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| EXTENDED SELF SIM ILARITY OF PASSIVE SCALAR IN RAYLEIGH-BNARD CONVECTION FLOW BASED ON WAVELET TRANSFORM | |
| 作者姓名： | Fu Qiang Xia Keqing |
| 作者单位： | Fu Qiang 1，2) Xia Keqing 2) ( 1) College of Science，PLA University of Science and Technology Nanjing 210016，P.R.China) ( 2) Department of Physics，The Chinese University of Hong Kong，Shatian，Hong Kong，P.R.China) |
| 摘 要： | INTRODUCTIONTo fully developed turbulence flow,Kol-mogorov ( 1 941 ) define structure function of qorder,i.e.Dq( r) =〈| u( x+ r) - u( x) | q〉∝ rζ( q) ,and foundζ( q) =q3.Similar to velocityfield,for temperature T( x) by definition struc-ture function,i.e.Rq( r) =〈| T( x+ r) - T( x) | q〉∝ rξ ( q) ,Obukhov also gave out a theoreticalscaling rule ofξ( q) =q3.After the 60 's,becauseof the discovery of intermittence in turbulent ex-periment,it is well known thatζ( q) ,ξ( q)≠ q3,… |
| 关 键 词： | Rayleigh Bénard convection wavelet transform extended self similarity temperature data |
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