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Experimental study of aerodynamic processes inside the iron of a twisting-drawing frame

  • Machines And Equipment
  • Published:
Fibre Chemistry Aims and scope

Abstract

Free convective flow of air is the basic gas flow in the iron of a twisting—drawing frame. If special measures are not instituted, this flow separates from the heating surface approximately in the middle of the iron due to the convex shape of the heating surface of the iron. Primary evaporation of oiling agent takes place in the lower part of the iron where the fibre diameter has already decreased significantly. Mixing of oiling agent vapors and air affects the efficiency of operation of the drawing system, Mixing is potentiated near the region of separation of free convective flow due to turbulization of air flow. The method of internal suction in the upper part of the iron prolongs separation of free convective air flow from the surface of the heating element, potentiates mixing of oiling agent vapors, and improves the efficiency of operation of the local exhaust system by approximately one order of magnitude. Preliminary turbulization of the air flow as a result of setting a hydrodynamic brake in the air inlet in the iron improves the efficiency of the local exhaust system by approximately two times, with all other conditions being equal, due to improved mixing of oiling agent vapors and air.

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References

  1. G. N. Abramovich, Theory of Turbulent Jets [in Russian], Nauka, Moscow (1989).

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Authors
  1. A. V. Vlasov
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  2. G. V. Dashkov
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  3. A. D. Solodukhin
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  4. S. P. Fisenko
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Additional information

Institute of Heat and Mass Transfer, Belorus Academy of Sciences. Translated from Khimicheskie Volokna, No. 4, pp. 56–59, July–August, 1995.

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Vlasov, A.V., Dashkov, G.V., Solodukhin, A.D. et al. Experimental study of aerodynamic processes inside the iron of a twisting-drawing frame. Fibre Chem 27, 290–294 (1996). https://doi.org/10.1007/BF00572812

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  • DOI: https://doi.org/10.1007/BF00572812

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