Prediction of Hydrodynamic Characteristics of Quarter Circular Breakwater Using Stepwise Regression

Abstract

Quarter Circular Breakwater (QBW) is emerging as a new topic of research for port engineers worldwide, with a special emphasis on its hydrodynamic performance characteristics. QBW is a new type of breakwater based on the principles of Semicircular breakwater (SBW). The present paper discusses the development of prediction models for the coefficient of transmission of QBW using MATLAB based stepwise regression approach. Data used for the modeling was obtained from experiments conducted on scaled downed physical models of QBW in the regular wave flume available at the Marine Structures laboratory of the Department of Applied Mechanics and Hydraulics, National Institute of Technology Karnataka (NITK), Surathkal in India. Using the stepwise method to perform a multi-linear regression of the transmission coefficient (K t ), a relation was established in terms of independent parameters such as wave height (H), wave period (T) and depth of water (d).