TY  - SER
AU  - Madurasinghe,M.Arachchige Dananjaya
AU  - Radok,Rainer
AU  - Suphat Vongvisessomjai, 
AU  - Lohani,Bindu N.
ED  - Government of Japan, 
TI  - Algorithms for experimental estimates of eddy diffusivities
T2  - Thesis
PY  - 1982///
CY  - Bangkok
PB  - Asian Institute of Technology
KW  - Turbulent diffusion (Meteorology)
KW  - Algorithms
N1  -  A thesis submitted in partial fulfilment of the requirement for the degree of Master of Science, School of Engineering and Technology; Thesis (M.Sc.) - Asian Institute of Technology, 1982
N2  - This 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 · 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.
UR  - http://203.159.5.9/ait-thesis/detail.php?q=B21148
ER  -