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ITS » Undergraduate Theses » Teknik Fisika S1
Posted by fandikaaqsa@its.ac.id at 08/04/2016 14:13:07  •  762 Views


SIMULASI MEKANISME PASSIVE-PITCH DENGAN FLAPPING WING PADA TURBIN VERTIKAL AKSIS ARUS SUNGAI JENIS DARRIEUS STRAIGHT-BLADED BERBASIS CFD

SIMULATION OF PASSIVE PITCH MECHANISM USING FLAPPING WING ON DARRIEUS STRAIGHT-BLADED VERTICAL AXIS RIVER TURBINE BASED ON CFD

Author :
SUSILO ( 2410100053 )




ABSTRAK

Telah dilakukan simulasi mekanisme passive pitch berbasis CFD pada turbin vertikal aksis arus sungai tipe Darrieus straight-bladed menggunakan mekanisme flapping wing. Simulasi mekanisme flapping wing dilakukan dengan cara memutar turbin satu putaran azimuth 0 sampai 360 dengan variasi sudut pitch 10 dan 20. Berdasarkan hasil simulasi menggunakan CFD diperoleh pola perubahan nilai Fx Fy dan resultan gaya antara Fx dan Fy beserta arah resultan gaya yang dihasilkan oleh turbin. Selain itu diperoleh juga pola perubahan nilai torsi pada sumbu x dan y serta resultan torsi beserta arah resultan torsi yang dihasilkan oleh turbin. Pada simulasi mekanisme passive pitch dengan menggunakan flapping wing diperolah nilai gaya dan torsi yang terbesar diperolah ketika turbin berada di azimuth 100 nilai gaya yang terbesar adalah 37.36 N dengan sudut tangensial sebesar -6.33 kuadran IV sedangkan nilai torsi yang terbesar adalah 14.46 Nm dengan sudut tangensial sebesar 83.67 kuadran I. Berdasarkan hasil simulasi CFD nilai gaya dan torsi yang dihasilkan oleh turbin dipengaruhi oleh distribusi tekanan yang mengenai turbin pada satu putaran turbin ketika nilai gaya dan torsi yang dihasilkan oleh turbin tinggi maka distribusi tekanan yang diterima oleh turbin hampir merata pada ketiga foil turbin pada azimuth 100 nilai tekanan yang diterima oleh turbin sebesar 228.4 Pa. Fenomena berupa pola perubahan nilai gaya torsi serta pengaruh distribusi tekanan yang tidak diperoleh ketika eksperimen dapat diperoleh dengan menggunakan software CFD.


ABSTRACT

The passive pitch mechanism on Darrieus straight-bladd vertical axis river turbine with flapping wing mechanism has been simulated on CFD. The flapping wing mechanism simulation is carried out by rotate the turbin from azimuth 0 to 360 with pitch angle variation 10 and 20. The CFD simulation result shows that the value change pattern of Fx Fy force resultant between Fx and Fy and force resultant direction which generated by the turbine. On the other hand the value change pattern of torque on x and y axis torque resultant and torque resultant direction has been obtained too. From the simulation the maximum value of force and torque obtained were 37.36 N with tangential angle of -6.33 quadrant IV and 14.46 Nm with tangential angle of 83.67 quadrant I respectively for azimuth value of 100. Based on CFD simulation result the value of force and torque which generated by turbine is affected by the pressure distribution on the turbine. When the high value of force and torque is received the pressure distribution on the turbine almost evenly on the third turbine foil at azimuth 100 the value of pressure were received by the turbine of 228.4 Pa. The value change pattern phenomena of force torque and the influence of pressure distribution were not retrieved in experiments method can be obtained with simulation using CFD software.



KeywordsFlapping wing; Simulasi CFD; Distribusi tekanan; Gaya; Torsi
 
Subject:  Teknik fisika
Contributor
  1. Dr. Ridho Hantoro, S.T., M.T.
  2. Nur Laila Hamidah, S.T., M.Sc.
Date Create: 08/04/2016
Type: Text
Format: PDF
Language: Indonesian
Identifier: ITS-Undergraduate-24101160008618
Collection ID: 24101160008618
Call Number: RSF 621.406 Sus s


Source
Undergraduate Thesis of Phisics Engineering, RSF 621.406 Sus s, 2014

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Copyright @2016 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




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  1.  ITS-Undergraduate-41026-2410100053-abstract_id.pdf - 231 KB
  2.  ITS-Undergraduate-41026-2410100053-abstract_en.pdf - 222 KB




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