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All Journal CIVED (Journal of Civil Engineering and Vocational Education) Mechanical Engineering Education Journal Sainstek JURNAL PENDIDIKAN TAMBUSAI JOURNAL OF SCIENCE AND SOCIAL RESEARCH Eksakta : Berkala Ilmiah Bidang MIPA Jurnal Fokus Elektroda : Energi Listrik, Telekomunikasi, Komputer, Elektronika dan Kendali Journal of Applied Engineering and Technological Science (JAETS) MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering Didaktik : Jurnal Ilmiah PGSD STKIP Subang Teknomekanik Fokus Elektroda: Energi Listrik, Telekomunikasi, Komputer, Elektronika dan Kendali) Jurnal Vokasi Mekanika Tsaqofah: Jurnal Penelitian Guru Indonesia MASALIQ: Jurnal Pendidikan dan Sains Fleksibel: Jurnal Pengabdian Kepada Masyarakat Journal of Engineering Researcher and Lecturer Journal of Innovative and Creativity IJIMCE : International Journal of Innovation in Mechanical Construction and Energy Journal of Civil Engineering and Vocational Education Mars: Jurnal Teknik Mesin, Industri, Elektro dan Ilmu Komputer
Yolli Fernanda
Universitas Negeri Padang
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Analysis Of The Effect Of Penstock Diameter Variation And Nozzle Flow Velocity On Pelton Turbine Performance Using Computational Fluid Dynamics (CFD) Revaldo Nur Hidayat; Randi Purnama Putra; Yolli Fernanda; Fitrah Qalbina
Jurnal Vokasi Mekanika (VoMek) Vol 8 No 2 (2026): Jurnal Vokasi Mekanika
Publisher : Unversitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/18k9e415

Abstract

The performance of a Pelton turbine in micro-hydropower plants is influenced by penstock design and fluid flow conditions. Variations in penstock diameter can lead to changes in head loss, flow velocity, and energy transfer efficiency. This study aims to analyze the effect of penstock diameter variation and nozzle flow velocity on Pelton turbine performance under different head conditions using the Computational Fluid Dynamics (CFD) method.Simulations were conducted using penstock diameters of 4 inches, 5 inches, and 6 inches with ANSYS software. The results show that the respective head losses are 0.010 m, 0.006 m, and 0.0028 m, indicating that larger diameters reduce friction losses in the flow. The corresponding nozzle velocities are 8.90 m/s, 9.08 m/s, and 8.64 m/s, with the highest value observed at the 5-inch diameter due to the balance between flow rate and energy losses. The resulting torque values are 2.13 Nm, 2.55 Nm, and 2.60 Nm, while the rotor rotational speeds are 150.87 W, 189.07 W, and 194.90 W. The effective power generated is 65.59 W, 80.21 W, and 77.79 W, with efficiencies of 43.77%, 42.44%, and 39.95%, respectively. The results indicate that a 5-inch penstock diameter provides the most optimal performance, as it achieves the best balance between head loss, flow distribution, and fluid energy transfer.
Co-Authors - Primawati A, Yufrizal Abdillah Irfan Abdu Idham Adam Mandra Suwandi Agustian, Rizki Ahmed, Shabir Akbar, Arifki Akhmad Rais Al Rahman, Muhammad Fadil Albasyit, Muhammad Ravi Alhakim, Rezki Ambiyar, Ambiyar Aminuyati Ananda, Yoga Rizki Andika Putra ANDIKA SAPUTRA Andre Kurniawan Andre Kurniawan Andre Kurniawan Andri, Junil Arafat, Andril Arwizet Arwizet Arwizet Arwizet, Arwizet Arwizet. K Asadellah, Dimas Pandhu Ashekul Islam Azis, Ismail Badri Kurniawan Budi Syahri Delima Yanti Sari Desyandri Desyandri Devky Meinaldi Fernanda Diki Afrianto Dionova, Aldi Dori Yuvenda Dori Yuvenda Dwi Sakti Putra DWI SURYANTO Egis Egis Eko Indrawan Elvira Zondra, Elvira Erizon, Nelvi Fadhilah Fadhilah Fadri, Muhammad Al Fahrendra, Aqsal Faisal, Afdal Farhan Rahmat Putra Fathi Aulia DZ Febri Prasetya Felia Maresta Fido Delfri Tamasya Firma Yulianis Firman Firman Fitrah Qalbina Fitri Amelia Fonny Maswija Priscilla Fretina Sari Hadi, Farhan Handayani, Meisuri Handrianto Handrianto Hendri Nurdin Ikhsan, Ghufra Irzal Irzal Irzal, Irzal Jasman Jasman Kandena Putra, Tegar Kiwata, Takahiro Kresna Adi Prasetya La Ode Ahmad Barata M Chalid Kurnia M. Ilham Anugrah Illahi Mega Oktaviani Mochammad Haikal Muhammad Akhbar Muhammad Firdaus Muhammad Raihan Muhammad Riski Hidayat Muhammad Shiddiq Muhammad, Maghfiridhani Mulianti Nasution, Ridhollah Nelvi Erizon Nurdin Hendri Nurwijayanti Pratomo, Muhammad Agung Primandari, Sri Riski Putri Primawati Primawati, Primawati Purwantono Purwantono purwantono purwantono Purwantono, Purwantono Putra, Kevinda Putra, Randi Purnama Rafki Irianto Rahmadiawan, Dieter Ramadhan, Fadli Randi Purnama Putra Refdinal Refdinal, Refdinal Refdinal, Refdinal Refitra Irawan Remon Lapisa Revaldo Nur Hidayat Ridhatul Arif Riezky Hidayattullah Rifelino Rifelino Riki Saputra, Riki Riky Satria Rizki Ramadhan Nasution, Muhammad Robby, Muhammad Rudy Anarta Salmat, Salmat Seprianto, Ekon Sherly Rahmayani Shi, Shih-Chen Sri Rizki Putri Primandari Surya, Fajar Syahril Syahril Syaiful Salim Teki Haryono Toto Sugiarto Usin Usin Waskito Willy Vernando Yovindra, Difa Yufrizal Yufrizal Yuliardiansyah, Haris Yusmaita, Eka Zainal Abadi Zhuang, Wei-Ting Zulvani Adha