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All Journal Turbo : Jurnal Program Studi Teknik Mesin Journal of Engineering and Applied Technology Journal of Mechanical Engineering and Applied Technology
Arif Hidayat
Politeknik LPP, Jl. Politeknik LPP 1A Balapan, Yogyakarta 55222
Automotive Engineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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Analisis karakteristik aerodinamika telescopic wing dengan konfigurasi sayap flying wing dan glider menggunakan metode pendekatan simulasi CFD Azmi, Azhim Asyratul; Hariyanto, Satriawan Dini; Hidayat, Arif
TURBO [Tulisan Riset Berbasis Online] Vol 10, No 1 (2021): Jurnal TURBO Juni 2021
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v10i1.1340

Abstract

A telescopic wing is a shape-changing method of the aircraft wing known as the morphing wing system. Wingspan extends capability on telescopic wing increasing the aspect ratio to get a high lift force. The telescopic wing on a flying wing configuration as an external wing and glider wing as an internal wing can be used to increase the coefficient lift (CL) when carrying out special missions. The aerodynamic characteristics using the Computational Fluid Dynamic (CFD) simulation approach is presented. For the 40% internal wingspan, the highest CL increment was 12.9% at a 10o angle of attack. For the 50% internal wingspan, the highest CL increment was 14.9% at a 10o angle of attack. on the 40% internal wing, the highest coefficient drag (CD) increment was 4.7%, and the largest CD increment on 50% internal was 9.5% at the angle of attack of 20o. The pressure distribution along the internal wingspan was uneven from an angle of attack of 15o due to the wing tip vortices of the external wing. Streamline pattern shown a bubble separation from the leading edge at an internal wing root by external wing tip vortices.Keywords: Morphing wing, telescopic wing, flying wing, glider
Applied energy and mass balance optimization re-engineering: case on Industri Gula Glenmore, Ltd. Saptyaji Harnowo; Arif Hidayat; Ramit Gupta
Journal of Engineering and Applied Technology Vol 3, No 2 (2022): (August)
Publisher : Faculty of Engineering, Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jeatech.v3i2.52403

Abstract

The Glenmore Sugar Industry, Ltd. is designed for 8000 TCD production or 273 TPH. The process required approximately 136 TPH based on the Steam on Cane (SoC) 50%. As the factory's primary input, Sugar Cane cannot supply 8000 TCD Factory Capacity, so 6000 TCD is chosen as an alternative. After commissioning, a lack of steam for servicing the process occurred because the Turbine at full load required 7,6 Kg/kWh. Desuperheater supports the additional steam for the process, which is only 20 TPH. Meanwhile, the steam from the turbine supplies 84 TPH. The need for 32 TPH must be solved, and a specific strategy should be prepared. The Applied Thermodynamics Re-Engineering is a potential method that can be applied in which the findings show that the deficit of 32 TPH steam for the process can be solved precisely.
Energy balance analysis on Rimbo Dua palm oil Arif Hidayat; Ari Wibowo; Saptyaji Harnowo
Journal of Engineering and Applied Technology Vol 2, No 1 (2021): (March)
Publisher : Faculty of Engineering, Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jeatech.v2i1.39630

Abstract

Palm Oil Mill is an industry that uses biomass as an energy generator to run the process. The biomass used is fiber, shells, and empty fruit bunches. Energy efficiency is needed in the process; therefore, it requires energy balance in the power generation system, distribution, and use of energy produced by biomass. PKS Rimbo Duo has a processing capacity of 30 tonnes/hour. Broadly speaking, the energy system at PKS Rimbo Dua includes steam energy production equipment such as boilers and steam and electricity energy conversion equipment in the form of steam turbines and generators (alternators) as well as storage equipment for the expansion of steam energy in the form of opposing pressure storage vessels (BPV). Energy balance analysis is carried out by analyzing data methods obtained from the performance of operating equipment and conducting field surveys and measurements of predetermined parameters, especially in boilers, water treatment, and turbines. Analysis of fuel use is also carried out to determine the quality of the fuel and the potential for steam produced. The result of this research is that the average efficiency of the boiler is 63.23%, which is still below the 73% boiler design. One of the reasons is that the flue gas temperature reaches 260 oC. The steam turbine has an efficiency of 44% isentropically with SSC = 31.9 kg / kWh when compared to the standard norm, the SSC value is still too high. The results of the water analysis also found the P and M alkalinity values, and the water pH was still 9.8. The results of the analysis of these data can be used as a reference for actions whether it is a repair of equipment, replacement of equipment, and improvement of operational parameters.
Rancang Bangun dan Analisis Screen Cutting Machine Guna Meningkatkan Produktivitas Pemotongan Timotius Anggit Kristiawan; Alfiando Satrio Wibowo; Arif Hidayat
Journal of Mechanical Engineering and Applied Technology Vol 1, No 1 (2023): Volume 1 Issue 1 Year 2023 (March 2023)
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/jmeat.v1i1.4720

Abstract

The material cutting process can be done with a variety of mechanical power options that can be used, ranging from manual cutting methods that require manual skills, to semi-automatic and automatic cutting that utilize advanced technology to increase efficiency and accuracy. The process of cutting materials at PT Suri Tani Pemuka is still done manually, by relying on the skills of the workers' hands. The impact resulting from the manual cutting process is that the cutting results are not according to the standard size determined by the company, so that there are still many NG products found from the cutting process. Based on these problems, it is necessary to have a solution, namely by designing a screen cutting machine to increase cutting productivity. The methods used in this research include Identification of need, Definition of problem, Synthesis, Analysis and Optimization, Evaluation, and Presentation. The test was carried out to test the quality of the screen cut results. The results obtained from this study are screen cutting machines for cutting screen equipment with an increase in the percentage of successful screen cutting by 33.3% from 50% to 83.3%.
Co-Authors Alfiando Satrio Wibowo Azmi, Azhim Asyratul Hariyanto, Satriawan Dini Ramit Gupta Saptyaji Harnowo Saptyaji Harnowo Timotius Anggit Kristiawan Wibowo, Ari