EMAIL: PASSWORD:
Front Office
UPT. PERPUSTAKAAN
Institut Teknologi Sepuluh Nopember Surabaya


Kampus ITS Sukolilo - Surabaya 60111

Phone : 031-5921733 , 5923623
Fax : 031-5937774
E-mail : libits@its.ac.id
Website : http://library.its.ac.id

Support (Customer Service) :
timit_perpus@its.ac.id




Welcome..guys!

Have a problem with your access?
Please, contact our technical support below:
LIVE SUPPORT


Moh. Fandika Aqsa


Davi Wahyuni


Tondo Indra Nyata


Anis Wulandari


Ansi Aflacha




ITS » Master Theses » Sistem Manufaktur - S2
Posted by aprill@is.its.ac.id at 30/03/2015 19:38:20  •  1128 Views


STUDI EKSPERIMENTAL PENGAUH INLET DISTURBANCE BODY TERHADAP KARAKTERISRIK ALIRAN MELINTASI SILINDER SIRKULAR YANG TERSUSUN SECARA STAGGERED DALAM SALURAN SEMPIT BERPENAMPANG BUJUR SANGKAR

EXPERIMENTAL STUDY ABOUT THE INFLUENCE OF INLET DISTURBANCE BODY ON THE FLOW CHARACTERISTICS PASSING THROUGH CIRCULAR CYLINDER WITH STAGGERED ARRANGEMENT IN A NARROW CHANNELS WITH RECTANGULAR SECTION

Author :
BENYAKART, SOFIA ( 2111202705 )




ABSTRAK

Banyak cara yang telah dilakukan untuk mengurangi gaya drag antara lain adalah dengan pemberian silinder pengganggu pada bagian depan silinder sirkular utama. Tujuan penelitian ini dimaksudkan untuk menjelaskan fenomena yang terjadi. Ketika aliran melintasi susunan silinder sirkular maka akan terjadi separasi pada titik tertentu. Bila titik separasi bisa ditunda maka gaya drag yang dihasilkan akan semakin kecil. Hal tersebut dapat dilakukan dengan menggunakan bodi pengganggu di depan silinder sirkular utama yang disusun secara staggered pada saluran sempit berpenampang bujur sangkar. Dalam penelitian ini analisa dimensi digunakan untuk mengetahui variable apa saja yang mempengaruhi karakteristik aliran melintasi silinder sirkular yang tersusun secara staggered dengan bodi pengganggu pada sisi upper dan sisi lower di depan silinder utama. Bilangan Reynolds ReDh hidraulic diameter base 121 104 sampai 156 105 dan ReDh 156 105 digunakan untuk menganalisa Cp dan CD. Variasi jarak antara silinder utama dalam model ini adalah LD 1.0 1.5 2.0 2.5 3.5. Bodi pengganggu d 4 mm diletakkan didepan silinder sirkular utama yang tersusun secara staggered D 25 mm dalam saluran sempit. Posisi sudut optimum tripping rod untuk mengurangi gaya drag adalah 30o dan 60o dengan 948 0.4 mm. Parameter yang Konversi Energi dianalisa adalah pressure drop koefisien tekanan CP profil kecepatan wake di belakang bodi dan koefisien drag total CD t. Hasil penelitian menunjukkan bahwa dengan menggunakan inlet disturbance body IDB dengan silinder sirkular yang tersusun secara staggered maka pressure drop gaya drag dan koefisien drag total CDt bisa tereduksi. Reduksi paling efektif bila digunakan dengan pengganggu IDB 300.


ABSTRACT

Many ways has been done to reduce the drag forces between the other ways by adding inlet disturbance cylinder placed in front side of the main circular cylinder. The objective of this research is meant to explain the phenomenon that occurred. When the flow passing through the circular cylinders there will be separation at certain point. If the separation point can be delayed so the resulting drag force will be smaller. This can be done in various ways such as using diturbance body in front of the main circular cylinder with staggered arrangement in a narrow channel with rectangular section. In this research dimensional analysis is used to determine the variables that influence the flow characteristics passing through the circular cylinder in staggered configuration with inlet disturbance body on the upper side and lower side in front of the main circular cylinder. Reynolds number ReDh Hydraulic diameter base used in this experiment is 121 104 to 156 105 and ReDh 156 105 are used to analyze Cp and CD. Variation of distance between the main cylinder in this model are LD 1.0 1.5 2.0 2.5 3.5. as Konversi Energi well as circular inlet disturbance body with a diameter of d 4 mm was placed in front of the main circular cylinder with staggered arrangement D 25 mm in a narrow channel. The position angle of the optimum tripping rod to reduce the drag force are 30o and 60o with spacing 948 0.4 mm. The parameters analyzed are pressure drop Pressure coefficient CP the velocity profiles wake behind the cylinder and the total drag coefficient CDt. The results of this research is pressure drop pressure drag force and total drag coefficient CDt can be reduced by using circular inlet disturbance body IDB with a circular cylinders in staggered configuration. The most effective for reduction occur when used the inlet disturbance body with IDB 300.



Keywordssilinder sirkular; silinder staggered; Reynolds Number; bluff body
 
Subject:  dinamika fluida
Contributor
  1. Dr. Wawan Aries Widodo, ST., MT.
Date Create: 30/03/2015
Type: Text
Format: pdf
Language: Indonesian
Identifier: ITS-Master-21103150001397
Collection ID: 21103150001397
Call Number: RTM 620.106 4 Ben s


Source
Master Theses of Mechanical Engineering, RTM 620.106 4 Ben s, 2015

Coverage
ITS Community

Rights
Copyright @2015 by ITS Library. This publication is protected by copyright and per obtained from the ITS Library prior to any prohibited reproduction, storage in a re transmission in any form or by any means, electronic, mechanical, photocopying, reco For information regarding permission(s), write to ITS Library




[ Download - Summary ]

ITS-Master-21103150001397-36630.pdf




 Similar Document...




! ATTENTION !

To facilitate the activation process, please fill out the member application form correctly and completely

Registration activation of our members will process up to max 24 hours (confirm by email). Please wait patiently

POLLING

Bagaimana pendapat Anda tentang layanan repository kami ?

Bagus Sekali
Baik
Biasa
Jelek
Mengecewakan





You are connected from 54.221.93.187
using CCBot/2.0 (http://commoncrawl.org/faq/)



Copyright © ITS Library 2006 - 2017 - All rights reserved.
Dublin Core Metadata Initiative and OpenArchives Compatible
Developed by Hassan