碩士 / 國立臺灣海洋大學 / 河海工程學系 / 92 / For this experiment study was to simulate when the container ship maneuvered near a dock’s quay wall, the container ship’s propeller induced efflux flow eroded the soil of foundation of quay wall. These experiment model was used a ratio of(1/30) of the container ship with six blades and it was focused on the different distances between quay wall and the container ship’s propeller. For investigating before the container ship moved and the propeller efflux induced the erosion of bed.
These experiments comprised two factors；one was the propeller efflux velocity measured, and it measured for at different rotational speeds to discuss the relationship between the propeller efflux and the distances from the quay wall, and for comparing to the propeller efflux when at the free boundary. For the propeller efflux velocity measurement, it measured by a zone of flow establishment and a zone of established to profile the velocity distribution, to compare with the theoretical values, and to analyze a relation between the propeller efflux velocity and the distances of the quay wall.
One was measured the scour depths of propeller efflux；for recording by foreign scientific literature , it had directly relationship between the bed scour and the distances from the propeller to the quay wall. Using the 2 times and 3 times propeller diameter distances from the container ship’s propeller to the quay wall , we measured the bed scour profile after driving the propeller to 10 min、20min、30min、60min and 120min for comprehending the different conditions about the bed scour. And it was conferred the relationship between the scour depth and distribution with the distances of the container ship’s propeller from the quay wall.
Keyword：propeller, velocity, scour
| Identifer | oai:union.ndltd.org:TW/092NTOU5192069 |
| Date | January 2004 |
| Creators | Chih-Kai Shieh, 謝智凱 |
| Contributors | 臧效義 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 113 |
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