Article Per Year (5 Year)
p-Index From 2020 - 2025
1.959
P-Index
This Author published in this journals
All Journal Rotasi Simetris Jurnal Teknik Mesin Jurnal Elemen Jurnal E-Komtek Journal of Mechanical and Electrical Technology Gudang Jurnal Multidisiplin Ilmu Jurnal Inovasi Global Mars: Jurnal Teknik Mesin, Industri, Elektro dan Ilmu Komputer International Journal of Mechanical, Industrial and Control Systems Engineering
Raka Mahendra Sulistiyo
Universitas Tidar
Religion Aerospace Engineering Arts Humanities Astronomy Automotive Engineering Chemical Engineering, Chemistry & Bioengineering 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 Languange, Linguistic, Communication & Media Mathematics Mechanical Engineering Public Health Social Sciences Other

Published : 13 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 13 Documents
Search

 1   2 
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.
Prototype of an Arduino-Based 3D Scanner Printed Using 3D Printing Ikhwan Taufik; Elvanes Betel Bangun; Raka Mahendra Sulistiyo; El Vionna Laellyn Nurul Fatich
Jurnal E-Komtek (Elektro-Komputer-Teknik) Vol 8 No 1 (2024)
Publisher : Politeknik Piksi Ganesha Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37339/e-komtek.v8i1.1829

Abstract

Three-dimensional (3D) scanning technology is pivotal in manufacturing, product design, and architecture, enabling precise digital reconstructions of real-world objects. However, existing 3D scanners are often costly and complex, hindering accessibility. To address this, our study presents a cost-effective 3D scanning system using Arduino technology. Utilizing an Arduino Nano, GP2Y0A21YK0F IR Sensor, stepper motors, motor drivers, and an SD card module, our system offers a simple solution for scanning small objects and creating 3D models. The scanner measures object distance, rotates a work table, and captures scan data, processed with MeshLab software. Successful scanning demonstrates affordability and automation. Future work will focus on optimizing accuracy and scanning speed.
Analisa Aliran Fluida pada Gas-Solid V Shaped Fluidized bed Reaktor dengan Computational Fluid Dynamics (CFD) Sulistiyo, Raka Mahendra
SIMETRIS Vol 17 No 1 (2023): Simetris
Publisher : Sekolah Tinggi Teknologi Ronggolawe Cepu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51901/simetris.v17i1.324

Abstract

The use of gasification to deal with waste problems is an important issue of environmental conservation. One of the important components in the gasification system is the reactor design and one commonly used is the fluidized bed reactor. The use of a fluidized bed reactor requires solid particles in the form of powder. The V-shaped reactor design was used with laboratory scale sizes with variations in particle diameter, 0.3 mm, and 0.4 mm. Variations in the inlet gas velocity are 0.2 m/s, 0.3 m/s, 0.8 m/s. Computational Fluid Dynamic (CFD) simulation method in 2 dimensions is used to analyze the existing variables. With these variations, a fluid bed condition has occurred. Produced with a larger particle diameter tends to produce smaller bubbles. The inlet gas velocity of 0.2 m/s produces bigger bubbles than 0.3 m/s, while 0.8 m/s does not produce bubbles.
Analisa Kecelakaan Impact Baut Terhadap Safety Helmet Menggunakan Pendekatan Explicit Dynamic Sulistiyo, Raka Mahendra; Sulardjaka, Sulardjaka; Purwaningsih, Ratna
ROTASI Vol 27, No 1 (2025): VOLUME 27, NOMOR 1, JANUARI 2025
Publisher : Departemen Teknik Mesin, Fakultas Teknik, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/rotasi.27.1.29-35

Abstract

Sistem manajemen keselamatan, Kesehatan kerja dan lingkungan (SMK3L) menjadi prioritas implementasi disetiap pripadi agar terlindungi dari segala potensi bahaya kecelakaan kerja. Implementasi SMK3L ini diterapkan dalam pekerjan proyek pembangunan pembangkit listrik yang berupa penggunaan Safety helmet sebagai proteksi kepala. Safety helmet ini digunakan untuk melindungi kepala dari benturan benda jatuh dari ketinggian. Pengujian Safety helmet ini menjadi penting untuk diteliti. Metode yang dilakukan adalah simulasi impact berbasis komputer dengan program computational aided engineering menggunakan explicit dynamic. Safety helmet yang digunakan memiliki model seperti yang ada pada proyek dengan bahan polypropylene. Material impact yang digunakan adalah mur dan baut structure steel tipe M16 pada ketinggian 30m dengan kecepatan 24,26 m/s. Hasil yang diperoleh yaitu helm tertumbuk oleh mur dan banut dengan arah deformasi maksimum sebesar 15,2mm pada sumbu x, rata- rata total deformasi sebesar 30mm, maksimum Equivalent stress sebesar 2101,7 MPa, maksimum Equivalent strain sebesar 1,44 mm/mm. Safety helmet terdapat patah di sisi sebelah kanan dan kiri akibat dari benturan
Design Analysis of a Disabled Tricycle Electric Bike Frame Using Finite Element Analysis (Fea) Pratama, Hidayat; Hilmy, Fuad; Sulistiyo, Raka Mahendra; Salahudin, Xander
Jurnal Teknik Mesin (Journal Of Mechanical Engineering) Vol 14, No 1 (2025)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/jtm.v14i1.31483

Abstract

Mobilization is very important to meet the needs that require someone to move or travel, especially for the disabled. One solution to help the disabled is to design flexible and safe vehicles for them. To find out whether the design is safe or not is by simulation Finite Element Analysis (FEA). This study was conducted to analyze three designs of electric bicycle frames for the disabled made using Solidworks software which is then simulated using Ansys Workbench software which produces output in the form of valuesvon mises stress, deformation, and safety factor. The selection of this design is based on simulation results which show that the von mises stress obtained was 62,669 MPa, its maximum deformation value of 0.32879 mm, and safety factor obtained a value of 6.6221. This simulation uses a load of 80 kg and there is an additional battery at the bottom weighing 10 kg. The simulation results show that design 3 provides the best performance, this is because the design obtains safety factor highest.
Application of Gravity Force on Banana Cutting Machines Nur Hayati; Raka Mahendra Sulistiyo
International Journal of Mechanical, Industrial and Control Systems Engineering Vol. 2 No. 2 (2025): June :IJMICSE: International Journal of Mechanical, Industrial and Control Syst
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/ijmicse.v2i2.298

Abstract

Indonesian people love to consume bananas as fruit. Many sources of nutrients, including minerals and carbohydrates, are contained in this fruit. Various UMKM (Usaha Mikro, Kecil dan Menengah) have grown by developing processed banana foods such as sale and banana chips. An important step in making processed banana dishes is cutting the bananas. In general UMKM still process bananas using conventional techniques, namely cutting using manual human power. The purpose of this study is to utilize gravity to design a banana cutting machine. Gravity will cause the banana pieces to fall into the storage container. The dimensions of the cutting machine are designed with a small size to facilitate mobility. The results showed that the use of a cutting machine increased the efficiency of banana cutting. A more uniform cutting thickness was achieved.
PENGARUH KONSENTRASI HCl DALAM PROSES HIDROLISIS PADA PEMBUATAN BIOETANOL KULIT PISANG KEPOK Alfiansyah, Irsyad; Mujiarto, Sigit; Sulistiyo, Raka Mahendra; Dewi, Rany Puspita
ELEMEN : JURNAL TEKNIK MESIN Vol. 12 No. 1 (2025)
Publisher : POLITALA PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34128/je.v12i1.300

Abstract

Dependence on fossil fuels results in depletion of petroleum. In solving this problem, it is necessary to use alternative fuels in the form of bioethanol. Bioethanol is made by utilizing kepok banana peels. There are quite a lot of banana peels, approximately one third of the bananas that have not been peeled. This study was conducted to analyze the ethanol content, water content, density, and viscosity of kepok banana peel bioethanol. This study uses an experimental method of the effect of HCl concentration (2%, 5%, and 8%) in the hydrolysis process in the manufacture of kepok banana peel bioethanol. From the results of the study, the best bioethanol characteristics at a concentration of 2% HCl with an ethanol content of 9%, a water content of 70.52%, a density of 0.9861 g/ml, and a viscosity of 0.010768212 dPa.s. The characteristics of the bioethanol produced are different from the characteristics of pertalite.
Rancangan Optimal Oven Microwave untuk Peningkatan Efisiensi Pengeringan Maggot Menggunakan Simulasi CFD Rian Setiawan; Arif Rahman Saleh; Raka Mahendra Sulistiyo
Mars : Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer Vol. 3 No. 3 (2025): Juni : Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer
Publisher : Asosiasi Riset Teknik Elektro dan Informatika Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/mars.v3i3.917

Abstract

Maggots are larvae of the Black Soldier Fly (BSF) which have benefits as waste decomposers and have high potential as feed ingredients. This study aims to analyze the effect of power and time on maggot drying using microwaves. Using the Computational Fluids Dynamics (CFD) method on microwave heating with a power of 2000 watts and 2500 watts, and a residence time of 10 minutes, 20 minutes, and 30 minutes, then the final maggot temperature was tested. The results showed that the final temperature of the maggot tended to increase with increasing power and residence time. This happens because high microwave power provides large energy in a very short time. This energy is efficiently absorbed by maggots through the mechanism of dipole rotation and ionic conduction, causing molecules to vibrate and rub with high intensity. The final temperature of the maggot is between 110oC-125 oC with the highest temperature at a power of 2500 and a drying time of 30 minutes.
Analisis Kekuatan Struktur Sistem Penyimpanan Syngas dengan Metode Finite Element Analysis Erdianto, Diva Arief; Mujiarto, Sigit; Sulistiyo, Raka Mahendra; Saleh, Arif Rahman; Setiyawati, Tri Retno
Jurnal Inovasi Global Vol. 3 No. 6 (2025): Jurnal Inovasi Global
Publisher : Riviera Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58344/jig.v3i6.356

Abstract

Penggunaan bahan bakar fosil seperti diesel sebagai sumber energi utama untuk kebutuhan sehari-hari maupun industri menghadapi tantangan tersendiri, seiring dengan meningkatnya kebutuhan energi dan menipisnya cadangan bahan bakar fosil yang ada. Mesin diesel dual fuel (DDF) dengan syngas dari gasifikasi biomassa sebagai bahan bakar sekunder merupakan solusi yang potensial. Penelitian ini bertujuan untuk merancang dan mengetahui kekuatan struktur sistem penyimpanan syngas menggunakan metode pemodelan dengan perangkat lunak SolidWorks 2024 dan simulasi berbasis analisis elemen hingga (FEA). Berdasarkan penelitian diperoleh desain tangki berbentuk silinder dengan penutup elipsoidal yang menggunakan material SA516-70, dengan dimensi diameter dalam 248 mm, ketebalan dinding 2,22 mm, dan panjang 340 mm, serta rangka dari baja tahan karat A316 dengan ukuran 987,4 × 384,8 × 843,45 mm. Hasil simulasi menunjukkan tegangan von Mises sebesar 94 MPa, displacement sebesar 0,003869 mm, dan faktor keamanan sebesar 2,8 untuk tangki, serta tegangan von Mises sebesar 5,882 MPa, displacement sebesar 0,182 mm, dan faktor keamanan sebesar 29 untuk rangkanya. Simulasi hidrostatik pada tangki menghasilkan tegangan von Mises maksimum sebesar 69,91 MPa dan displacement sebesar 0,00719 mm. Hasil ini menunjukan bahwa desain tangki dan rangka dianggap aman.
Analisis Penggunaan Blower Terhadap Desain Kenyamanan Termal Rumah Instan Sederhana Sehat di Kota Surakarta Dengan Metode Computational Fluid Dynamics (CFD) Pramudya, Ardhana Raka; Riyanto, Wahyu; Hilmy, Fuad; Sulistiyo, Raka Mahendra
Metrotech (Journal of Mechanical and Electrical Technology) Vol 4 No 3: September 2025
Publisher : Fakultas Sains dan Teknologi, UNIRA Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70609/metrotech.v4i3.7258

Abstract

Kenyamanan termal merupakan aspek krusial dalam mendukung kesehatan dan produktivitas penghuni, terutama di wilayah tropis yang terdampak fenomena Urban Heat Island (UHI). Penelitian ini bertujuan menganalisis performa termal bangunan Rumah Instan Sederhana Sehat (RISHA) di Kota Surakarta melalui simulasi numerik menggunakan metode Computational Fluid Dynamics (CFD) pada tanggal 9 Juli 2024. Fokus simulasi diarahkan pada dua konfigurasi utama dalam kondisi ventilasi terbuka, yaitu kondisi awal (original) tanpa intervensi, dan skenario penambahan fan berkecepatan 1350 rpm. Hasil simulasi menunjukkan bahwa pada kondisi awal, suhu rata-rata ruangan mencapai 31,68°C, yang berada di atas ambang batas kenyamanan termal. Setelah penambahan fan, suhu berhasil turun secara signifikan menjadi rata-rata 29,60°C, mendekati batas atas kategori hangat nyaman. Penurunan tidak terjadi drastis namun menunjukkan bahwa fan mampu meningkatkan efektivitas ventilasi alami dengan menciptakan aliran udara aktif, mempercepat sirkulasi, dan membantu membuang udara panas secara efisien ke luar ruangan Temuan ini membuktikan bahwa kombinasi antara ventilasi terbuka dan fan merupakan solusi termal yang efektif dan efisien dalam meningkatkan kenyamanan ruang pada bangunan modular tropis seperti RISHA. Strategi ini sangat relevan diterapkan di wilayah yang terdampak UHI, sebagai bentuk intervensi pasif-aktif untuk mempertahankan kenyamanan termal dalam kondisi lingkungan yang panas.
Co-Authors Alfiansyah, Irsyad Ardhana Raka Pramudya Arif Rahman Saleh Arif Rahman Saleh Dewi, Rany Puspita Diva Oktaviani El Vionna Laellyn Nurul Fatich Elvanes Betel Bangun Erdianto, Diva Arief Fajarningrum, Nurmala Dyah Frizaz Naufal Ahmad Zaki Fuad Hilmy Khanif, Masnurojak Bin Muhammad Rangga Putra A. Mukhammad Ragil Juniarta Nur Hayati Nuzulia Rahma Nisa’ Unnida Pramudya, Ardhana Raka Pratama, Hidayat Rahman Saleh, Arif Rani Herawati Ratna Purwaningsih Restu Septi Hariyanti Rian Setiawan Riyanto, Wahyu Septian Dwi Martono Setiyawati, Tri Retno Sigit Mujiarto Suci Lestari Sulardjaka Sulardjaka Taufik, Ikhwan Xander Salahudin