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Experimental Investigation of the Hydrodynamic Characteristics of a Ship due to Bank Effect
Anh Khoa Vo,Thi Loan Mai,전명준,윤현규 한국항해항만학회 2022 한국항해항만학회지 Vol.46 No.2
When a ship moves in the proximity of the lateral bank, bank suction forces are generated due to bank effects. Thus, hydrodynamic forces can significantly impact the ship’s maneuverability and navigation safety. In this study, model tests were performed to investigate the hydrodynamic forces exerted on a ship, especially suction forces caused by bank effects, using captive model and bank effect tests. A low-speed condition was selected in this study, because of the perilous situation as the ship moves close to the bank. The accuracy of the hydrodynamic forces exerted on the hull was verified, by comparing the results of the static drift test with the results obtained from other institutes at design speed. The straight simulation caused by bank effects was then implemented using estimated hydrodynamic coefficients.
Pham Vo Anh Khoa(팜버안코아),Lee, Kihak(이기학) 한국콘크리트학회 2021 한국콘크리트학회 학술대회 논문집 Vol.33 No.2
In this study, the prediction and validation of flexural response of fiber reinforced geopolymer composites are investigated by experiment and machine learning approaches. The input variables, including fly ash and slag content, liquid/solid ratio, curing temperature, curing time, volume fraction, length and diameter of fibers as well as tensile strength of fiber, were used to train and validate the predicted and actual flexural strength. The proposed models artificial neural network ANN, deep neural network DNN and ResNet were successfully trained to predict and analyze the flexural strength with the highly accuracy.