船舶通風の流体力学的研究(第3報)

概要

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In our third report we studied ventilation with the cargo holds filled with bale cargo.As a result of the studies covered in our first, second and this third report, we have reached the following conclusions : (1) In the event that the holds are filled with grain cargo, the stream lines and stream velocities in the upper air space may be obtained by hydrodynamical calculations.(2) In the event that the hold is empty or filled with bale cargo, the inlet current becomes a jet flow. By utilizing this jet flow efficiently the ventilation efficiency is increased.(3) By leading the inlet current by ducts into the air spaces between the bale cargo, the ventilation efficiency can be inceased.(4) By alternating inlets and outlets at regular intervals large changes can be obtained in the stational flow, and as dead space can thereby eliminated, the ventilation efficiency is increased enormously.(5) By experiments with actual ships it has been possible to confirm that the model experiments are useful in determining the characteristic properties of ventilation efficiency.
社団法人日本船舶海洋工学会の論文