Analisis Vibrasi Subsea Pipeline Akibat Aliran Internal Dan Eksternal Disisi Nubi Field Total E&P Indonesie

Chamelia, Dirta Marina (2009) Analisis Vibrasi Subsea Pipeline Akibat Aliran Internal Dan Eksternal Disisi Nubi Field Total E&P Indonesie. Other thesis, Institut Teknologi Sepuluh November.

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Abstract

Arus dan aliran internal fluida yang disebabkan oleh vibrasi pada dog leg dan sistem perpipaan penyalur gas Total E&P Indonesie di dasar muara sungai Mahakam telah selesai dianalisis. Analisis ini dilakukan dengan mempertimbangkan dua jenis vibrasi yaitu vibrasi aksial dan transversal. Sistem dimodelkan menjadi 5 (lima) bagian untuk masing-masing model menerus. Prinsip Lagrange digunakan untuk memperoleh persamaan motion. Software yang digunakan untuk keseluruhan analisis yaitu menggunakan AutoPIPE dan ANSYS. Perhitungan manual untuk kasus yang dipilih digunakan untuk menguji (validasi) software yang dipakai. Hasil dari analisis menunjukkan bahwa vibrasi masih terjadi hingga batas aman. Walaupun begitu, disarankan dengan cara mengurangi amplituda untuk segmen terpanjang dengan cara memberi support di tengah span.
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Current and internal fluid flow induced vibrations occurring in the "dog leg" and gas pipeline system of the Total E&P Indonesie installed at the Mahakam river floor were analyzed. Both axial vibrations and transversal vibrations were considered. The system was modeled as 5 individual sections, as a continuous model each. The Lagrange principle was used to derive the equations of motion. Two package software, namely AutoPIPE and ANSYS, were used for the entire analysis. Manual computation was performed for selected cases to verify the use of the software. The results of the analysis showed that the vibrations were still within the safe limits. However, a suggestion was raised to reduce amplitudes for the largest section by providing a support in the mid span of the section.

Item Type:	Thesis (Other)
Additional Information:	665.544 Cha a
Uncontrolled Keywords:	frekuensi natural, amplituda, vortex, natural frequency, amplitude, vortex
Subjects:	T Technology > TJ Mechanical engineering and machinery > TJ930 Pipelines (General). Underwater pipelines.
Divisions:	Faculty of Marine Technology (MARTECH) > Ocean Engineering > 38201-(S1) Undergraduate Thesis
Depositing User:	magang .
Date Deposited:	07 Oct 2026 08:05
Last Modified:	07 Oct 2026 08:05
URI:	http://repository.its.ac.id/id/eprint/145408

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