STUDI NUMERIK MEDAN ALIRAN PADA BODI MOBIL NOGOGENI 4

ANANG, FIRMANSYAH (2014) STUDI NUMERIK MEDAN ALIRAN PADA BODI MOBIL NOGOGENI 4. Diploma thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Perkembangan teknologi otomotif yang saat ini berkembang sangat pesat. Para produsen otomotif juga berlomba-lomba meproduksi kendaraan yang mengutamakan keselamatan pengemudi dan efifiensi mesin serta aspek aerodinamika yang terus dikembangkan. Untuk memenuhi kebutuhan tersebut mobil Nogogeni 4 adalah salah satu kendaraan yang dirancang dengan menggunakan tenaga listrik, dan bentuk bodi yang ringan serta aerodinamis. Untuk mengetahui gaya aerodinamika pada kendaraan maka dilakukan pengamatan karakteristik aliran fluida. Parameter yang dibahas dalam tugas akhir ini adalah kecepatan dan tekanan aliran fluida disekitar mobil Nogogeni 4. Pengamatan tersebut menggunakan software fluent 6.3.26. Pengujian dilakukan melalui pemodelan numerik dengan menggunakan software fluent 6.3.26 secara dua dimensi. Karakteristik aliran dinyatakan dalam grafik distribusi CP dan distribusi kecepatan disekitar bodi. Dari hasil analisa aliran yang melintasi bodi mobil Nogogeni 4 coefficient drag (CD) yang diperoleh saat simulasi pada bodi mobil Nogogeni 4 bernilai 0,0983. sedangkan coefficient lift (CL) yang diperoleh saat simulasi pada bodi mobil Nogogeni 4 bernilai 0,8629. Serta dari profil kecepatan pada daerah buritan tampak bahwa separasi pada daerah upperside bermula pada l = 2.47217 dan pada lowerside pada l = 2.27257. ===================================================================================================== Nowadays, automotive technology has developed very rapidly. Hence, automotive companies also produce to develop vehicles that give priority to the safety of the driver, engine efficiency, and aerodynamic aspect. Aerodinamic factor contributes a lot to the pace of vehicles when running, for it influences the amounts of drag on vehicles. Nogogeni 4 is one of vehicle that is specially designed to meet those needs. Nogogeni 4 is deliberately created to use electric power, along with light and aerodinamic body shape. To find out the aerodynamic forces on the vehicle then to to observations of flow characteristics around the Nogogeni 4 Car with use fluent 6.3.26. The aim of this final project is to help the electric vehicle team in determining the characteristics of fluid that flow across the body of vehicle, in this case Nogogeni 4, that include the contours of pressure, pressure coefficient (CP), drag coefficient (CD) as well as lift coefficient (CL) using 2D main display visualization through a software namely fluent 6.3.26. From the analysis of the flow that crosses the prototype car body, Nogogeni 4, drag coefficient (CD) that is obtained during the simulation in the body of Nogogeni worth 0.0983. On the other hand, the lift coefficient (CL) that is obtained during the simulation worth 0.8629. From the velocity profile at the stern area, it appears that the separation on upperside area begins at l = 2.47217 and on the lowerside begins at l = 2.27257.

Item Type: Thesis (Diploma)
Additional Information: RSM 620.106 4 Fir s
Uncontrolled Keywords: kontur tekanan, pressure coefficient (CP), drag coefficient (CD), separasi, upperside, dan lowerside
Subjects: T Technology > TJ Mechanical engineering and machinery
T Technology > TJ Mechanical engineering and machinery > TJ230 Machine design
T Technology > TL Motor vehicles. Aeronautics. Astronautics
Divisions: Faculty of Industrial Technology > Mechanical Engineering > (D3) Diploma
Depositing User: Mr. Tondo Indra Nyata
Date Deposited: 30 Jan 2017 04:43
Last Modified: 30 Jan 2017 04:43
URI: http://repository.its.ac.id/id/eprint/3926

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