- 學位論文
貨櫃船三維興波流場之實驗研究
Experimental Three-Dimensional Wave-Making Field of Container Ship
摘要
本研究利用六隻波高計建立一三維波形量測系統用來量測拖曳水槽中船模的三維興波波形，並使用此系統量測兩艘貨櫃船RD542_0與RD542_1的三維興波波形，最後也利用所量測的波高資料計算此兩艘貨櫃船的興波阻力係數。 本研究的三維波形量測結果和計算結果比較發現兩者的資料相當吻合，只有在波峰及波谷處量測值稍低於計算值，兩艘貨櫃船的興波阻力係數雖然幾乎相同，但從不同橫向位置的波高比較圖可以發現RD542_1的艉浪低於RD542_0的艉浪，顯示消浪艉的觀念是可以降低艉浪。 本研究由量測的波高值計算興波阻力係數，發現其計算值和由阻力實驗由形狀因子所求的的興波阻力計算值的誤差約在7%以內。
並列摘要
A three-dimensional wave pattern measurement system was set up by 6 wave probes to measure the three-dimensional wave pattern generated by ship model in towing tank. The wave patterns generated by two container ship models which are RD542_0 and Rd542_1 were measured by the wave pattern measurement system. The wave making coefficients of the ship models were also calculated by the measured wave height. The measured wave patterns of the container ship models are good agreement with the calculated wave pattern except at the wave crest and trough. The amplitudes of the measured crest and trough are smaller than that of calculated. The wave-making coefficients of the RD542_0 and RD542_1 are almost the same. But the stern wave of the RD542_1 is smaller than that of the RD542_0. It shows that the wave-damping afterbody is workable. The wave-making coefficient calculated by the measured wave height has 7% error when compared with that of prohaska’s method.