Studi Numerik Karakteristik Aliran di Dalam Saluran Pengelak Berbentuk Gerigi menggunakan Program OpenFOAM

Farisi, Hafidh (2023) Studi Numerik Karakteristik Aliran di Dalam Saluran Pengelak Berbentuk Gerigi menggunakan Program OpenFOAM. Masters thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Bangunan pengelak memiliki peran penting dalam mengalihkan aliran selama pekerjaan konstruksi bendungan berlangsung. Kapasitas bangunan pengelak akan sangat bergantung pada dimensi dan karakteristik aliran di dalam bangunan pengelak tersebut. Dalam penelitian ini, karakteristik dan pola aliran bangunan pengelak Bendungan Tapin akan dimodelkan dengan menggunakan piranti lunak komputasi fluida dinamis OpenFOAM. Pemodelan dilakukan secara 3 Dimensi untuk mengetahui pengaruh dari penahan stabilitas saluran terhadap karakteristik saluran. Simulasi dilakukan dengan model Reynold Averaged Navier Stokes (RANS) dengan model turbulen k-epsilon. Simulasi tanpa model turbulen juga dilakukan sebagai pembanding. Sensitivitas model dites dengan menggunakan dua ukuran mesh. Hasil simulasi menunjukkan pola aliran setelah struktur gerigi mengalami peningkatan turbulensi. Pengaruh ukuran mesh dan model turbulen cukup signifikan dalam memperhitungkan kehilangan energi yang terjadi di dalam saluran.
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Diversion channel have an important role in diverting flow during dam construction work. The capacity of the circumvention building will depend greatly on the dimensions and characteristics of the flow within the diversion cahnnel. In this research, the characteristics and flow patterns of the Tapin Dam diversion channel will be modeled using OpenFOAM dynamic fluid computing software. Modeling was carried out in 3 dimensions to determine the effect of channel stability barriers on channel characteristics. The simulation was carried out using the Reynolds Averaged Navier Stokes (RANS) model with the k-epsilon turbulent model. Simulations without a turbulent model were also carried out as a comparison. The sensitivity of the model was tested using two mesh sizes. The simulation results show the flow pattern after the serrated structure experiences increased turbulence. The influence of mesh size and turbulent model is quite significant in calculating the energy losses that occur in the channel.

Item Type:	Thesis (Masters)
Uncontrolled Keywords:	saluran pengelak, aliran turbulen, penampang bergerigi, diversion channel, turbulen flow, serration shape
Subjects:	T Technology > TC Hydraulic engineering. Ocean engineering T Technology > TC Hydraulic engineering. Ocean engineering > TC167 Dams, reservoirs
Divisions:	Faculty of Civil, Planning, and Geo Engineering (CIVPLAN) > Civil Engineering > 22101-(S2) Master Thesis
Depositing User:	Farisi Hafidh
Date Deposited:	22 Jan 2024 07:49
Last Modified:	22 Jan 2024 07:49
URI:	http://repository.its.ac.id/id/eprint/105578

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