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All Journal International Journal of Electrical and Computer Engineering IAES International Journal of Artificial Intelligence (IJ-AI) E-Jurnal Medika Udayana Rotasi Media Statistika Jurnal Ilmu Informasi Perpustakaan dan Kearsipan Jurnal Pendidikan dan Pembelajaran Khatulistiwa (JPPK) Jurnal Simetris Journal of Education and Learning (EduLearn) Jurnal Online Mahasiswa (JOM) Bidang Ilmu Sosial dan Ilmu Politik Jurnal Online Mahasiswa (JOM) Bidang Keguruan dan Ilmu Pendidikan JURNAL EVALUASI PENDIDIKAN Nusantara of Research : Jurnal Hasil-hasil penelitian Universitas Nusantara PGRI Kediri (e-journal) Rekayasa Mesin Jurnal Media Hukum Jurnal Ilmiah Teknik Industri Jurnal Rekayasa Mesin Jurnal Bioedukasi Turbo : Jurnal Program Studi Teknik Mesin International Journal Pedagogy of Social Studies JURNAL KONSELING GUSJIGANG PEMBELAJAR: Jurnal Ilmu Pendidikan, Keguruan, dan Pembelajaran BERDIKARI : Jurnal Inovasi dan Penerapan Ipteks JTERA (Jurnal Teknologi Rekayasa) Indonesian Journal of Educational Counseling Jurnal Ilmiah Ilmu Kesehatan: Wawasan Kesehatan Jurnal Analisis Sosial Politik Administratio : Jurnal Ilmiah Administrasi Publik dan Pembangunan Nagari Law Review GHIDZA: Jurnal Gizi dan Kesehatan JURNAL ILMIAH MAHASISWA AGROINFO GALUH JOPS (Journal Of Pharmacy and Science) Angkasa: Jurnal Ilmiah Bidang Teknologi CARADDE: Jurnal Pengabdian Kepada Masyarakat JURNAL PENDIDIKAN TAMBUSAI Bisma The Journal of Counseling Jurnal Kreativitas PKM ENLIGHTEN (Jurnal Bimbingan dan Konseling Islam) Psychology, Evaluation, and Technology in Educational Research TELKA - Telekomunikasi, Elektronika, Komputasi dan Kontrol Jurnal Keperawatan Respati Yogyakarta Menara Ilmu JURNAL TEKNOLOGI INFORMASI Atfaluna: Journal of Islamic Early Childhood Education J-KESMAS: Jurnal Kesehatan Masyarakat Al-Asalmiya Nursing: Journal of Nursing Sciences JAIM (Jurnal Abdi Masyarakat) Jurnal Muara Sains, Teknologi, Kedokteran dan Ilmu Kesehatan Infotekmesin Tadabbur: Jurnal Peradaban Islam Bali Medika Jurnal Diagnosis: Jurnal Ilmiah Kesehatan Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi Journal of Telenursing (JOTING) Reviu Akuntansi dan Bisnis Indonesia Journal of Applied Sciences and Advanced Technology Jurnal Papatung : Jurnal Ilmu Administrasi Publik, Pemerintahan dan Politik Jurnal Peduli Masyarakat Jurnal Bakti Masyarakat Indonesia International Journal of Applied Guidance and Counseling SELODANG MAYANG jurnal hukum das sollen Ideguru: Jurnal Karya Ilmiah Guru G-Couns: Jurnal Bimbingan dan Konseling COUNSENESIA Indonesian Journal of Guidance and Counseling Serambi Journal of Agricultural Technology Jurnal Kesehatan Tambusai Al-Sharf: Jurnal Ekonomi Islam International Journal of Educational Research and Social Sciences (IJERSC) AKSELERASI: Jurnal Ilmiah Nasional Journal of Community Development Jurnal Manajemen dan Ilmu Administrasi Publik (JMIAP) Jurnal SAINTIKOM (Jurnal Sains Manajemen Informatika dan Komputer) Journal of Instructional and Development Researches Jurnal Ekonomi Journal of Research in Instructional ALTRUISTIK : Jurnal Konseling dan Psikologi Pendidikan Absorbent Mind Jurnal Kelola : Jurnal Ilmu Sosial International Journal of Science and Society (IJSOC) Jurnal Pengabdian Masyarakat : Pemberdayaan, Inovasi dan Perubahan Al-MIKRAJ: Jurnal studi Islam dan Humaniora Pemuliaan Hukum Jurnal Hasi Penelitian Dan Pengkajian Ilmiah Eksakta - JPPIE Jurnal Pembelajaran, Bimbingan, dan Pengelolaan Pendidikan Jurnal Teknik Sipil Institut Teknologi Padang Legal Protection for the Partnership Agreement Parties Jurnal Hukum dan Peradilan QISTINA: Jurnal Multidisiplin Indonesia Jurnal Riset Indragiri Yurisprudentia: Jurnal Hukum Ekonomi e-Jurnal Inovasi Pembelajaran Sekolah Dasar Jurnal Pengabdian Kepada Masyarakat Journal of Economics and Social Sciences DUNIA KEPERAWATAN: JURNAL KEPERAWATAN DAN KESEHATAN JIPM: Jurnal Indragiri Penelitian Multidisiplin Electronic Journal of Education, Social Economics and Technology PharmaCine : Journal of Pharmacy, Medical and Health Science Jurnal Horizon Pendidikan Bulletin of Social Informatics Theory and Application AL-SULTHANIYAH PPSDP International Journal of Education Research in Education, Technology, and Multiculture Social Science Academic Jurnal Edukasi Prosiding Seminar Hasil Penelitian dan Pengabdian Kepada Masyarakat Kanun: Jurnal Ilmu Hukum Jurnal Ilmiah Mahasiswa Fakultas Keperawatan EDUCATIONE: Journal of Education Research and Review Beujroh : Jurnal Pemberdayaan dan Pengabdian pada Masyarakat Proceedings Series of Educational Studies Jurnal Polimesin International Journal of Research in Counseling Lontara Journal Of Health Science And Technology Jurnal Masyarakat Mengabdi (JUMADI) Journal of Clean Technology JPS (Jurnal Perbankan Syariah) Holistik Jurnal Kesehatan Indonesian Journal of Humanities and Social Sciences e-Jurnal Inovasi Pembelajaran Sekolah Dasar Journal of Business Inflation Management and Accounting Lex Librum : Jurnal Ilmu Hukum Jurnal Epidemiologi Kesehatan Indonesia Buletin Konseling Inovatif
Fitri Wahyuni
Alumni Prodi Pend. Biologi FKIP Unkhair
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Journal : Jurnal Polimesin

 1 
Study of hydrodynamic characteristics in oscillating wave surge converter julian, james; Anggara, Rizki Aldi; Naufal, Ridwan Daris; Ramadhani, Rifqi; Prasetyo, Eko Andi; Wahyuni, Fitri; Gunasti, Nabilah Dwi
Jurnal Polimesin Vol 22, No 2 (2024): April
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v22i2.4715

Abstract

In the realm of renewable energy, researchers worldwide have been paying close attention to developing the Oscillating Wave Surge Converter (OWSC) device. This device has the potential to harness the power of ocean waves and convert it into a reliable source of clean energy. Hydrodynamic characteristics are essential parameters in developing OWSC devices. Therefore, this research conducted a hydrodynamic study on the OWSC device with variations in ocean wave periods, including T= 1.5, 1.7, 1.9, 2.1, and 2.3. The Boundary Element Method (BEM) describes the interaction between sea waves and floating body structures. This method assumes incompressible, inviscid, and irrotational flow. A numerical approach is used as a calculation method followed by verification and validation to support the level of actualization. The research results showed that the incident wave caused the OWSC device to experience a deviation from its equilibrium position in the form of an oscillating flap inclination angle as a form of hydrodynamic characteristics. The sea wave period correlatedwith the rate of change in flap position over time, including the maximum deviation in the flap angle. As a power plant, the performance of the OWSC device can work at reasonably short-wave period intervals based on the device's ability to produce mechanical power. The highest average mechanical power was achieved in the T= 1.5 period of 34.49 Watts with an efficiency of up to 52.43%. The OWSC device requires a high intensity of wave energy in a short duration to generate optimal mechanical power. It is important to note that optimal mechanical power generation is crucial for the OWSC device to function effectively. Therefore, the device should be placed in a location where the wave energy intensity is consistently high.
Numerical Study On Characteristics Of The Backward-Facing Step Flow With Variations Of The Slope Angle Of The Step julian, james; Anggara, Rizki Aldi; Wahyuni, Fitri
Jurnal Polimesin Vol 22, No 1 (2024): February
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v22i1.4052

Abstract

The phenomenon of flow separation plays a vital role in the industrial world. The backward-facing step (BFS) is a general form representing flow separation. This study investigates the influence of the slope angle of the step on BFS flow characteristics at various low Reynolds numbers. According to the CFD results, the flow separation phenomenon forms a circulation zone for each increase in Reynolds numbers. This phenomenon is a result of the sudden expansion of the channel geometry. The BFS with the slope angle of the step demonstrates that the increase in the recirculation zone can be minimized, thus appropriately delaying flow separation. The recirculation zone causes fluid flow to reverse direction, affecting fluid flow efficiency due to resulting pressure differences. Therefore, a BFS with the slope angle of the step exhibits a more efficient flow phenomenon by minimizing the recirculation zone.
Numerical investigation of heat reduction system in 42110 Lithium-Ion battery packs using cooling plate spacing variations Adhitama, Bima Rakha; Julian, James; Wahyuni, Fitri; Madhudhu, Fathin Muhammad; Armadani, Elvi
Jurnal Polimesin Vol 23, No 6 (2025): December
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v23i6.7692

Abstract

An efficient thermal reduction system is crucial for ensuring the optimal performance and safety of Electric Vehicle (EV) batteries, notably by maintaining uniform temperature distribution and minimizing the risk of thermal runaway. This study presents a numerical investigation of the thermal behaviour of a liquid-cooled system for a cylindrical Li-ion 42110 battery pack, focusing on the influence of varying cold-plate spacing. Three cold plate configurations with spacing ratios r = 0.78, r = 0.33, and r = 0 were examined, with r = 0.78 corresponding to the most significant separation. The simulation employed a Reynolds-Averaged Navier–Stokes (RANS) model to resolve fluid flow and energy transport, and the heat-generation profile was derived from experimental data. The results show that all cooling configurations substantially reduced the maximum temperature relative to the uncooled case, with the widest spacing (r = 0.78) achieving the most significant average reduction of 19.736%. However, designs with smaller spacing exhibited slightly higher temperatures and reduced uniformity, particularly near the positive pole, where heat concentration is more pronounced. The temperature deviation remained within the acceptable 2% threshold. These findings highlight not only the thermal effectiveness of each spacing ratio but also its design implications, demonstrating that spacing plays a critical role in controlling peak temperature and maintaining uniformity. Overall, the study emphasizes that strategic cold-plate spacing is essential for reliable, efficient, and thermally stable battery operation in EV applications.
The effect of flap thickness on the hydrodynamic performance of an oscillating wave surge converter Julian, James; Nisa, Rasya Aulia Nathania; Wahyuni, Fitri; Purba, Riki Hendra; Madhudhu, Fathin Muhammad; Armadani, Elvi
Jurnal Polimesin Vol 23, No 6 (2025): December
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v23i6.7682

Abstract

With the growing demand for energy and the need to transition to renewable sources, ocean wave energy presents great potential. The Oscillating Wave Surge Converter (OWSC) is a promising technology due to its nearshore applicability, structural simplicity, and robust design. This study systematically investigates the effect of flap thickness on the dynamic performance of a hinge-mounted OWSC using the Boundary Element Method (BEM).   The research models the hydrodynamic interactions and analyzes the effects of three different flap thicknesses on key metrics, including maximum angle deviation, angular velocity, torque, and power capture. The results indicate that all flap variations demonstrate stable oscillatory movement, but greater flap thickness reduces the maximum angle deviation due to increased inertia and hydrostatic pressure. A resonant peak was observed for all thicknesses at a wave period of 1.3 seconds, where energy transfer was maximized. At this frequency, the thickest flap achieved the highest efficiency (78.94%), followed by the intermediate (77.50%) and thinnest (70.77%) variations. The findings suggest that while flap thickness influences efficiency, the primary factor for maximizing energy capture is the alignment of the wave period with the device's natural frequency.
Co-Authors AA Sudharmawan, AA Acehan, T. Raden Achmad Zuchriadi Adhitama, Bima Rakha Adi Atmoko Adi Winarta, Adi Afriyanti, Nessy Agus Wartiningsih Agustina, Nurhaliza AGUSTINA, WAHYUNI Ahdim, Hendy Surya Ahsan Ahsan Akil, Rahmah Akkas, Rusmaini Akmal, Reza Najmi Alamsyah, Muh. Nur Aldi Anggara, Rizki Alfikriah, Syahira amalia, apriliani Amrul Amrul Anas, Andi Iqram Andi Rahmaniar Andi Sagita, Andi Anggara, Rizki Aldi Anjarie Dharmastuti Anton Prabowo Apriliyanti , Fressi Arbin Janu Setiyowati, Arbin Ardia Putra Arel, Afdhil Arianti, Alivia Eka Arista Kiswantoro, Arista Armadani, Elvi Wijaya Arnelia, Dela Arpris Pangestu, Arya Arrayya, Rodrigo Aryana, Risma As’ari, Muhammad Agung Asfahani, Asfahani Asneliwarni, Asneliwarni Atikasari, Tiara Cahya Awani, Andi Tenri Ayu, Riana Kesuma Azizah, Suci Midsayhri Azmi, M. Rizqi Bagas Dewantara, Annastya Bambang Budi Wiyono Bela Negara, Adinda Billad, Rayhan Fariansyah Budhi Martana Budiyantoro, Cahyo Bustami, Alex Wissalam Choiruna, Hasby Pri D. M. Taher, D. M. Darmiwati Darmiwati, Darmiwati Daud Department, administratio Desnita, Eka Dewantara, Annastya Bagas Dian Miranda Dina Amaluis Dinda Putri Abadi Diningsih, Suci Marta Diniyah, Usrotun Dwiyana, Artiyan Dzikrulloh, Mohammad Hilfi Azra Eddy Noviana Edi Saputra, Ahmad Efik Yusdiansyah Eliyasni, Rifda Elsa Marsellinda Elvi Armadani Elvi Roza Syofyan Elvionita, Cindy Fachrurahman, Indra Fahrudin Fahrudin Fahrudin, Fahrudin Fahrudin Faizin, Rudi Faizza, Amalia Nur Farha, Auditya Farida, Miftahul Fatih, Amri Fauzi, Ade Fikri Ferdyanto, Ferdyanto Fita Kurniasari Fitri, Sri Fourlando, Rainer Samuel Fuaddah, Dannur Garendi, Aisyah Vitariani Gudnanto Gunasti, Nabilah Dwi Hamzah, Muhammad Fakhri Hanafi, Husni Hapidzha, Putty Happy Yulia Harahap, Yudani Alamsyah Hardiman, Mochamad Yana Hariati, Niken Widyastuti Hartati, Herni Haryani, Ninik Hatijah Hatijah HENDRA GUNAWAN B11211055 Hendra, Joni Hermiza Mardesci Hetti Rahmawati Hidayatullah, Hengki Tri Hikmah, Muh. Syawal Hutasuhut, Ida Juliana Ibrahim, Rusli Imanuel Hitipeuw Intang, Siti Nur Intang, St Nur Irawan, Aris Irawan, Nurul Afifah Ishaq Ishaq Iskandar, Waridho Isril " James Julian Jamri, Jamri Jati, Revina Sedyaning Julian, James James Junaedi, Thomas Junaidi Junaidi Kartika, Rachmah Nanda Kesuma Ayu, Riana Komariah, Nur Krisnawati, Nova Kurniawan, Jhoni Kurniawan, Nanda Alfan Laloan, Nelviana Nelce Lazim N, Lazim N Lestari, Eva Dewi Lismaini, Lismaini Lumbantoruan, Regina Lumbantoruan, Regina Natalindah Lutfi Fauzan M. Ramli Madhudhu, Fathin Muhammad Mahdawanci, Yesi Mahdhudhu, Fathin Muhammad Maidelwita, Yani Malta Nelisa Mardhiah, Siti Martina Martina Martono Martono Masarohmat, Masarohmat Masithah, St Masithah, St. Masithah, St. Masithah Masniladevi, Masniladevi Meiliyana Meiliyana Melliza, Nur mentari, chintia indah Merwanta, Selvi Miko Wahyono, Tri Yunis Moch. Syihabudin Nuha Moh Masduki, Moh Moh. Hazim Ahrori Moh. Sholeh, Moh. Mufidah, Elia Firda Muflihatusyawal, Edfitri Muhammad Nur Muhammad Ramli Muhsin Muhsin Mulyana Saputri, Rahayu Muneng, Nadya Lutfiya Munirah Munirah Nadia Nadia Najib, Ariz Namira, Zahra Berlian Nandy Putra Nasrah Yusuf, Yusriah Naufal, Ridwan Daris Nawawi, Erfan Nisa, Rasya Aulia Nathania Nisa, Raysa Noor Diani Nora Yuniar Setyaputri Novyar Satriawan Fikri, KMS Nuha, Moch. Syihabudin Nur Hidayah Nurcahyani, Icha Dian Nurhasanah Nurhasanah Nurlina Nurlina NURMA, TIA Nursalam Nursalam Nurul Fadhilah Oktaviani, Eva Oktavitasari, Dini Orsinil, Warneri Paputungan, Cendra Perdina, Siska Pharmaheri, Anugrah Putra Prabawa, Abi Fa’izzarahman Prabawa, Abi Izzatur Prabowo, Anton Dwi Prasetyo, Eko Andi Pravesti, Cindy Asli Pravesti, Cindy Asli Purba, Riki Hendra Puspasari, Dwi Putri Rahmadani, Putri Putri, Sheila Putri, Suci Nora Julina Putriana, Nanda Rachmat Hargono Rafli, Muhammad Rahayu, Ririn Ami Rahmaniar MB, Andi Rahmaniar, Andi Rahmaniar Rahmatika, Ika Rahmawati Rahmawati Rahmayani, Mentari Tri Indah Ramadhani, Rifqi Ramli Rate, Suherman Reda Rizal Reidana, Linka Latifany Falasifa Rellam, Silpa Reni, Ises Restu Dwi Ariyanto, Restu Dwi Rindiani, Wahyu A Rini Irianti Sundary Rini Rahmayanti Rivai, Mokhammad Bahtiar Rizki Anggara, Rizki Rizky Mustikasari, Bella Rohmah, Ratna Afiah Awwalu Rosmawati Rosmawati Rum Rosyid SAKINAH, PUTRI Salsabila Rahmah, Khalda Samsudin Samsudin Santi Widiasari, Santi Santika Sari Saputra, Noverdo Sari, Rena Sarumaha, Rahmat Syarief Satria, Muhammad Fari Sedeq, Khalees Selvia Selvia Sembiring, Rinawati Setiawan, Deri Setiawan, Dimas Adi Sigit Wibowo Silvia Rahayu, Ajeng Siswanto, Alen Siswanto, Saphira Anggraita Siti Aminah Siti Rahmah Siti Uswatun Hasanah Soraya Soraya St. Masithah, St. Masithah St.Masithah, St.Masithah Suganda, Andrian Suherman, Suherman Sukamta Sukamta Suminarni, Nanik Suriyah, Suriyah Suryani, Nilma Syafruddin Syafruddin Syafruddin, H Syahrizal, MHD Syaiful Amri Syamsul, Musdalifah Syariffuddin Syariffuddin Tamrin Fathoni Taneo, Mario Martin Taufik, Andi Darma Toding Bunga, Nely Tompo, Muh. Nur Alamsyah Topan, Anggie Wijaya Tri Umari, Tri Tua, Lomo Mula Ulhaq, Faiz Daffa Vera Devani Vivina Eprillison Wandi, Wandi Wida Ningsih Widyasmoro, Widyasmoro Yahdian Rasyadi Yoyok Bekti Prasetyo Yoza, Prima Yuliana, Sekar Yulianti Rasyid Yuliarti, Ista Yuni Astuti Yuniar Lestari Yunita, Mila Yurisman Yusuf, Kurnia Zaman, Akhmad Nidhomuz Zudana, Kirana Zulkifli Ahmad