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All Journal ROTOR: JURNAL ILMIAH TEKNIK MESIN Jurnal Rekayasa Mesin Jurnal Elemen
Fajarningrum, Nurmala Dyah
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Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Journal : Jurnal Elemen

 1 
PENGARUH VARIASI DESAIN SUDU TERHADAP KARAKTERISTIK HIDRODINAMIKA TURBIN AKSIAL VORTEX ULTRA LOW HEAD MENGGUNAKAN METODE CFD Khanif, Masnurojak Bin; Rahman Saleh, Arif; Fajarningrum, Nurmala Dyah; Sulistiyo, Raka Mahendra
ELEMEN : JURNAL TEKNIK MESIN Vol. 11 No. 1 (2024)
Publisher : POLITALA PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34128/je.v11i1.279

Abstract

Renewable energy is being developed by many advanced countries due to its positive impacts. Indonesia has a high potential for hydropower generation using axial vortex turbines, which are effective at low head heights. Researchers use experimental methods, employing CFD simulations with specific boundary conditions. In one blade variation, testing was conducted 18 times with speed variables (20, 40, 60, 80, 100, 120 RPM) and blade angles of 22.5°, 35°, 40°. Torque data was collected after achieving convergence. The results showed the highest torque at 22.5° blade angle and 80 RPM speed, amounting to 2.4 N.m, and efficiency of 57.90% at 120 RPM. Researchers concluded that the decrease in torque is caused by the increase in vortex flow, reducing interaction between the blade and fluid after 80 RPM, while the increase in torque before 80 RPM is due to minimal swirling in the basin.
ANALISIS VARIASI KEMIRINGAN SUDUT TURBIN SINGLE BLADE TERHADAP EFISIENSI DAN DAYA PADA ARCHIMEDES SCREW MENGGUNAKAN COMPUTIONAL FLUID DYNAMICS (CFD) Ahmad, shofiyuddin Ali; Fajarningrum, Nurmala Dyah; Iswahyudi, Sigit
ELEMEN : JURNAL TEKNIK MESIN Vol. 11 No. 2 (2024)
Publisher : POLITALA PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34128/je.v11i2.291

Abstract

The potential for renewable energy in Indonesia is abundant, such as water energy. This energy potential can be used for Micro Hydro Power Plants (PLTMH). This study aims to study the effect of turbine head angle and screw angle parameters on the efficiency and power of screw-type water turbines. The angles used are turbine shaft angles of 20 °, 25 °, and 30 ° at screw angles of 22 ° and 26 °. Then a design was made using Autodesk Inventor and then simulated using Ansys software. The results of the study showed that the greatest power and the greatest turbine efficiency were obtained at a screw angle of 26 ° with a turbine shaft angle of 30 ° with a power value of 80072.98 watts and an efficiency of 95.37%. While the lowest power and efficiency were at a screw angle of 22 ° and a shaft angle of 20 ° with a power value of 72643.44 watts with an efficiency of 86.52%. So from this research, it was found that the good angle value is at the variation of the thread angle of 26° and the turbine shaft angle of 30°.
ANALISIS VARIASI KEMIRINGAN SUDUT TURBIN SINGLE BLADE TERHADAP EFISIENSI DAN DAYA PADA ARCHIMEDES SCREW MENGGUNAKAN COMPUTIONAL FLUID DYNAMICS (CFD) Ahmad, shofiyuddin Ali; Fajarningrum, Nurmala Dyah; Iswahyudi, Sigit
ELEMEN : JURNAL TEKNIK MESIN Vol. 11 No. 2 (2024)
Publisher : POLITALA PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34128/je.v11i2.291

Abstract

The potential for renewable energy in Indonesia is abundant, such as water energy. This energy potential can be used for Micro Hydro Power Plants (PLTMH). This study aims to study the effect of turbine head angle and screw angle parameters on the efficiency and power of screw-type water turbines. The angles used are turbine shaft angles of 20 °, 25 °, and 30 ° at screw angles of 22 ° and 26 °. Then a design was made using Autodesk Inventor and then simulated using Ansys software. The results of the study showed that the greatest power and the greatest turbine efficiency were obtained at a screw angle of 26 ° with a turbine shaft angle of 30 ° with a power value of 80072.98 watts and an efficiency of 95.37%. While the lowest power and efficiency were at a screw angle of 22 ° and a shaft angle of 20 ° with a power value of 72643.44 watts with an efficiency of 86.52%. So from this research, it was found that the good angle value is at the variation of the thread angle of 26° and the turbine shaft angle of 30°.
PENGARUH VARIASI DESAIN SUDU TERHADAP KARAKTERISTIK HIDRODINAMIKA TURBIN AKSIAL VORTEX ULTRA LOW HEAD MENGGUNAKAN METODE CFD Khanif, Masnurojak Bin; Rahman Saleh, Arif; Fajarningrum, Nurmala Dyah; Sulistiyo, Raka Mahendra
ELEMEN : JURNAL TEKNIK MESIN Vol. 11 No. 1 (2024)
Publisher : POLITALA PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34128/je.v11i1.279

Abstract

Renewable energy is being developed by many advanced countries due to its positive impacts. Indonesia has a high potential for hydropower generation using axial vortex turbines, which are effective at low head heights. Researchers use experimental methods, employing CFD simulations with specific boundary conditions. In one blade variation, testing was conducted 18 times with speed variables (20, 40, 60, 80, 100, 120 RPM) and blade angles of 22.5°, 35°, 40°. Torque data was collected after achieving convergence. The results showed the highest torque at 22.5° blade angle and 80 RPM speed, amounting to 2.4 N.m, and efficiency of 57.90% at 120 RPM. Researchers concluded that the decrease in torque is caused by the increase in vortex flow, reducing interaction between the blade and fluid after 80 RPM, while the increase in torque before 80 RPM is due to minimal swirling in the basin.
Co-Authors Ahmad, shofiyuddin Ali Budi Prasetyo Dedy Kurniawan Deendarlianto Fahadha, Rizqa Ula Khanif, Masnurojak Bin M. Fendy Kussuma Hadi Sufyan Rahman Saleh, Arif Raka Mahendra Sulistiyo Sigit Iswahyudi Trisma Jaya Saputra