Backscattering from small-scale breaking wave turbulence structure generated by FLUENT

doi:10.1088/1674-1056/23/12/124101

›› 2014, Vol. 23 ›› Issue (12): 124101-124101.doi: 10.1088/1674-1056/23/12/124101

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇下一篇

Backscattering from small-scale breaking wave turbulence structure generated by FLUENT

罗根, 张民

School of Physics and Optoelectronic Engineering, Xidian University, Xi'an 710071, China

收稿日期:2014-03-25 修回日期:2014-05-22 出版日期:2014-12-15 发布日期:2014-12-15
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 61372004 and 41306188), the Fundamental Research Funds for the Central Universities, China (Grant No. K 5051207015), and the Foundation of the Science and Technology on Electromagnetic Scattering Laboratory, China (Grant No. HX0113071414).

Backscattering from small-scale breaking wave turbulence structure generated by FLUENT

Luo Gen (罗根), Zhang Min (张民)

School of Physics and Optoelectronic Engineering, Xidian University, Xi'an 710071, China

Received:2014-03-25 Revised:2014-05-22 Online:2014-12-15 Published:2014-12-15
Contact: Zhang Min E-mail:mzhang@mail.xidian.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 61372004 and 41306188), the Fundamental Research Funds for the Central Universities, China (Grant No. K 5051207015), and the Foundation of the Science and Technology on Electromagnetic Scattering Laboratory, China (Grant No. HX0113071414).

摘要/Abstract

摘要： A breaking wave can exert a great influence on the electromagnetic (EM) scattering result from sea surfaces. In this paper, the process of small-scale wave breaking is simulated by the commercial computational fluid dynamics (CFD) software FLUENT, and the backscattering radar cross section (RCS) of the turbulence structure after breaking is calculated with the method of moments. The scattering results can reflect the turbulent intensities of the wave profiles and can indicate high polarization ratios at moderate incident angles, which should be attributed to the incoherent backscatter from surface disturbance of turbulence structure. Compared with the wave profile before breaking, the turbulence structure has no obvious geometrical characteristic of a plunging breaker, and no sea spikes are present at large incident angles either. In summary, the study of EM scattering from turbulence structure can provide a basis to explain the anomalies of EM scattering from sea surfaces and help us understand the scattering mechanism about the breaking wave more completely.

关键词: FLUENT, turbulence structure, EM scattering, high polarization ratios

Abstract: A breaking wave can exert a great influence on the electromagnetic (EM) scattering result from sea surfaces. In this paper, the process of small-scale wave breaking is simulated by the commercial computational fluid dynamics (CFD) software FLUENT, and the backscattering radar cross section (RCS) of the turbulence structure after breaking is calculated with the method of moments. The scattering results can reflect the turbulent intensities of the wave profiles and can indicate high polarization ratios at moderate incident angles, which should be attributed to the incoherent backscatter from surface disturbance of turbulence structure. Compared with the wave profile before breaking, the turbulence structure has no obvious geometrical characteristic of a plunging breaker, and no sea spikes are present at large incident angles either. In summary, the study of EM scattering from turbulence structure can provide a basis to explain the anomalies of EM scattering from sea surfaces and help us understand the scattering mechanism about the breaking wave more completely.

Key words: FLUENT, turbulence structure, EM scattering, high polarization ratios

中图分类号: (Electromagnetic wave propagation; radiowave propagation)

41.20.Jb

41.20.-q (Applied classical electromagnetism) 47.27.E- (Turbulence simulation and modeling)

罗根, 张民. Backscattering from small-scale breaking wave turbulence structure generated by FLUENT[J]. , 2014, 23(12): 124101-124101.

Luo Gen (罗根), Zhang Min (张民). Backscattering from small-scale breaking wave turbulence structure generated by FLUENT[J]. Chin. Phys. B, 2014, 23(12): 124101-124101.

参考文献 0


[1]	Wright J W 1968 IEEE Trans. Anten. Propag. AP-16 217

[2]	Mouche A A, Chapron B and Reul N 2007 Waves in Random and Complex Media 17 321 doi: 10.1080/17455030701230261

[3]	Nie D and Zhang M 2010 Chin. Phys. B 19 074101

[4]	Zhang Y D and Wu Z S 2002 Chin. Phys. Lett. 19 666 doi: 10.1088/0256-307X/19/5/318

[5]	Liu Y, Frasier S and McIntosh R 1998 IEEE Trans. Anten. Propag. 46 27 doi: 10.1109/8.655448

[6]	Hwang P A, Sletten M A and Toporkov J V 2008 J. Geophys. Res. 113 C02003

[7]	Jessup A T, Keller W C and Melville W K 1990 J. Geophys. Res. 95 9679 doi: 10.1029/JC095iC06p09679

[8]	Jessup A T and Melville W K 1991 J. Geophys. Res. 96 20547 doi: 10.1029/91JC01993

[9]	Kalmykov A I and Pustovoytenko V V 1976 J. Geophys. Res. 81 1960 doi: 10.1029/JC081i012p01960

[10]	Lyzenga D R, Maffett A L and Shuchman R A 1983 IEEE Trans. Geosci. Remote Sens. GE-21 502

[11]	Kudryavtsev V, Hauser D, Caudal G and Chapron B 2003 J. Geophys. Res. 108 FET 2-1

[12]	Holliday D, DeRaad L L and St-Cyr G J 1998 IEEE Trans. Anten. Propag. 46 108 doi: 10.1109/8.655457

[13]	West J C 2002 IEEE Trans. Geosci. Remote Sens. 40 523 doi: 10.1109/36.992830

[14]	West J C and Zhao Z Q 2002 IEEE Trans. Geosci. Remote Sens. 40 583 doi: 10.1109/TGRS.2002.1000318

[15]	Liu Y, Wei E B, Hong J L and Ge Y 2006 Chin. Phys. 15 2175 doi: 10.1088/1009-1963/15/9/045

[16]	Liang Y and Guo L X 2009 Acta Phys. Sin. 58 6158 (in Chinese)

[17]	Sambe A N, Sous D, Golay F, Fraunie P and Marcer R 2011 Eur. J. Mech. B: Fluids 30 577 doi: 10.1016/j.euromechflu.2011.03.002

[18]	Lubin P, Glockner S, Kimmoun O and Branger H 2011 Eur. J. Mech. B: Fluids 30 552 doi: 10.1016/j.euromechflu.2011.01.001

[19]	Lakehal D and Liovic P 2011 J. Fluid Mech. 674 522 doi: 10.1017/jfm.2011.3

[20]	Fujimura A, Soloviev A and Kudryavtsev V 2010 IEEE Geosci. Remote Sens. Lett. 7 646 doi: 10.1109/LGRS.2010.2043920

[21]	2006 Fluent User's Guide (Fluent Inc. Lebanon NH)

[22]	Toporkov J V, Marchand R T and Brown G S 1998 IEEE Trans. Anten. Propag. 46 150 doi: 10.1109/8.655462

[23]	An Y Y, Wang D X and Chen R S 2013 Electromagnetics 33 10 doi: 10.1080/02726343.2013.751006

[24]	An Y Y and Chen R S 2012 Appl. Comput. Electromag. 27 541

[25]	Tsang L, Kong J A and Ding K H 2001 Scattering of Electromagnetic Waves (New York: John Wiley & Sons Inc.) p. 119

[26]	Toporkov J V and Brown G S 2002 IEEE Trans. Anten. Propag. 50 417 doi: 10.1109/TAP.2002.1003376

[27]	Ericson E A, Lyzenga D R and Walker D T 1999 J. Geophys. Res. 104 29679 doi: 10.1029/1999JC900223

[28]	Walker D T, Lyzenga D R, Ericson E A and Lund D E 1996 Proc. R. Soc. London, Ser. A 452 1953 doi: 10.1098/rspa.1996.0104

Backscattering from small-scale breaking wave turbulence structure generated by FLUENT

Backscattering from small-scale breaking wave turbulence structure generated by FLUENT

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