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035 _a.b10102486
099 9 _aAIT Thesis no. WA-79-32
100 1 _aChen, Wei-chiang
245 1 0 _aAutocorrelation functions and spectra of diverse flow processes
260 _aBangkok :
_bAsian Institute of Technology,
_c1979
300 _aiv, 57 p.
490 1 _aThesis ;
_vno. WA-79-32
500 _aA thesis submitted in partial fulfillment of requirements for the degree of master of engineering, School of Engineering and Technology
502 _aThesis (M.Eng.) - Asian Institute of Technology, 1980
520 _aThe spectrum defines the distribution of energy with frequency and is useful for engineeri.ng design purposes. Frequency spectral function is obtained through the computations of Fourier transform of autocorrelation function. The autocorrelation function is a formulated representation of a random fluctuation process by the application of statistical theory. Six types of autocorrelation functions and the corresponding spectral functions are mathematically and graphically investigated in this study. After having analyzed and compared their characteristics, it is concluded that: (1) Spectrum of fluid flow (air and water) fits to type III with F - f-2 ; (2) Spectrum of unsteady flow due to tidal current fits to type V with F - f - 2 ; and (3) Spectrum of water surface fluctuation due to wave motion or spectrum of streamflow with peak values fits to types V and VI.
650 0 _aWave mechanics
700 0 _aSuphat Vongvisessomjai,
_eChairperson
700 1 _aHuynh Ngoc Phien,
_eCo-Chairperson
700 1 _aSelvalingam, Selvadore,
_eExamination Committee
710 2 _aRet-Ser Engineering Agency (R.O.C.)
_eScholarship Donor
810 2 _aAsian Institute of Technology.
_tThesis ;
_vno. WA-79-32
856 _3Full-Text
_uhttp://203.159.5.9/ait-thesis/detail.php?q=B22185
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