Article Per Year (5 Year)
p-Index From 2019 - 2024
0.23
P-Index
This Author published in this journals
All Journal Ensiklopedia of Journal METAL : Jurnal Sistem Mekanik dan Termal
Rina Rina
Universitas Dharma Andalas
Arts Humanities Automotive Engineering Computer Science & IT Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Social Sciences

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
Reduksi Gaya Drag Silinder Sirkular dengan Penambahan Square Disturbance Body Melalui Simulasi Numerik 2D Unsteady-RANS pada Reynolds Number 34800 Rina Rina; Ruzita Sumiati; Adriansyah Adriansyah
METAL: Jurnal Sistem Mekanik dan Termal Vol 2, No 2 (2018)
Publisher : Department of Mechanical Engineering, Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1506.472 KB) | DOI: 10.25077/metal.2.2.43-49.2018

Abstract

Circular cylinder has a strong  adverse pressure gradient. When a fluid flows around the circular cylinder, it will produce aerodynamics force. One of them is  the drag force which strong enough. Hence, control of flow need to reduce the drag force with placed a disturbance body on the upstream side. The purpose of this study is to compare and complement the experimental research of drag reduction that has been done before. The aerodynamics characteristics of the disturbance body and cylinder are modelled in two dimensions Unsteady-RANS by using fluent with turbulent flow. It is found that the mean drag and the lift fluctuation of the cylinder can be reduced by the upstream disturbance body with the s/D = 0.107 (here s and D are side length of the disturbance body and the diameter of cylinder, respectively). The position of the disturbance body is varied at (α) 20º, 30º, 40º, 50º and 60º with a gap distance (δ = 0.4mm). Reynolds number based on cylinder diameter ReD = 3.48x104. Fluid interaction between circular cylinder with two disturbance body can increase boundary layer transition from laminer to turbulent to produce small drag. It is found that the characteristics of the flow significantly depend on the position of disturbance body. The optimum condition for the drag force reduction is at the angle α = 30º  about  53 %.
PERFORMANCE ENGINE 1108 CC MENGGUNAKAN BAHAN BAKAR RON 88 DAN RON 92 Nofriyandi.R Nofriyandi.R; Rina Rina; Haznam Putra
Ensiklopedia of Journal Vol 1, No 2 (2019): Vol 1 No 2 Edisi 1 Januari 2019
Publisher : Lembaga Penelitian dan Penerbitan Hasil Penelitian Ensiklopedia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (669.696 KB) | DOI: 10.33559/eoj.v1i2.34

Abstract

This experimental study aims to compare the performance and Spesific Fuel Consumsion (Sfc) where were produced from RON 88 fuel and RON 92 fuel with T101D Automotive engine test bed, with optionals tool. Engine gasoline type 1.1 8V was used in this study. The difference of torque which is caused by the use of RON 88 and RON 92 fuel is obtained. The highest torque at occurred 2500 rpm where the comparison between these two is about 4.458 %. Then, the performance of RON 88 has slight difference. The Spesific Fuel Consumption (sfc) of RON 92 fuel is lower than RON 88 fuel sfc. The lowest decrease (sfc) is 21.212% at 3700 rpm and the overall engine decline is 7.796%.
Co-Authors Adriansyah Adriansyah Haznam Putra Nofriyandi.R Nofriyandi.R Ruzita Sumiati