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CFD-Based Thermohydrodynamic Analysis of Vegetable Oil Lubricants in Journal Bearings Muchammad; Budi Setiyana; Agus Suprihanto; Achmad Widodo
Advance Sustainable Science Engineering and Technology Vol. 8 No. 3 (2026): May - July
Publisher : Science and Technology Research Centre Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/asset.v8i3.3607

Abstract

This study investigates the thermohydrodynamic performance of journal bearings lubricated with palm trimethylolpropane (TMP) ester as a biolubricant, compared to conventional engine oil, using computational fluid dynamics (CFD) in ANSYS Fluent. The objective is to evaluate the influence of lubricant type on pressure distribution, load carrying capacity, friction force, and cavitation behavior. The results show that palm TMP ester generates higher hydrodynamic pressure while maintaining a similar pressure distribution pattern to engine oil. The load carrying capacity increases significantly by approximately 493% at 48 rad/s and 343% at 68 rad/s compared to engine oil. However, this improvement is accompanied by an increase in friction force of about 280% and 234% at the respective speeds due to higher viscosity. In addition, the vapor volume fraction ranges from 0.69 to 0.73, indicating cavitation, with palm TMP ester showing a slightly higher tendency. These findings demonstrate a trade-off between enhanced load support and increased friction, highlighting the potential of palm TMP ester as an environmentally friendly lubricant for hydrodynamic bearing applications.
Co-Authors . Widayat Achmad Widodo Adriathma, Abduh Bayu Agus Hariyanto Ako, Henry Al Azis, Bimasakti Sulthan Anak Agung Gede Sugianthara Andhika Krismaintya Putera Andika Pradifan Andrew Bryano Kermite, Andrew Bryano Andri Cahyo Kumoro Aries Susanty Azwinur Azwinur Basyith, Mohammad Rizqi Abdul Berlin, Rilo Budi Setiyana Budi Setyana Butarbutar, Martin Canggih Nugroho Catur Pramono Dianto, Wahyu Djoeli Satrijo Djoeli Satrijo Dwi Basuki Wibowo Dwi Basuki Wibowo Eko Surojo Eko Surojo Faisal Yusuf Tornado Ferry Hermawan Gunawan Dwi Haryadi H Hadiyanto Hamdani Hamdani Hanif, Dimas Naufal Hanifa, Kana Harianto Harianto Henri Fatih Wibowo Ian Yulianti IGN Wiratmaja Puja Indrawan, Harry Ismoyo Haryanto Jericho Jericho Kamta Kamta Khoiri Rozi Khoiri Rozi Kusuma, Mukhsinun Hadi Miftachul Munir Mika Patayang, Mika Muchammad Muchlas Rastra Samara Muksin Muhammad Fajar Purnama Muhammad Fakhri Aji Pratomo Musashi, Ota Nugraha, Ariyana Dwiputra Nur Aziyah Nur Cahyo Ojo Kurdi P Wahyudi Parven, Parven Paryanto, P Prakoso, Ivan Setyo Pratomo, Muhammad Fakhri Aji Purbonugroho, Hanindhieto Dias Andra R Rizal Isnanto Reza, Reza Rochim Suratman Rusman Rusman Setyawan Bekti Wibowo Sianipar, Daniel Sigit Iswahyudi Siti Aisyah Soesanto, Indra Harfani Sukamta Sukamta Sulardjaka Sulardjaka Sulardjaka, S Sumardi . Sumarji Surya Dharma Susilo Adi Widyanto Sutopo, Farrel Rico Alifta Suyitno Suyitno Teguh Triyono Tomy Satya Usman Usman Wahyudianto, FX. Arif Waruwu, Kezia Gracelynn Wijaya, Elang Pramudya Yatim, Ardiyansyah Saad Yurianto Yurianto Yusuf Umardani Yusuf Umardhani