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Title: Development and Performance Studies of Arc Tunnel
Researcher: Vidya Sagar
Guide(s): Chaya Ravi Kant and A.P. Mittal
University: Guru Gobind Singh Indraprastha University
Completed Date: 2015
Abstract: The thesis reports the Development and Performance studies of 50 kW arc tunnel relevant for a kW level Hydrogen Fluoride / Deuterium Fluoride (HF/DF) laser. HF/ DF is a high power chemical laser based on vibrational transition. The plasma arc discharge in an am heater/ generator is essentially employed for inducing thermal dissociation of SF6 for production of fluorine atoms. The dissociation of SF6 is a much safer alternative than other options of combustion of F2/ NF3 in an environment of H2/D2.The present work discusses the overall mechanism of an arc discharge phenomena by numerical modeling employing commercial code COMSOL and subsequent development of arc heaters for HF/DF laser applications. The variations in material properties, temperature, and velocity due to the generated arc have been studied. Comparing these results with studies available in the literature has validated the computational results. A 50 kW am heater system suitable for a kW level HF/ DF laser was designed and developed. A dedicated custom-built Data Acquisition System (DAS) has been developed and interfaced with arc-driven HF/DF laser tunnel. The DAS has been designed to work in a noisy and hostile environment for testing and performance evaluation of arc tunnel. The arc behavior has also been studied on 50 kW arc heater using Argon and Nitrogen. The development of 50 kW arc tunnel with supersonic nozzle, cavity, diffuser and vacuum dump was implemented and experimental results conducive for lasing are reported here...
Appears in Departments:University School of Engineering and Technology

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02 toc.pdf1.19 MBAdobe PDFView/Open
03 chapter 1.pdf9.6 MBAdobe PDFView/Open
04 chapter 2.pdf6.79 MBAdobe PDFView/Open
05 chapter 3.pdf7.24 MBAdobe PDFView/Open
06 chapter 4.pdf8.55 MBAdobe PDFView/Open
07 chapter 5.pdf4.1 MBAdobe PDFView/Open
08 chapter 5.1.pdf571.19 kBAdobe PDFView/Open
09 chapter 6.pdf1.23 MBAdobe PDFView/Open
10 reference.pdf2.67 MBAdobe PDFView/Open
11 publication.pdf8.55 MBAdobe PDFView/Open

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