Kurniawan, Andhika Saputra (2026) Analisis Bionic-Wave Cooling Plate untuk Pendinginan Baterai Litium-Ion pada Kapal Selam. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Sistem Manajemen Termal Baterai (Battery Thermal Management System, BTMS) menjadi komponen vital pada kapal selam bertenaga baterai litium-ion karena menjaga suhu sel tetap aman dan mencegah thermal runaway. Penelitian ini bertujuan menganalisis dan mengoptimalkan kinerja cooling plate melalui modifikasi geometri saluran bionic-wave agar perpindahan panas meningkat tanpa menaikkan pressure drop secara berlebihan. Analisis dilakukan melalui simulasi Computational Fluid Dynamics (CFD) berbasis pendekatan Conjugate Heat Transfer (CHT) yang memodelkan konduksi pada baterai dan konveksi pada fluida pendingin secara simultan. Tiga parameter geometri divariasikan, yaitu sudut belokan saluran (140° dan 150°), panjang segmen gelombang (138,88 mm dan 69,44 mm), serta jumlah pipa (4, 6, dan 8), kemudian dampaknya terhadap temperatur maksimum baterai dan pressure drop dievaluasi terhadap desain eksisting berupa enam pipa lurus. Hasil simulasi menunjukkan jumlah pipa merupakan faktor paling dominan. Penambahan dari empat ke delapan pipa memperluas area kontak perpindahan panas sehingga menurunkan temperatur maksimum baterai, meskipun disertai kenaikan pressure drop yang relatif kecil. Pengecilan sudut menjadi 140° dan pemendekan segmen menjadi 69,44 mm memberikan kontribusi tambahan dengan memperkuat pusaran aliran sekunder (Dean vortices) yang meningkatkan perpindahan panas sekaligus menekan rugi minor, sehingga geometri bionic-wave mampu mengimbangi kenaikan tekanan akibat penambahan pipa, bahkan menghasilkan pressure drop yang lebih rendah daripada desain eksisting. Konfigurasi optimal diperoleh pada bionic-wave 140° dengan panjang segmen 69,44 mm dan delapan pipa, yang menurunkan temperatur maksimum baterai menjadi 48,55 °C (turun 1,24%), menghasilkan pressure drop rata-rata 8.209 Pa atau 0,68% lebih rendah dibandingkan desain eksisting (49,16 °C dan 8.265 Pa). Konfigurasi ini dinilai sebagai solusi trade-off terbaik untuk sistem pendingin baterai litium-ion pada kapal selam.
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The Battery Thermal Management System (BTMS) is a vital component in lithium-ion battery-powered submarines, as it keeps cell temperatures within safe limits and prevents thermal runaway. This study aims to analyze and optimize the performance of a cooling plate by modifying the channel geometry into a bionic-wave configuration, so that heat transfer is enhanced without excessively increasing the pressure drop. The analysis was carried out using Computational Fluid Dynamics (CFD) simulations based on a Conjugate Heat Transfer (CHT) approach, which simultaneously models conduction within the battery and convection in the cooling fluid. Three geometric parameters were varied, namely the channel bend angle (140° and 150°), the wave segment length (138,88 mm and 69,44 mm), and the number of pipes (4, 6, and 8). Their effects on the maximum battery temperature and pressure drop were then evaluated against the existing design of six straight pipes. The simulation results show that the number of pipes is the most dominant factor. increasing it from four to eight enlarges the heat-transfer contact area and thus lowers the maximum battery temperature, although accompanied by a relatively small increase in pressure drop. Reducing the angle to 140° and shortening the segment to 69,44 mm provide an additional contribution by strengthening the secondary flow vortices (Dean vortices), which enhance heat transfer while suppressing minor losses, so that the bionic-wave geometry is able to offset the pressure rise caused by the additional pipes and even yields a lower pressure drop than the existing design. The optimal configuration was obtained for the bionic-wave design with a 140° angle, a 69,44 mm segment length, and eight pipes, which reduced the maximum battery temperature to 48,55 °C (a 1,24% decrease) and while producing an average pressure drop of 8.209 Pa, which is 0,68% lower than that of the existing design (49,16 °C and 8.265 Pa). This configuration is considered the best trade-off solution for the lithium-ion battery cooling system of submarines.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Bionic-wave, Conjugate Heat Transfer, Cooling Plate, Kapal Selam, Pressure Drop, Bionic-wave, Conjugate Heat Transfer, Cooling Plate, Submarines, Pressure Drop |
| Subjects: | Q Science > QC Physics > QC320 Heat transfer T Technology > TA Engineering (General). Civil engineering (General) > TA357 Computational fluid dynamics. Fluid Mechanics T Technology > TJ Mechanical engineering and machinery > TJ165 Energy storage. T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK2921 Lithium cells. |
| Divisions: | Faculty of Marine Technology (MARTECH) > Marine Engineering > 36202-(S1) Undergraduate Thesis |
| Depositing User: | Andhika Saputra Kurniawan |
| Date Deposited: | 01 Aug 2026 02:59 |
| Last Modified: | 01 Aug 2026 02:59 |
| URI: | http://repository.its.ac.id/id/eprint/141582 |
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