Article Per Year (5 Year)
p-Index From 2020 - 2025
4.62
P-Index
This Author published in this journals
All Journal Jurnal Rekayasa Proses Jurnal Energi Dan Manufaktur SIGMA EPSILON - Majalah Ilmiah Teknologi Keselamatan Nuklir Jurnal Teknologi Reaktor Nuklir Tri Dasa Mega Jurnal Pengembangan Energi Nuklir Jurnal Sains dan Teknologi Nuklir Indonesia (Indonesian Journal of Nuclear Science and Technology) Jurnal Simetris Prosiding Seminar Nasional Sains Dan Teknologi Fakultas Teknik Jurnal Teknosains Jurnal technoscientia Jurnal Teknologi Rekayasa Mesin Prosiding Semnastek Semesta Teknika Media Mesin: Majalah Teknik Mesin ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Jurnal Rekayasa Mesin MESIN JMPM (Jurnal Material dan Proses Manufaktur) Jurnal Rekayasa Proses Jurnal AME (Aplikasi Mekanika dan Energi): Jurnal Ilmiah Teknik Mesin Jurnal Teknik Mesin Indonesia Jurnal Ilmiah Teknik Mesin "MEKANIK" JURNAL TEKNOLOGI TECHNOSCIENTIA Jurnal Ilmiah Teknik Mesin Poros Jurnal Ilmu dan Inovasi Fisika Jurnal Polimesin Seminar Nasional Riset dan Teknologi (SEMNAS RISTEK) Almikanika Rekayasa Mekanika: Jurnal Ilmiah Teknik Mesin
Mulya Juarsa
Engineering And Devices For Energy Conversion (EDfEC) Research Group Jurusan Teknik Mesin Fakultas Teknik Universitas Ibn Khaldun Bogor
Aerospace Engineering Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Physics Social Sciences Other

Published : 72 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search
Journal : Jurnal Polimesin

 1 
Effect of water temperature on flow regimes and reynolds number in a passive natural circulation cooling system Setiawan, Putut Hery; Pamitran, Agus Sunjarianto; Yuliaji, Dwi; Pamungkas, Adhika Enggar; Budiman, Arif Adtyas; Amelia, Almira Citra; Maryadi, Shendy Akbar; Irwansyah, Ridho; Juarsa, Mulya
Jurnal Polimesin Vol 23, No 3 (2025): June
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v23i3.6665

Abstract

Natural circulation flow is an important phenomenon of passive cooling systems in nuclear reactor thermal management during accidents. This experimental study investigates the effect of varying water temperatures on flow regimes and Reynolds number within a passive natural circulation system. The research was conducted using a rectangular TP-loop (FASSIP-04 Ver.2) made of 1-inch SS304 pipe, 6 m high and 1.32 m wide. The water temperature setting was varied at 45°C, 55°C, 65°C, and 75°C, with a heating power of 4.2 kW, and the cooling tank was maintained at 10°C. Observations were made during transient heating, steady-state (for 3 hours), and transient cooling phases. Results show that increasing the heating tank temperature reduces fluid density and viscosity, thereby enhancing buoyancy-driven flow. This led to a transition in flow regimes from laminar to turbulent as the temperature increased. The Reynolds number increased by 169.38% when the water temperature was raised from 45°C to 75°C. Unstable flow behaviour, including fluctuating amplitudes and frequencies, was observed—characteristic of natural circulation dynamics. The study confirms a strong correlation between thermal variation and flow regime transition, providing insights into the performance of passive cooling systems under varying thermal loads.
Experimental investigation of the impact of non-uniform pipe diameters on natural circulation and dimensionless flow in in a rectangular loop Roswandi, Iwan; Pamitran, Agus Sunjarianto; Juarsa, Mulya; Budiman, Arif Adtyas
Jurnal Polimesin Vol 23, No 3 (2025): June
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v23i3.6666

Abstract

This experimental study investigates the effect of non-uniform pipe diameters on natural circulation flow within a rectangular loop related to non-dimensional numbers, such as the Reynolds number and the Grashof number. The study aims to understand how variations in pipe diameters influence natural circulation, which is critical for thermal engineering applications, including passive cooling systems for nuclear reactors and thermal management in electronic devices. Previous research by Vijayan et al., Garibaldi et al., and Elton et al. explored the impact of loop geometry on flow stability and heat transfer efficiency. In this study, a loop system with varying pipe diameters operates without a pump at atmospheric pressure. Data on fluid flow and temperature distribution were recorded at different temperature settings. The results show that fluid flow increases with temperature, decreasing fluid density and enhancing buoyancy forces. This increases the Reynolds number, reaching turbulent flow at 70°C throughout the loop. However, the 2-inch diameter hot leg remains in the transition region up to 90°C. The experimental correlation shows higher Grashof numbers than previous models, highlighting the significant impact of pipe diameter variations on buoyancy forces and flow transitions. These findings emphasize the importance of non-uniform pipe geometries in influencing natural circulation flow and its transition from laminar to turbulent flow, providing valuable insights for designing systems with non-uniform pipe configurations.
Co-Authors -, Giarno -, Joko A R Antariksawan A. Hafid A.A, Andrea Shevaladze A.R, Esa Putra Abd. Rasyid Syamsuri Adhika E. P. Adhika E. P. Adhika Enggar Pamungkas Ahmad Rofiq Sofyan Ainur R. Ainur Rosidi Ainur Rosidi ainur rosidi Ainur Rosidi Ainur Rosidi Ainur Rosidi Ainur Rosidi Ainur Rosidi, Ainur Alhuda, M Raffi Almadesya Rinaldi Almira Citra Amelia Amelia, Almira Citra Amirruddin Amirruddin Andi Sofrany Ekariansyah Andrea Shevaladze Al Amin Anggraini, Yeni Anhar R. Antariksawan, Anhar R. Anhar Riza Antariksawan Anhar Riza Antariksawan Anhar Riza Antariksawan Anhar Riza Antariksawan Arno, Giarno Arya Adhyaksa Waskita Baiquny, Ariq Hafizh Bambang Heru Bambang Riyono Budiman, Arif Adtyas Budiyanto, Nur Rochman Cukup Mulyana Cukup Mulyana D. H. Salimy Dedy Haryanto Dedy Haryanto Dedy Haryanto Dedy Haryanto Dedy Haryanto Dedy Haryanto Dedy Haryanto Dedy Haryanto Dedy Haryanto Dedy Haryanto Haryanto Deendarlianto Defri Sulaeman Dian Ariswara Dimas, Dimas Dinan Andiwijayakusuma Dr.Anhar Riza Antariksawan Dwi Yuliaji Edi Marzuki Edi Marzuki Edi Marzuki Edy Marzuki Edy S Edy S. Edy Sumarno, Edy Erlanda Kurnia Fauzi Ahmad Muda G B Heru Kusmoyo G. B. Heru K. G. B. Heru K. G. Bambang Heru K G. Bambang Heru K. G.B. Heru K G.B. Heru K Giarno . Giarno Giarno Giarno Giarno Giarno Giarno Giarno Giarno Giarno Giarno Giarno Giarno Giarno Giarno Giarno Giarno Giarno Giarno Giarno Giarno, . Gregorius Bambang Heru Gregorius Bambang Heru Gregorius Bambang Heru Gregorius Bambang Heru Kusnugroho Gunawan, Hyundianto Arif Hendro Tjahjono Hendro Tjahjono Hendro Tjahjono Hendro Tjahjono I Ketut Adi Sugita I Nyoman Suprapta Winaya I. D. Irianto Ign. Djoko Irianto Ignatius Djoko Irianto, Ignatius Djoko IGNB. Catrawedarma Indarto - Indarto - Indarto Indarto Indarto Indarto Intan Parwati Ismu H Ismu H. Ismu Handoyo Januar Akbar Joko P W Joko P.W. Joko Prasetio Joko Prasetio Joko Prasetio Witoko Joko Prasetyo Joko Prasetyo Joko Prasetyo Witoko K, G.B Heru K, G.B. Heru Keis Jury Pribadi Keis pribadi Kharisma, Sunandi Kiswanta Kiswanta - Kiswanta . Kiswanta Kiswanta, Kiswanta Kusigit Susanto KUSNUGROHO, GREGORIUS BAMBANG HERU Kussigit Santosa Santosa Lovini Gabriella N Lutfi Fitria Ningsih M Hadi Kusuma M. Hadi Kusuma Mahran Noufal Maryadi , Shendy Akbar Maryadi, Shendy Akbar Maulana, Jodi Meikayani, Jentik Mokhamad Nur Khasan Moniaga, Prya Muhamad Yulianto Muhammad Hadi Kusuma Mukhsinun Hadi Kusuma Nandy Putra Nandy Putra Nandy Setiadi Djaya Putra Nasution, Annio Indah Lestari Nathaniel Ezer Putra Darmawan Nitiamijaya, Devita Oktaviandi, Ryan P, Adhika Enggar Pamitran, Agus Sunjarianto PAMUNGKAS, ADHIKA ENGGAR Pitanova, Thasyah Prasetio, Dimas Prayogo, Kukuh Puradwi I W Puradwi Ismu Wahyono Putra, Esa Putra, Muhammad Ganjar Putu Brahmanda Sudarsana Putu Brahmanda Sudarsana Putut Hery Setiawan Rahayu Kusumastuti Rahayu Kusumastuti Rahayu Kusumastuti Kusumastuti Raldi Artono Koestor Renaldy Sharin Lesmana Restiya Maulana Ridho Irwansyah Rio Natanael Wijaya Ririn Fitriana Riska Khalisa Rosaldi Pratama Roswandi, Iwan Roy Waluyo Rudi Irawan Sanda Sanda Sinta Tri Habsari Siti mariam Sri Ismarwanti, Sri Sriyono Sriyono Sriyono Sriyono Suhendra Suhendra Sukmanto Dibyo Sumantri Hatmoko Sumantri Hatmoko Hatmoko Surip Widodo Surip Widodo Surip Widodo Surip Widodo Widodo Susyadi Susyadi Tachli Supriyadi Topan Setiadipura Totok Dermawan Try Hutomo Putra Try Hutomo Putra Veronica Indriati Sri Wardhani, Veronica Indriati Sri Wahyuni, Asri Wayan Nata Septiadi WITOKO, JOKO PRASETIO Yadi Yunus Yogi Sirod Gaoz Yogi Sirodz Gaos Yogi Sirodz Gaos, Yogi Sirodz Zuliantoni, Zuliantoni