Measurement and analysis of fractal dimensions for round turbulent jets

黄真理; 李玉梁; 余常昭

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Measurement and analysis of fractal dimensions for round turbulent jets

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＜正＞ By combining the measurement of fractal dimension with the digital image processing technique, the fractal dimension measured with the so-called "box-counting" method is found to be rather small. A modified "box-counting" method is proposed and then used for the PLIF images of round turbulent jets. It has been shown that （i） the scaling regime of jets spans roughly between the integral and dissipation length scales; and （ii） the fractal dimension, which increases with the jet path, can characterize the properties of the regions of turbulent jet, with a sudden jump at X/d0≈6 （about the end of the jet core）.

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《自然科学进展（英文版）》 |1995年第4期||共页
作者
黄真理; 李玉梁; 余常昭;
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作者单位

Hydraulic Department;

Tsinghua University;

Beijing 100084;

China Executive Office of State Council Three Gorges Project Construction Committee;

Beijing 100044;

China.;

Hydraulic Department;

Tsinghua University;

Beijing 100084;

China;

Hydraulic Department;

Tsinghua U;

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原文格式 PDF
正文语种 chi
中图分类物理测量;
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Measurement and analysis of fractal dimensions for round turbulent jets

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