WAKE WASH OF A FAST SMALL BOAT IN RESTRICTED WATERS:MODEL TESTS AND FULL-SCALE MEASUREMENTS

Brodogradnja

article

Rashidi, Ahmad Hadi Mohamed¹  Azhary, Wan Ahmad Hafiz Wan Mohd¹  Samion, Mohd Kamarul Huda²  Bachok, Andiknurdiyana³  Ahmad, Badruzzaman³  Ahmad, Nur Shafira³  Ismail, Mohd Arif³  Shaharuddin, Nik Mohd Ridzuan⁴  Yaakob, Omar⁵  Jamal, Mohamad Hidayat⁶  Adnan, Faizul Amri⁴ 

[1] Centre for Coastal and Oceanography Studies, National Hydraulic Research Institute of Malaysia;Hydraulic & Instrumentation Laboratory, National Hydraulic Research Institute of Malaysia;School of Mechanical Engineering, Faculty of Engineering, Universiti Teknologi Malaysia;School of Mechanical Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 UTM Skudai, Johor Malaysia, b. Marine Technology Center ,(MTC), Universiti Teknologi Malaysia;Marine Technology Center ,(MTC), Universiti Teknologi Malaysia;School of Civil Engineering, Faculty of Engineering, Universiti Teknologi Malaysia

关键词: Boat generated waves;    Boat Wake Analysis;    Wave attenuation;    Waveenergy;   

DOI  :  10.21278/brod73206

学科分类：工程和技术（综合）

来源: Brodarski Institut

【 摘 要 】

This paper presents the model testing of an 8.23m boat with hard chine planning hullgenerated waves at the Kilim recreational park. Wake is considered one of the main causes ofriverbank erosion due to the energy carried by waves hitting the riverbank. Initially, shipparticulars were measured from actual boats to generate a hull form using MAXSURF software.A lines plan was then generated to fabricate the model using fibreglass. Experiments wereconducted in the National Hydraulic Research Institute of Malaysia (NAHRIM) at variousspeeds at a constant operating draft. The wave patterns generated by the modelled boats atdifferent speeds were recorded for analysis. Wave attenuation for deep water conditions wasstudied and it was found that the wave exponent, n ranged from -0.36 to -0.75 for all depthFroude number (Fnh) condition. Wave decay analysis was used to estimate wave height fordefined water depth. For 11 people with an average mass of 65 kg on board, the produced waveheight was greater than the permissible wave wake height of 75 mm. The generated energyexceeded 60 Joules/m for nearly all measured speeds. A boat speed of less than 5 knots wassuggested for boats loaded with the maximum passenger limit of 11 people. Otherrecommendations were made to minimize the wave wake height produced by the modelledboat.

【 授权许可】

CC BY