Analisis Perbandingan Performa Pompa Keruk Yang Dioperasikan Pada Kapal Cutter Suction Dredger Berdasarkan Posisi Operasional Pompa Menggunakan Simulasi CFD

Nurrohman, Fajar (2021) Analisis Perbandingan Performa Pompa Keruk Yang Dioperasikan Pada Kapal Cutter Suction Dredger Berdasarkan Posisi Operasional Pompa Menggunakan Simulasi CFD. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Cutter Suction Dredger atau yang biasa disebut kapal keruk hisap, bekerja dengan menghisap material dari dasar air melalui pipa hisap dengan pompa. Pada ujung pipa hisap dipasang gerigi pemotong (cutter) untuk memperkecil ukuran material yang akan masuk pipa hisap sehingga mempercepat proses pengerukan. Untuk meningkatkan performa dan efisiensi operasional, dilakukan penelitian dengan melakukan percobaan membandingkan performa pompa dengan posisi operasional horizontal dan pompa keruk dengan posisi operasional vertikal menggunakan simulasi computational fluid dynamics (CFD). Diharapkan penelitian ini dapat memberi dampak yang positif terhadap performa dan efisiensi dari operasional pompa keruk tersebut. Pada penelitian ini akan dilakukan analisis mengenai perbandingan performa terhadap posisi operasional pompa keruk (Dredge Pump) menggunakan simulasi Computational Fluid Dynamics (CFD). Computational Fluid Dynamics (CFD) merupakan perangkat metode numerik yang diaplikasikan untuk mendapatkan perkiraan solusi dari masalah fluida dinamis dan perpindahan panas. Tujuan dari CFD adalah untuk memprediksi secara akurat tentang aliran fluida. Berdasarkan simulasi Computational Fluid Dynamics (CFD) yang telah dilakukan, didapatkan informasi bahwa pompa pada posisi vertikal menunjukkan hasil yang lebih baik dibanding dengan pompa pada posisi horizontal. Hal tersebut dibuktikan dengan adanya peningkatan performa pompa vertikal pada setiap variasi konsentrasi massa lumpur. Pada variasi konsentrasi massa lumpur 60% didapatkan peningkatan sebesar 2,82%. Pada variasi konsentrasi massa lumpur 70% didapatkan peningkatan sebesar 2,83%. Adapun pada variasi konsentrasi massa lumpur 80% didapatkan peningkatan sebesar 4,65%. Sedangkan untuk variasi massa lumpur 90% didapatkan peningkatan sebesar 4,77%. Hal lain yang membuktikan bahwa peforma pompa pada posisi vertikal menunjukkan hasil yang lebih baik adalah peningkatan performa pompa vertikal pada setiap variasi Goal Parameter. Peningkatan rata-rata performa pompa vertikal di parameter GG Average Total Pressure, GG Force, GG Average Dynamic Pressure, SG Average Static Pressure, SG Average Total Pressure, SG Average Dynamic Pressure, dan SG Average Velocity secara berturut turut sebesar 7,44%; 7,57%; 1,77%; 4,79%; 2,32%; 1,68%; 0,82%.
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Cutter Suction Dredger or commonly called a suction dredger, works by sucking material from the bottom of the water through a suction pipe with a pump. At the end of the suction pipe, cutter teeth are installed to reduce the size of the material that will enter the suction pipe so as to speed up the dredging process. To improve operational performance and efficiency, a research was conducted by conducting experiments comparing the performance of pumps with horizontal operating position and dredge pumps with vertical operating positions using computational fluid dynamics (CFD) simulations. It is hoped that this research can have a positive impact on the performance and efficiency of the dredge pump operation. In this study, an analysis will be carried out on the comparison of performance to the operational position of the dredge pump using Computational Fluid Dynamics (CFD) simulation. Computational Fluid Dynamics (CFD) is a set of numerical methods that are applied to obtain approximate solutions to fluid dynamics and heat transfer problems. The purpose of CFD is to accurately predict fluid flow. Based on the Computational Fluid Dynamics (CFD) simulation that has been carried out, information is obtained that the pump in the vertical position shows better results than the pump in the horizontal position. This is evidenced by an increase in the performance of the vertical pump for each variation of the concentration of the mud mass. In the variation of the 60% mud mass concentration, an increase of 2.82% was obtained. In the variation of the 70% mud mass concentration, an increase of 2.83% was obtained. As for the variation of the 80% mud mass concentration, an increase of 4.65% was obtained. As for the 90% mud mass variation, an increase of 4.77% was obtained. Another thing that proves that the pump performance in the vertical position shows better results is the increase in vertical pump performance for each variation of the Goal Parameter. The average increase in vertical pump performance in the parameters GG Average Total Pressure, GG Force, GG Average Dynamic Pressure, SG Average Static Pressure, SG Average Total Pressure, SG Average Dynamic Pressure, and SG Average Velocity respectively by 7.44%; 7.57%; 1.77%; 4.79%; 2.32%; 1.68%; 0.82%.

Item Type:	Thesis (Undergraduate)
Uncontrolled Keywords:	Cutter Suction Dredger, Peforma Pompa, CFD,Cutter Suction Dredger, Pump Performance, CFD.
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) > TA357 Computational fluid dynamics. Fluid Mechanics T Technology > TJ Mechanical engineering and machinery > TJ919 Centrifugal pumps--Design and construction.
Divisions:	Faculty of Marine Technology (MARTECH) > Marine Engineering > 36202-(S1) Undergraduate Thesis
Depositing User:	Fajar Nurrohman
Date Deposited:	30 Aug 2021 06:32
Last Modified:	30 Aug 2021 06:32
URI:	http://repository.its.ac.id/id/eprint/90621

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