ELECTRICAL FLUCTUATIONS AND ENTRY FLOW INSTABILITIES DURING CAPILLARY FLOW OF ELASTIC POLYMER SOLUTIONS.

被引：0
|
作者：
Hedman, Kaj [1 ]
机构：
[1] Chalmers Univ of Technology, Dep of, Polymeric Materials, Goteborg, Swed, Chalmers Univ of Technology, Dep of Polymeric Materials, Goteborg, Swed
来源：
Chalmers Tekniska Hogskola, Doktorsavhandlingar | 1985年 / 522期
关键词：
POLYMERS; -; Solubility;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
This thesis is an experimental account of measurements of electrical fluctuations (noise) during capillary flow of polymer solutions, primarily aqueous solutions of poly(ethylene oxide). In general, the noise level increases with the flow rate. Within certain ranges of flow rate, two sets of harmonic peaks appear in the spectra. The fundamental frequency of the set that appears at lower frequencies, changes relatively little with the flow rate. The frequency components of the unstable entry flow were obtained by optical means. The noise method is shown to be a simple and powerful means of studying entry flow instabilities.
引用
收藏
相关论文
共 50 条
  • [31] THEORY OF FLOW-INDUCED FIBRIL FORMATION IN POLYMER SOLUTIONS.
    Hoffmann, John D.
    Journal of Research of the National Bureau of Standards (United States), 1979, 84 (05): : 359 - 384
  • [32] FLOW INSTABILITIES IN CAPILLARY-FLOW OF CONCENTRATED SUSPENSIONS
    YARAS, P
    KALYON, DM
    YILMAZER, U
    RHEOLOGICA ACTA, 1994, 33 (01) : 48 - 59
  • [33] ANOMALOUS EFFECTS IN LAMINAR CAPILLARY FLOW OF POLYMER SOLUTIONS
    KOZICKI, W
    PASARI, SN
    RAO, ARK
    TIU, C
    CHEMICAL ENGINEERING SCIENCE, 1970, 25 (01) : 41 - &
  • [34] Electrical noise generated during capillary flow of aqueous poly(ethylene oxide) solutions
    C. Klason
    J. Kubát
    O. Quadrat
    D. H. McQueen
    Experiments in Fluids, 1998, 24 : 110 - 117
  • [35] Effects of surfactant and salt concentrations on capillary flow and its entry flow for wormlike micelle solutions
    Takamasa Hashimoto
    Koji Kido
    Shintaro Kaki
    Takehiro Yamamoto
    Noriyasu Mori
    Rheologica Acta, 2006, 45 : 841 - 852
  • [36] Effects of surfactant and salt concentrations on capillary flow and its entry flow for wormlike micelle solutions
    Hashimoto, Takamasa
    Kido, Koji
    Kaki, Shintaro
    Yamamoto, Takehiro
    Mori, Noriyasu
    RHEOLOGICA ACTA, 2006, 45 (06) : 841 - 852
  • [37] Electrical noise generated during capillary flow of aqueous poly(ethylene oxide) solutions
    Klason, C
    Kubat, J
    Quadrat, O
    McQueen, DH
    EXPERIMENTS IN FLUIDS, 1998, 24 (02) : 110 - 117
  • [38] VISUALIZATION OF FLUID FLOW NEAR A ROTATING DISK IN DILUTE POLYMER SOLUTIONS.
    Kato, Hiroshi
    Watanabe, Keizo
    Naya, Kotaro
    1978, 21 (161): : 1618 - 1625
  • [39] Slip, concentration fluctuations, and flow instability in sheared polymer solutions
    Black, WB
    Graham, MD
    MACROMOLECULES, 2001, 34 (17) : 5731 - 5733
  • [40] EFFECTS OF CAPILLARY SHAPE ON FLOW CHARACTERISTICS AND DEGRADATION OF POLYMER SOLUTIONS
    WHITE, HS
    BELCHER, HV
    JOURNAL OF RESEARCH OF THE NATIONAL BUREAU OF STANDARDS, 1958, 60 (03): : 215 - 219
12345