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008 951012s1982 th uzm rtt 00| a1eng d
035 _a.b10066408
099 9 _aAIT Thesis no. CA-82-5
100 1 _aMadurasinghe, M. Arachchige Dananjaya
245 1 0 _aAlgorithms for experimental estimates of eddy diffusivities
260 _aBangkok :
_bAsian Institute of Technology,
_c1982
300 _av, 17 p.
490 1 _aThesis ;
_vno. CA-82-5
500 _a A thesis submitted in partial fulfilment of the requirement for the degree of Master of Science, School of Engineering and Technology
502 _aThesis (M.Sc.) - Asian Institute of Technology, 1982
520 _aThis study investigates possible algorithms for the determination of eddy diffusivities in fluids and gases, employing naturally present periodic heating processes. These algorithms follow reasoning first developed by Angstrom in a study. of the determination ยท of diffusivities in metal bar.s. Angstrom's model involved only one dimensional bodies; this study extends these algorithms to higher dimensions. Seas of rectangular shapes are considered, where heating by the sun or tidal action are the mechanisms which cause periodic changes in the temperature. The solutions to the corresponding differential equations are obtained. At selected points, amplitudes and phase shifts of the temperature variations which are assumed to be available data for this research, are expressed in terms of the diffusivity coefficients. This leads to a system of transcendental equations with the diffusivities as unknowns.
650 0 _aTurbulent diffusion (Meteorology)
650 0 _aAlgorithms
700 1 _aRadok, Rainer,
_eChairperson
700 0 _aSuphat Vongvisessomjai,
_eExamination Committee
700 1 _aLohani, Bindu N.,
_eExamination Committee
710 2 _aGovernment of Japan,
_eScholarship Donor
810 2 _aAsian Institute of Technology.
_tThesis ;
_vno. CA-82-5
856 _3Full-Text
_uhttp://203.159.5.9/ait-thesis/detail.php?q=B21148
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