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All Journal Jurnal Teknosains SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Prosiding Semnastek International Conference on Coastal and Delta Areas R.E.M (Rekyasa Energi Manufaktur) Jurnal Rekayasa Teknologi Jurnal SOLMA Prosiding Seminar Nasional Teknoka Dinamisia: Jurnal Pengabdian Kepada Masyarakat JURNAL KAJIAN TEKNIK ELEKTRO Teknobiz : Jurnal Ilmiah Program Studi Magister Teknik Mesin Bantenese Jurnal Pengabdian Masyarakat SULUH: Jurnal Abdimas Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi Motor Bakar : Jurnal Teknik Mesin Jurnal Pengabdian kepada Masyarakat Nusantara Jurnal Pengabdian Masyarakat Asia Jurnal Mesin Nusantara Sawala : Jurnal pengabdian Masyarakat Pembangunan Sosial, Desa dan Masyarakat DEVICE Jurnal Polimesin Metalik: Jurnal Manufaktur, Energi, Material Teknik
Oktarina Heriyani
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Religion Aerospace Engineering Arts Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Library & Information Science Materials Science & Nanotechnology Mechanical Engineering Social Sciences Transportation Other

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Evaluating Wind Deflector Effect on Cargo Vans Aerodynamic Drag Using Computational Fluid Dynamics Agus Fikri; Riyan Ariyansah; Firman Noor Hasan; Oktarina Heriyani; Rosalina; Muhammad Ghiffar Sistani
Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi Volume 6 Nomor 2 Tahun 2024
Publisher : Fakultas Teknik Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/asiimetrik.v6i2.6073

Abstract

Suboptimal design and body shape in freight transport vehicles can lead to increased aerodynamic drag. To address this issue, the use of wind deflectors is proposed as a solution to reduce aerodynamic resistance in cargo vans. The methodology employed in this research involves Computational Fluid Dynamics (CFD) simulations using the Ansys Fluent R2 2023 software. CFD simulations were conducted on the design of a cargo box vehicle with variations in Wind Deflector Models 1, 2, and 3, employing identical boundary condition parameters. The results of the CFD simulation for Wind Deflector Model 3 exhibited the lowest drag force at 1.1531116 Newton and a drag coefficient of 0.37031338. In conclusion, a comprehensive analysis of the CFD simulation results provides valuable insights into the intricate aerodynamic implications of Wind Deflector variations on cargo vans. Therefore, it is concluded that Wind Deflector Model 3 emerges as the optimal choice, showcasing superior aerodynamic characteristics.
Analysis of Vibration Characteristics in 17-Inch Aluminum Alloy Wheel Rims Using Finite Element Method Victor Indra Wijaya; Riyan Ariyansah; Delvis Agusman; Rifky; Oktarina Heriyani
Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi Volume 6 Nomor 2 Tahun 2024
Publisher : Fakultas Teknik Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/asiimetrik.v6i2.6620

Abstract

The wheel rim serves as a component designed to provide stability and necessary support for vehicle tires. The phenomenon of resonance occurring when the external vibration frequency approaches the natural frequency of the structure has the potential to increase vibration amplitude, which can lead to wheel rim damage. This study aims to investigate the shape patterns and natural frequencies of 17-inch aluminum alloy wheel rims, as well as to analyze the maximum total deformation that occurs. The finite element method is employed to simulate the vibration characteristic of 17-inch aluminum alloy wheel rims under various natural frequencies. Modifications to the wheel rim design are made by altering the spoke angle in variations of 5°, 10°, and 15°. The vibration characteristic data of the wheel rim was obtained through simulation using ANSYS software. The research findings indicate that the natural frequencies range from approximately 364.7 Hz to 723.21 Hz. Furthermore, the maximum total deformation values range from approximately 9.7 mm to 22.5 mm.
Convective Coefficient and Evaporative in Forced Flow Solar Still Akbar Oktavian; Dan Mugisidi; Rizky Alamsyach; Oktarina Heriyani
Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi Volume 6 Nomor 2 Tahun 2024
Publisher : Fakultas Teknik Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/asiimetrik.v6i2.6937

Abstract

The water crisis is a significant global problem, with more than 2 billion people lacking water and 1.1 billion having no access to clean water. Desalination, a method of converting seawater into fresh water by removing salt, is a potential solution to help coastal populations. This study aims to determine the convection and evaporation heat transfer coefficients and the effect of condenser cooling water temperature on the evaporation process and the increase in freshwater condensate. The research methodology involved the analysis of heat and mass transfer in a solar desalination system. A desalination device was designed to test the evaporation process with seawater temperature heated using halogen lamp light. Results show that increasing seawater temperature from 27°C to 42°C results in condensation when the temperature reaches about 30°C, affecting the water surface pressure and evaporation rate. Evaporation and condensation efficiencies are affected by convection and evaporation heat transfer, resulting in a convection heat transfer (0.84296 W/m2. °C) and evaporation heat transfer coefficient (23.81353 W/m2.°C). This research demonstrates the potential of solar desalination technology in producing clean water.
AERODYNAMIC ANALYSIS OF WIND DEFLECTOR DESIGN ON PICK UP BOX CARS BASED ON CFD Imam Krismunandar; Oktarina Heriyani
Teknobiz : Jurnal Ilmiah Program Studi Magister Teknik Mesin Vol. 16 No. 2 (2026): Teknobiz
Publisher : Magister Teknik Mesin Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/my90pk32

Abstract

This study aims to analyze the effect of adding a wind deflector on the aerodynamic performance of a pick-up box truck using the Computational Fluid Dynamics (CFD) method. The primary issue with this type of vehicle is the significant pressure drag caused by the height difference between the cabin and the cargo box. Simulations were conducted using ANSYS Fluent software with the k-epsilon turbulence model on two configurations: a standard model and a model equipped with a wind deflector. The simulation results show that the standard model experiences significant flow separation in the gap between the cabin and the box, resulting in a drag coefficient ($C_d$) of 0.5239 and a drag force ($F_d$) of 2.904 N. Following the application of the wind deflector, the airflow becomes more streamlined and the separation point is minimized, reducing the $C_d$ value to 0.4240 and $F_d$ to 2.347 N. This study concludes that the use of a wind deflector can provide a drag force reduction of 19.19%, indicating a significant improvement in the vehicle's aerodynamic efficiency.
Effect of Low Partial Vacuum on Evaporation and Condensation Performance in a Solar Still System Irfan Maulana Yusuf; Dan Mugisidi; Oktarina Heriyani; Sofia Pinardi; Nunik Pratiwi
Jurnal ASIIMETRIK Jurnal Ilmiah Rekayasa & Inovasi Volume 8 Number 2 (2026)
Publisher : Fakultas Teknik Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/asiimetrik.v8i2.10039

Abstract

This study investigates the effect of low partial vacuum on the evaporation and condensation performance in a solar still system. The tests were conducted using three variations: non-vacuum (101325 Pa), vacuum 1 (101313 Pa), and vacuum 2 (101309 Pa) using an exhaust system. The observed parameters included water temperature, pressure, vapor pressure difference (ΔP), evaporation mass, and condensation yield. The results showed that low partial vacuum increased the vapor pressure difference, thereby enhancing the driving force for evaporation. The highest maximum ΔP value was obtained at vacuum 2, at 1278.48 Pa. However, water temperature had a more dominant influence on total evaporation, so the highest cumulative evaporation mass was obtained under non-vacuum conditions at 8750 g due to better thermal energy retention. Meanwhile, vacuum 1 produced the highest condensation yield of 7641 g, indicating a balance between vapor formation and vapor distribution within the system. These findings suggest that the optimization of a solar still based on low partial vacuum is determined not only by an increase in vapor pressure difference but also by the system’s ability to retain thermal energy and the effectiveness of the condensation process .
Co-Authors Abdul Rahman Abdul Rahman Soleh Pohan Adittia Fajar Afandi, Rizki Afif Agus Fikri Agus Fikri Agus Fikri Ahmad Ramdhani, Ahmad Aji, Ikbal Prasetiyo Akbar Oktavian Akhiruddin Maddu Akhmad Rizal Dzikrillah Alamsyach, Rizky Aldi fadillah Ashar, Ilham Ariawan Atiqah Mutia Avorizano, Arry Cahyani, Regita Septia Choirul Prayoga Dan Mugisidi Deka Rama Ligustian Delvis Agusman Delvis Agusman Dimas Ramadhan Putra Dimas Ramadhan Putra Dwi ASTUTI Dzikrillah, Achmad Rizal Eddy Ramdan Eef syaifuloh Emilia Roza Enrico Chiesa Virgianto Fadhlurrahman Zaki Fahmi, Muhammad Idrokul Faldy Irwiensyah Farhan Putra Arya, M. Iqbal Faturahman, Hamdi Fauzi, Herman Fikri, Agus Firman Noor Hasan Hamdi Faturahman Hamdi Faturohman Hamzah, Arif Hangga Putra Prabawa Harry Ramza Hendi Saryanto Hilmi, Irfan Ikbal Prasetiyo Aji Imam Krismunandar Irfan Maulana Yusuf Jhav Sund Oktoricoento Luhung, Rizal Andi M Mujirudin M. Mujirudin M.Kom, Sugema Mohammad Mujirudin Mohammad Yusuf D Muhammad Ghiffar Sistani Muhammad Ramdani Muhammad Rayhan Muhammad Zahir Bahasyim Mujirudin, Mohammad N, Kevin Sigit Dwi Nofendri, Yos Nugroho, Agung Nunik Pratiwi Nurfadillah, Zaka Nurkholid, Nurkholid Oktavian, Akbar Oktoricoento, Jhav Sund Pancatatva Hesti Gunawan Pangestu, Anugrah Widhi Parwatmoko, Giri Ramadan, Hamdan Ramza, Harry Regita Septia Cahyani Reza Ferizal Akbar Rifky, Rifky Riyan Ariyansah Rizal Andi Luhung Rizky Alamsyach Rosalina Rosalina Rozaki, Syahrul Maulana Safi'i, Muhamad Sahrudin Sahrudin Sahrudin Sahrudin Sahrudin, Sahrudin Saputra, Muhamad Juli Sayuti, Adi Tegar Sistani, Muhammad Ghiffar Sofia Pinardi Soleh Pohan, Abdul Rahman Sugema Sugema M.Kom Suheri Kertosenjoyo2, Suheri Sulistiono, Ibnu Supardi Atisina Susanto Susanto Tegar Imaniar Kusnanto Victor Indra Wijaya Widodo Widodo Wijaya, Victor Indra Wirangga, Ristanto Yafid Effendi Yoga Aditya Yulikastomo yusuf, Ahmad Maulana Zaka Nurfadilah