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Development of piv illumination system using high power led for water tank application / Lai Hoong Chuin

Development of piv illumination system using high power led for water tank application_Lai Hoong Chuin_A2_2015_NI
Tesis ini mengkaji penggunaan diod pemancar cahaya berkusa tinggi (HPLED) sebagai sistem pencahayaan untuk partikel imej velocimetry (PIV) sebagai alternatif kepada sistem pencahayaan tradisional yang berasaskan laser. Moden HPLED boleh memberikan purata kuasa berseri yang melebihi 20W. Sistem pencahayaan dengan penggunaan 20W HPLEDs digunakan dengan litar pemacu yang khas dibina. Isyarat denyutan dari HPLED dihasilkan oleh penjana audio. Sistem pencahayaan dibangunkan digunakan untuk menyiasat tiga jenis aliran iaitu aliran tak seragam, aliran melalui kepingan logam berputar pada sudut serang yang tinggi dan aliran melalui aerofoil pada sudut serang yang tinggi. kedua-dua sistem pencahayaan, iaitu yang berasaskan laser dan HPLEDs digunakan untuk memperoleh imej dari setiap jenis aliran. Imej-imej ini kemudiannya dianalisis menggunakan PIV View, perisian komputer yang menjalankan korelasi dan keputusan dari kedua-dua sistem pencahayaan akan dibandingkan. HPLEDs menjanjikan kelebihan sedikit dari segi kos, keselamatan dan prestasi. Ia mempunyai potensi yang tinggi untuk dijadikan alternatif untuk PIV dalam masa terdekat. ______________________________________________________________________________________ This thesis investigates the use of high-power light emitting diode (HPLED) illumination system for particle image velocimetry (PIV) as an alternative to traditional laser-based illumination system. Modern solid-state HPLED can provide averaged radiant power in excess of 20W. An illumination system with the use of 20W HPLEDs are developed with the custom-built drive circuit. The pulsing of the HPLED is generated by an audio generator. The illumination system developed is used to investigate three different types of flow which are non-uniform flow, flow across a rotating plate at high angle of attack and flow across and airfoil at high angle of attack. Images of each type of flow are acquired with the used of both laser-based and HPLEDs illumination system. The images are then analyzed using PIV View, computer correlation software and the results are compared. HPLEDs promise a few advantages in terms of cost, safety and performance. It has a high potential to be develop into an alternative for PIV in the near future
Contributor(s):
Lai Hoong Chuin - Author
Primary Item Type:
Final Year Project
Language:
English
Subject Keywords:
particle image velocimetry (PIV) ; high-power light emitting diode (HPLED) ; drive circuit
First presented to the public:
6/1/2014
Original Publication Date:
9/5/2019
Previously Published By:
Universiti Sains Malaysia
Place Of Publication:
School of Aerospace Engineering
Citation:
Extents:
Number of Pages - 94
License Grantor / Date Granted:
  / ( View License )
Date Deposited
2019-09-05 16:13:25.365
Submitter:
Nor Hayati Ismail

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