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ITS » Paper and Presentation » Teknik Manajemen Pantai - S2 Posted by dee@its.ac.id at 13/11/2014 19:04:57 • 1528 Views
STUDY ON MODELLING BEDLOAD SEDIMENT TRANSPORT BY IRREGULAR WAVES THEORY VS LABORATORY EXPERIMENT
Author : FAHMI, MUHAMMAD YUNAN ( 4112205004 )
ABSTRAK
Studi tentang transportasi sedimen telah banyak dilakukan dalam berbagai
kondisi dan diperbarui oleh para peneliti sebelumnya. Paper ini berisi tentang
laporan hasil eksperimen transportasi sedimen yang dilakukan dalam keadaan
gelombang irregular. Bagaimanapun untuk mengetahui pengaruh spektrum
gelombang dan parameter lain terhadap transportasi sedimen penting untuk
memulai dari water surface elevation yang ditransformasikan ke dalam kecepatan
orbital kemudian ke tegangan geser. Eksperimen dilakukan di wave flume tank
laboratorium lingkungan dan energi laut jurusan Teknik Kelautan ITS
menggunakan spektrum JONSWAP dengan beberapa variasi tinggi gelombang
dan periode. Ada dua metode yang digunakan dalam penelitian ini untuk
menghitung tegangan geser dasar dan satu formula menghitung laju transportasi
sedimen. Dari hasil eksperimen dan perhitungan yang telah dilakukan dapat
disimpulkan bahwa formulasi bedload sediment transport yang ada masih kurang
sesuai jika dibandingkan dengan hasil eksperimen nilai R2 0218 dan 0248.
ABSTRACT
Study about sediment transport has been done by many researchers in any
conditions and been renewed. This paper provide a report about experiment
conducted by irregular waves. However the free stream velocity profile needed
as input to other formulas computed from water surface elevation. The
transformation from water surface elevation to free stream velocity is done by
fourier decomposition. The experiment done in a wave flume tank in Laboratoy
of Environmental and Energy Ocean Engineering Department ITS using a
JONSWAP wave spectrum with many variations in wave period and wave height.
There are two methods used in this experiment to calculate bottom shear stress
and one formula to calculate bedload sediment transport. From the calculation we
can conclude that the formula still irrelevant with the experimental result with
the determination coefficient R2 is 0218 and 0248.
Keywords:
Bedload; Sediment; Gelombang irregular
Subject
: Sedimentologi; Gelombang laut
Contributor
Suntoyo, ST., M. Eng., Ph. D
DR. Eng. Muhammad Zikra, ST., M. Sc
Date Create
: 29/01/2014
Type
: Text
Format
: pdf
Language
: Indonesian
Identifier
: ITS-paper-41121140006244
Collection ID
: 41121140006244
Call Number
: RTKe 551.303 Fah s
Source Paper and Presentation of Naval Architechture and Ship Building Engineering, RTKe 551.303 Fah s, 2014
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