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Approximate solution to the hopf Φ equation for isotropic homogeneous fluid turbulence

Приближенное решение Ф уравнения Хопфа для изотропной однородной турбулентности жидкости

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Il Nuovo Cimento B (1971-1996)

Summary

Consistent with the observedt −n decay laws for isotropic homogeneous turbulence and the form of the longitudinal correlation functionf(r, t) for smallr, the Hopf Φ equation is shown to be satisfied approximately by an asymptotic power series int −n. This solution features a self-similar universal equilibrium functional which manifests Kolmogoroff-type scaling.

Riassunto

Coerentemente con le leggi di decadimentot −n osservate per turbolenza omogenea isotropa e con la forma della funzione di correlazione longitudinalef(r, t) perr piccolo, si mostra che l’equazione di Hopf Φ è soddisfatta approssimatamente da una serie asintotica di potenze int −n. Questa soluzione caratterizza una funzione di equilibrio universale autosimile che mostra variazione di scala del tipo di Kolmogoroff.

Резюме

В соответствии с наблюденными законами распадаt −n для изотропной однородной турбулентности и формой функцииf(r, t) для продольных корреляций при малыхr, показывается, что Ф уравнение Хопфа приблизительно удовлетворяется асимптотическим степенным рядом поt −n. Это решение характеризует самоподобный универсальный равновесный функционал, который обнаууживает скейлинг Колмогоровского типа.

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References

  1. E. Hopf:J. Rat. Mech. Anal.,1, 87 (1952);E. Hopf andE. W. Titt:J. Rat. Mech. Anal.,2, 587 (1953);G. Rosen:Phys. Fluids,3, 519, 525 (1960);I. Hosokawa:J. Math. Phys. (N. Y.),8, 221 (1967).

    MathSciNet  Google Scholar 

  2. G. K. Batchelor:Homogeneous Turbulence (New York, N. Y., 1960), p. 46, 99, 120, 134, 150.

  3. G. Rosen:Phys. Fluids,24, 558 (1981).

    Article  MathSciNet  Google Scholar 

  4. G. Rosen:Phys. Rev. A,22, 2180 (1980).

    Article  Google Scholar 

  5. G. Comte-Bellot andS. Corrsin:J. Fluid Mech.,48, 273 (1971);S. C. Ling andA. Saad:Phys. Fluids,20, 1796 (1977);F. H. Champagne:J. Fluid Mech.,86, 67 (1978);F. N. Frenkiel, P. S. Klebanoff andT. T. Huang:Phys. Fluids,22, 1606 (1979).

    Article  Google Scholar 

  6. T. Kármán andL. Howarth:Proc. R. Soc. London Ser. A,164, 192 (1938).

    Article  Google Scholar 

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This work was supported by the National Aeronautics and Space Administration grant NAG1-110.

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Rosen, G. Approximate solution to the hopf Φ equation for isotropic homogeneous fluid turbulence. Nuov Cim B 69, 169–176 (1982). https://doi.org/10.1007/BF02721249

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  • DOI: https://doi.org/10.1007/BF02721249

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