P. Pervadchuk
  • V. K. Krainov
  • V. I. Yankov
Chemistry And Technology Of Man-Made Fibres
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Conclusions

Nonsteady flow of a viscoelastic liquid which obeys the DeWitt rheological equation in the capillary of a spinneret for spinning man-made fibres has been studied.

It has been found that the flow regimes for a polymeric liquid with constant pressure drop and with constant flow rate differ sharply in their character. In the first case, the flow rate of liquid fluctuates with time from plus to minus values; in the second, the pressure drop in the liquid increases monotonically. A fluctuating process for the profiles of lengthwise liquid velocities unifies the two cases of flow.

Keywords

Polymer Pressure Drop Constant Pressure Constant Flow Nonsteady Flow 

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Copyright information

© Plenum Publishing Corporation 1988

Authors and Affiliations

  • V. P. Pervadchuk
  • V. K. Krainov
  • V. I. Yankov

There are no affiliations available

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