Scour Below Submerged Skewed Pipeline

Mohd Yusoff, Mohd Azlan (2015) Scour Below Submerged Skewed Pipeline. ["eprint_fieldopt_thesis_type_phd" not defined] thesis, Universiti Sains Malaysia.

[img]
Preview
PDF
Download (1MB) | Preview

Abstract

Hakisan dibawah saluran paip terjadi disebabkan oleh tindakan arus sungai yang menyebabkan saluran paip terdedah kegagalan. Saluran paip merentasi sungai menganggu aliran sungai dan seterusnya menyebabkan kesan aluran yang bertindak balas dengan pusaran air di sekitar saluran paip. Dalam penyelidikan ini, beberapa ekspresimen dijalankan untuk mengkaji dari segi fizikal kesan pemasangan saluran yang dipesongkan mengikut darjah (30º, 45º, 60º dan 90º) merentasi sungai. Penyelidikan ini juga bertujuan untuk menilai GEP dan model-model regrasi sebagai salah satu medium dalam menentukan hakisan di bawah saluran paip yang dipesongkan merentasi sungai. Permulaan proses hakisan bagi kedalaman air (y/D =3) meningkat dengan mendadak. Walau bagaimanapun, bagi y/D = 4, permulaan proses hakisan adalah lebih perlahan. Local scour below submerged pipelines occurs due to the erosive and action of currents which cause pipeline failure. The presence of pipe across river initiates the piping effect combined with the stagnation eddy and vortex system undermine the pipeline and mark the onset of scour. The main objective of the research is to investigate the physics of scour below pipeline in river crossing as well as its factor associated. In this study, experiments were conducted to investigate the effect of four different pipeline angles (30º, 45º, 60º and 90º) across a channel.

Item Type: Thesis (["eprint_fieldopt_thesis_type_phd" not defined])
Subjects: T Technology > TN Mining Engineering. Metallurgy > TN1-997 Mining engineering. Metallurgy
Divisions: Kampus Kejuruteraan (Engineering Campus) > Pusat Pengajian Kejuruteraan Bahan & Sumber Mineral (School of Material & Mineral Resource Engineering) > Thesis
Depositing User: Mr Firdaus Mohamad
Date Deposited: 18 Aug 2016 03:20
Last Modified: 17 May 2018 03:12
URI: http://eprints.usm.my/id/eprint/30372

Actions (login required)

View Item View Item
Share