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All Journal Journal of Energy, Mechanical, Material and Manufacturing Engineering KURVATEK Prosiding Seminar Nasional Rekayasa Teknologi Industri dan Informasi ReTII
Harianto Harianto
Institut Teknologi Nasional Yogyakarta
Aerospace Engineering 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 Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Social Sciences Transportation

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Effect of Tapper Ratio on a Car Rear Spoiler Performance Harianto Harianto; Yosua Heru Irawan; Eka Yawara; Husni Bakhtiar
JEMMME (Journal of Energy, Mechanical, Material, and Manufacturing Engineering) Vol. 4 No. 1 (2019)
Publisher : University of Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/jemmme.v4i1.7982

Abstract

The increasing development of car modification and the lack of understanding on the function of using spoilers or rear wings on vehicles, underlies the research on the aerodynamic forces acting on cars. The influence of this aerodynamic device will produce a compressive force to the bottom of the vehicle or called downforce, where this force is greatly influenced by the CL (lift coefficient) value. The purpose of this study was to determine the effect of variations in the tapper ratio on the value of downforce and drag force on on single-element type spoilers made using a NACA 6412 airfoil. The research was conducted using the Computational Fluid Dynamic method using ANSYS Fluent software with steady state pressure based solver. In this study five variations of the tapper ratio were used, namely: 1:1; 1:0.5; 1:0.7; 0.5:1; and 0.7:1. The fluid properties used are adjusted to the climate and weather in general air conditions and at air flow speeds of 100 km/h. Based on the research conducted, it can be concluded that the highest lift coefficient value was achieved in the 1:1 tapper ratio variation which was equal to CL = -0.2275 and CD = 0.0195. The highest downforce value is achieved in the 1:1 tapper ratio variation that is equal to L = -107,529 N and the largest drag force value is also achieved in the 1: 1 tapper ratio variation that is equal to D = 9.2269 N. The best CL/CD results are obtained at the 1:05 tapper ratio variation with a value of 12.82.
Numerical Simulation of The Effect of Wind Velocity on The Diffuser Augmented Wind Turbines Performance Yosua Heru Irawan; Harianto Harianto
JEMMME (Journal of Energy, Mechanical, Material, and Manufacturing Engineering) Vol. 4 No. 2 (2019)
Publisher : University of Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/jemmme.v4i2.9931

Abstract

The study was conducted on GE 1.5 XLE wind turbine blades with a blade length of 4.32 m. This study uses a numerical simulation method with the help of ANSYS Workbench 19 software. Simulation is carried out at wind speeds of 3 m/s, 5 m/s, and 8 m/s. The DAWT (Difuser Augmented Wind Turbines) research model uses the same wind turbine blade as a conventional wind turbine model which is the same GE 1.5 XLE model. The size of the diffuser added to the construction of the wind turbine is 9 m in addition to flanged on the side of the inlet and outlet diffuser.Based on numerical simulations carried out, for wind speeds of 3 m/s, the highest increase in DAWT performance is 115.6%. For wind speeds of 5 m/s, the highest increase in DAWT performance is 99.2%. For wind speeds of 7 m/s, the highest increase in DAWT performance is 91.8%. Based on the simulation results it can be said that the addition of diffuser in the construction of wind turbines will produce effective performance at wind speeds of 3 m/s. The increase in DAWT performance is relatively small on TSR 1-4, and some even experience a decrease in performance. So that it can be said that DAWT is not suggested to be operated on a low TSR, DAWT is recommended to operate above TSR 5.
STUDI SIMULASI CFD PENGARUH LEBAR CORD SUDU NACA A 0015 TERHADAP POWER FACTOR TURBIN DARIEUS Harianto Harianto
KURVATEK Vol 4 No 1 (2019): Reka Ruang
Publisher : Institut Teknologi Nasional Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33579/krvtk.v4i1.1136

Abstract

AbstrakDiseluruh dunia khususnya di Indonesia saat sedang menghadapi permasalahan kebutuhan energi yaitu disebabkan oleh meningkatnya kebutuhan energi setiap tahunnya yang  sejalan dengan perkembangan industri, jumlah penduduk dan aktifitas manusia, sementara cadangan sumber energi bahan bakar minyak semakin menipis. Pengembangan  sumber energi alternatip saat ini  adalah sumber energi terbarukan yang diantaranya meliputi Solar cell, Turbin energi panas bumu, Turbin energi bayu , dan Turbin energi air . Turbin air Darrieus sumbu vertikal merupakan salah satu turbin air yang berpotensi untuk dikembangkan dan cocok untuk diterapkan pada aliran air sungai di Indonesi.Dalam penelitian ini telah dilakukan pembuatan model simulasi turbin Darieus sumbu vertikal dengan profil sudu NACA A0015 yang tergolong sebagai turbin mikrohidro kecepatan aliran. Diameter rotor 20 cm, 3 buah sudu dengan panjang sudu 25 cm dan variasi lebar cord 6, 7 dan 8 cm  serta  posisi sudut kemiringan sudu tangensial rotor -5o , dioperasikan pada   kecepatan aliran air 1.5 m/detik, yang dilakukan dengan simulasi 3d CFD FLUENT untuk mendapatkan besarnya coeffisien  torsi poros turbin , selanjutnya dilakukan analisis besarnya factor daya. Hasil penelitian ini menunjukkan bahwa  lebar cord 6 cm ( soliditas ) 0.2864 menghasilkan faktor  daya tertinggi sebesar 0.0447  pada putaran poros 160 rpm dan kecepatan air masuk turbin 1.5 m/detik. Abstract Throughout the world, especially in Indonesia when facing problems of energy needs, that is caused by increasing energy needs each year which are in line with the development of industry, population and human activities, while reserves of energy sources of fuel oil are depleting. The development of alternative energy sources is currently a renewable energy source which includes solar cells, hot energy turbines, wind energy turbines and water energy turbines. The vertical axis Darrieus water turbine is one of the water turbines that has the potential to be developed and is suitable to be applied to river water flows in Indonesia.In this research, a vertical axis Darieus turbine simulation model has been made with NACA A0015 blade profile which is classified as a microhydro flow velocity turbine. Rotator diameter 20 cm, 3 blade with 25 cm blade length and variation of cord width 6, 7 and 8 cm and position of rotor tangential angle of rotor -5o, operated at water flow velocity of 1.5 m / sec, which is done with 3D CFD FLUENT simulation to get the coefficient of turbine shaft torque , an analysis of the magnitude of the power factor is then performed. The results of this study showed that the cord width of 6 cm (solidity 0.2864) resulted in the highest power factor of 0.0447 at shaft rotation of 160 rpm and the speed of turbine intake water 1.5 m / sec. Keywords : Daarieus Turbine, NACA blade profile, Power coefficient. Cord width 
EFFECT OF AIR FLOW RATE ON AIR-LIFT- PUMP Amat Agus Salim; Edi Susanto; Daru Sugati; Harianto
KURVATEK Vol 7 No 2 (2022): Energy Management and Sustainable Environment
Publisher : Institut Teknologi Nasional Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33579/krvtk.v7i2.3777

Abstract

Airlift pump is a series of tools used to transport water and air cargo (muddy) from one place to another. The Airlift pump work system through the pipe media by injecting air into the channel under the submerged pipe. The air pressure from the aerator will push the air to move upward in the same direction through the pipe. Viscous liquids or sludge can be raised using an air-lift-pump. The buoyant force from the air can cause the heavy hydrostatic liquid to become smaller because the air used in the air-lift-pump is injected at the bottom of the pipe. This study used an experimental method by varying the air discharge ratio and using different air injectors. The purpose of this study was to determine the effect of variations in the injection discharge ratio on pump performance and to find the best efficiency for each variation made. The test was carried out with 3 different injector pipes (0.80 mm, 0.54 mm, 0.31 mm). The results showed that variations in the air discharge ratio greatly affect the efficiency and flow rate of water. The highest efficiency occurred in an injector with a diameter of 0.8 mm by 4.1% and the highest efficiency occurred in an injector with a diameter of 0.31 mm by 1.3%. Variation of air discharge with a greater value then the efficiency value will decrease. The water flow rate also changes because the greater the air discharge given, the greater the value of the water flow rate. Keywords : airlift pump, efficiency, variasi rasio debit udara, injector
Studi Simulatif Pengaruh Sudut Kemiringan Sudu, Tip Speed Ratio dan Soliditas terhadap Faktor Daya Turbin Darrieus Dengan Profil Sudu NACA0021 Abdulkadir Muhammad; Harianto; Dandung Rudy Hartana
Retii Prosiding Seminar Nasional ReTII Ke-14 2019
Publisher : Institut Teknologi Nasional Yogyakarta

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Abstract

Performance of Darrieus turbines are influenced by many fators, among them are blade profile, blade angle of inclination (α), tip speed ratio (λ), and blade solidity (σ). The objective of the research is to investigate the influences of α, λ, and σ to the power factor (Cp) of a vertical Darrieus water turbine by mean of CFD FLUENT simulation. The simulation has been conducted in a 20 cm rotor diameter, 25 cm rotor length, 3 blades, NACA0021 blade profile vertical Darrieus water turbine. Blade lenght variations are 4 cm, 5 cm and 6 cm; blade angle of inclinatian variations are 00, 50 and 100; and rotor speed variations are 60 rpm, 80 rpm, 100 rpm, 120 rpm, 150 rpm, and 200 rpm. It is concluded from the research that maximum Cp is 3.2609 % achieved at σ = 0.9, λ = 1.0467 and α = 50.
Pengaruh Penggunaan Bahan Bakar LPG Terhadap Performa Mesin Yamaha Jupiter Z 2010 Rian Ardiansyah Putra; harianto; Abdul Kadir
Retii 2022: Prosiding Seminar Nasional ReTII ke-17
Publisher : Institut Teknologi Nasional Yogyakarta

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Abstract

ABSTRAK Gas LPG termasuk dalam katagori flammable gas yang dapat digunakan sebagai bahan bakar pada peralatan pemanas dan kendaraan. Penelitian ini bertujuan untuk mengetahui pengaruh dan perbedaan peforma motor dari penggunaan bahan bakar pertalite, pertamax dan gas Lpg terhadap performa mesin Yamaha Jupiter Z 2010. Pengujian yang dilakukan adalah pengujian torsi, daya, dan kemudian menganalisa konsumsi bahan bakar spesifik (SFC). Pengujian dilakukan untuk menghitung perbandingan torsi, daya dan konsumsi bahan bakar spesifik menggunakan bahan bakar pertalite, pertamax dan Gas LPG. Hasil penelitian menunjukkan Torsi maksimum pada penggunaan bahan bakar pertalite sebesar 8,98 N.m pada putaran mesin 6108 rpm dan daya maksimum pada pertalite sebesar 8,6 HP pada putaran 7587 Rpm. Torsi maksimum dengan bahan bakar pertamax sebesar 9,16 N.m pada putaran mesin 5159 rpm dan daya maksimum pada pertamax sebesar 8,8 HP pada putaran 8040 Rpm. Sedangkan torsi maksimum dengan bahan bakar LPG Portable yaitu 9,34 N.m pada putaran 5910 rpm dan daya maksimum gas LPG sebesar 9,0 HP pada putaran 7949 Rpm. Untuk konsumsi bahan bakar spesifik menggunakan bahan bakar pertalite terendah adalah 0,0384 kg/HP-jam pada putaran 8000 rpm dan tertinggi pada 0,0832 kg/HP-jam pada putaran 4000 rpm. Pada bahan bakar pertamax terendah adalah 0,0463 kg/HP-jam pada putaran 8000 rpm dan tertinggi pada 1,0966 kg/HP-jam pada putaran 4000 rpm dan pada bahan bakar gas LPG terendah adalah 0,3331 kg/HP-jam pada putaran 8000 rpm dan tertinggi pada 0,0666 kg/HP-jam pada putaran 4000 rpm. Emisi gas buang CO maupun HC pada putaran standar 4500 Rpm sampai 5500 Rpm dari ketiga jenis bahan bakar dalam kondisi stabil. Kata kunci : Gas LPG, Torsi, Daya, Konsumsi Bahan Bakar Spesifik, Jupiter Z 2010
Kinerja Dinamis Kendaraan Toyota Avanza Tipe G Tahun 2011 Ferdioan Ardiansyach Putra; Didit Setyo Pamuji; Harianto; Abdulkadir
Retii 2022: Prosiding Seminar Nasional ReTII ke-17
Publisher : Institut Teknologi Nasional Yogyakarta

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Abstract

This study aims to analyze the dynamic performance of the 2011 Toyota Avanza Type G, which includes engine performance, maximum speed, time required to reach maximum speed, climbability and steering system performance. The analysis is based on empirical equations from the existing literature and vehicle specifications. From the analysis results obtained engine performance characteristics, the maximum speed that can be achieved is 165.6 km / h, the time required to reach a maximum speed of 24.87 seconds, able to climb at a maximum slope angle of 50.99° using 1st gear, able to turn with a turning angle (δi) to 40° without slipping.
THE EFFECT OF BIOSOLAR AND PERTAMINA DEX ON POWER PERFORMANCE, TORQUE AND DIESEL FUEL CONSUMPTION Dandung Rudy Hartana; Harianto; Wahid Anwar
KURVATEK Vol 8 No 1 (2023): Energy Management and Sustainable Environment
Publisher : Institut Teknologi Nasional Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33579/krvtk.v8i1.4030

Abstract

Initially, diesel motor fuel was only diesel, but now there are biodiesel and Pertamina Dex. In order to analyze the performance of a diesel engine, it is necessary to test it using Pertamina Dex and Biosolar. This study used an experimental method with four variations of engine speed, namely 1000 rpm, 2000 rpm, 2500 rpm, and 2500 rpm. The tool used in this research is a type 4JA1 diesel engine, the performance parameters of the diesel engine are power, torque, and specific fuel consumption. The results showed that engine performance using Pertamina Dex fuel was superior to that using biodiesel. The superiority of pertamina dex is the torque at 2500 rpm of 68.992 Nm, the power parameter has increased by 5.246%, while the specific fuel consumption of pertamina dex is 0.132% lower than biodiesel.
Simulasi Numerik Rotor Turbin Angin Sumbu Horizontal Dengan Profil Sudu NACA 4412 Irawan, Yosua Heru; Syawal Saing, Muh.; Yawara, Eka; Harianto
Retii Vol 18 No 1 (2023): Prosiding Seminar Nasional ReTII ke-18 (Edisi Penelitian)
Publisher : Institut Teknologi Nasional Yogyakarta

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Abstract

Pembangkit Listrik Tenaga Angin adalah pembangkit listrik yang menggunakan angin sebagai sumber energi untuk menghasilkan energi listrik. Energi angin dapat dimanfaatkan sebagai sumber energi alternatif dan terbarukan menggunakan turbin angin. Kinerja turbin angin tergantung pada bentuk, posisi dan dimensi turbin, dll..Penelitian ini dilakukan dengan metode simulasi numerik. Turbin angin dirancang dengan 3 sudu dengan NACA 4412. Yang dimana target dari hasil penelitian ini dapat memberikan hasil data pengolahan yang diinginkan dengan kriteria yang di harapkan Pengujian dengan kecepatan dan TSR, 5 m/s (6), 6 m/s (5), 7 m/s (4), akan di cari hasil yang menunjukkann bahwa simulasi numerik rotor turbin angin sumbu horizontal dengan profil sudu NACA 4412. Menghasilkan pengujian yang diinginkan dengan standar komputasi yang dijalankan dan ditentukan sebelumnya. Hasil dari penelitian ini mendapatkan nilai Cp mencapai 3% pada TSR 6 dan daya terbaik 126,6 watt pada TSR 5.
Co-Authors Abdul Kadir Abdulkadir Abdulkadir Muhammad Amat Agus Salim Dandung Rudy Hartana Daru Sugati Didit Setyo Pamuji Edi Susanto Eka Yawara Ferdioan Ardiansyach Putra Husni Bakhtiar Rian Ardiansyah Putra Syawal Saing, Muh. Wahid Anwar Yosua Heru Irawan