On the Improvement of Blockage Correction and Wall Effects of Ship Model Resistance Test

  • 張 奕峰

Student thesis: Master's Thesis


We improve the experimental techniques of main ship model test and promote the accuracy of results We also do the researches on blockage effect and shallow water effect in ship model test and blockage correction The steel cable method of resistance test was established by Chen (2014) and was improved for the reliability and repeatability by Wu (2015) After having the high repeatability resistance test data we can consider the wall effects This thesis followed the ITTC recommendation to do the correction of blockage effect and find out the most suitable blockage correction for NCKU towing tank The further research on modifying blockage correction for NCKU towing tank is needed In three different kinds of blockage correctors from ITTC (2011) Schuster’s method is more suitable for NCKU towing tank Because Schuster’s method is based on mean flow theory which considered free-surface effect We also make progress on Schuster’s method and include shallow water effect to make new blockage corrector which comments both velocity and resistance
Date of Award2017 Aug 28
Original languageEnglish
SupervisorJeng-Horng Chen (Supervisor)

Cite this