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HIGH TEMPERATURE MEASUREMENTS AT THE INTERNAL NOZZLE WALL OF THE ZEPHYR
2014 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

In this thesis the heat transfer theory is studied and applied to develop a theoretical model which can be used to estimate exhaust gas temperature of ZEpHyR main engine developed at ZARM institute. The conjugate gradient method with adjoint problem for function estimation iterative technique is used to solve the Inverse Heat Conduction Problem (IHCP) to estimate heat flux and internal wall temperature of throat section of the nozzle. The convective heat transfer coefficient is calculated using Bartz equation. The exhaust gas temperature is determined using estimated heat flux, internal wall temperature and heat transfer coefficient. The model is verified by comparing the estimated flux with the results from a published research. The nozzle is made of Molybdenum material and the exhaust gas temperature is determined to check material’s capability to withstand high gas temperature.

Place, publisher, year, edition, pages
2014.
Keyword [en]
Technology, Inverse heat conduction problem, IHCP, Conjugate gradient method
Keyword [sv]
Teknik
Identifiers
URN: urn:nbn:se:ltu:diva-44992Local ID: 2bcbef45-9035-4c19-b78b-392baa4590ebOAI: oai:DiVA.org:ltu-44992DiVA: diva2:1018271
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Subject / course
Student thesis, at least 30 credits
Educational program
Space Engineering, master's level
Supervisors
Examiners
Note
Validerat; 20141101 (global_studentproject_submitter)Available from: 2016-10-04 Created: 2016-10-04Bibliographically approved

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CiteExportLink to record
Permanent link

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Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf