水中における各種嚢網の抵抗について-VI

概要

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The hydrodynamic resistance of cod-ends of various types with 30% shortening of towing net (Table 1) was measured experimentally. The results were compared with theoretical values which had been given by some formulae on the resistance obtained in the previous reports1, 2) of this series. So far as the present series of model experiments have concerned (towing speed is in the range 0.1-2.5m/sec), the resistance of each net increased proportionately with 1.7-1.9 power of towing speed and its maximum variation among models was showed about twice as large as both results of theory and the previous experiment2) of net without shortening (Table 2 and Fig. 2). And the drag-coefficient of netting twine of these nets were nearly coincide with that of infinite circular cylinder (Fig. 1).
公益社団法人日本水産学会の論文