비뉴우톤성 유체에서의 Kolmogorov Microscales

전명식; 최형진

Korean Journal of Rheology, Vol.2, No.1, 87-89, June, 1990

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비뉴우톤성 유체에서의 Kolmogorov Microscales

Kolmogorov Microscales for Non-Newtonian Fluid

전명식, 최형진

초록

n차 유체모델을 사용하여 비뉴우톤성 난류계에서 Kolmogorov microscales를 연구하였다. 뉴우톤성 유체와 2차 유체 양 모델에 대해서는 같은 미세척도 운동(small scale motion)의 dissipation energy 뿐만 아니고 Kolmogorov microscales도 같은 값으로 유도되었으나, 3차 유체모델을 사용하는 경우에는 비뉴우톤성 유체의 특성이 얻어졌다.

When the n th-order fluid model is applied to investigate the Kolmogorov microscales for the non-Newtonian turbulence system, a same dissipation of energy of small scale motion is obtained for both Newtonian and second-order fluids. For the third-order fluid, the non-Newtonian fluid characteristics are developed.

Keywords:Kolmogorov microscales/Non-Newtonian fluid/Second-order fluid model/Third-order fluid model/Turbulence

[References]

Lumley JL, Tennekes H, "A First Course in Turbulence," The MIT Press, Cambridge, p. 20 (1972)
Bird RB, Armstrong RC, Hassager O, "Dynamics of Polymeric Liquids," Vol. 1, Wiley, New York, p. 342 (1987)
Hinze JO, "Turbulence," 2nd ed., McGraw-Hill, New York, p. 224 (1975)
Jhon MS, Sekhon G, Armstrong R, The Response of Polymer Molecules in a Flow, Advances in Chemical Physics, eds., I. Prigogine and S.A. Ricc(Wiley), 66, 153 (1987)

[1] Lumley JL, Tennekes H, "A First Course in Turbulence," The MIT Press, Cambridge, p. 20 (1972)

[2] Bird RB, Armstrong RC, Hassager O, "Dynamics of Polymeric Liquids," Vol. 1, Wiley, New York, p. 342 (1987)

[3] Hinze JO, "Turbulence," 2nd ed., McGraw-Hill, New York, p. 224 (1975)

[4] Jhon MS, Sekhon G, Armstrong R, The Response of Polymer Molecules in a Flow, Advances in Chemical Physics, eds., I. Prigogine and S.A. Ricc(Wiley), 66, 153 (1987)