A211 河床付着性藻類の増殖と種間競争に関する数値計算(A-21 河川における移動床流れ(1),一般講演)

概要

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A numerical simulation model is presented to describe the primary production and the interspecific competition of filamentous and non-filamentous periphyton on the flat channel bed, in which the temporal variation of the biomass of the each kind of periphyton are estimated by the balance of primary production, immigration, respiration and detachment. A series of the numerical computations was performed under the different hydraulic conditions, and the result of the computations shows that the degree of dominance of filamentous periphyton increased with time, and the net primary production of periphyton increased as the near-bottom turbulence becomes large. These results qualitatively agree with the previous studies, and therefore the present model can predict the qualitative characteristics of the primary production and the interspecific competition of periphyton fairly well.
日本流体力学会の論文
2004-08-09