02963nam a2200433 4500 20260817170855.0 130598 th eng .b10102486 AIT Thesis no. WA-79-32 Chen, Wei-chiang Autocorrelation functions and spectra of diverse flow processes Bangkok : Asian Institute of Technology, 1979 iv, 57 p. Thesis ; no. WA-79-32 A thesis submitted in partial fulfillment of requirements for the degree of master of engineering, School of Engineering and Technology Thesis (M.Eng.) - Asian Institute of Technology, 1980 The 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. Wave mechanics Suphat Vongvisessomjai, Chairperson Huynh Ngoc Phien, Co-Chairperson Selvalingam, Selvadore, Examination Committee Ret-Ser Engineering Agency (R.O.C.) Scholarship Donor Asian Institute of Technology. Thesis ; no. WA-79-32 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B22185 .b10102486 mnait s 250529 2 951012 m a s 0 mnait mnait mnarc mnait 20 40 Barcode : 30050003068789 CREATED : 1994-05-16 RECORD # : i10113472 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050003068797 CREATED : 1994-05-16 RECORD # : i10113484 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050160040019 CREATED : 2016-01-15 RECORD # : i12868309 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050121098130 CREATED : 2023-12-10 RECORD # : i13468777 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 10088 10088 0 0 0 0 MAIN MAIN mnait 2026-08-17 0 AIT Thesis no. WA-79-32 30050003068789 2026-08-17 17:08:55 1 2026-08-17 20 0 0 0 0 MAIN MAIN mnait 2026-08-17 0 AIT Thesis no. WA-79-32 30050003068797 2026-08-17 17:08:55 2 2026-08-17 20 0 0 0 0 MAIN MAIN mnarc 2026-08-17 0 AIT Thesis no. WA-79-32 30050160040019 2026-08-17 17:08:55 2026-08-17 40 0 0 0 0 MAIN MAIN mnait 2026-08-17 0 AIT Thesis no. WA-79-32 30050121098130 2026-08-17 17:08:55 3 2026-08-17 20