Experimental and numerical methods for radiative wall heat flux predictions in paraffin–based hybrid rocket engines
| Autor: | Brian J. Cantwell, Giuseppe Leccese, Francesco Nasuti, Keith Javier Stober, Daniele Bianchi, Pavan Narsai |
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| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Materials science
business.product_category Aerospace Engineering Thrust 02 engineering and technology 01 natural sciences 0203 mechanical engineering 0103 physical sciences Heat exchanger Radiative transfer 010303 astronomy & astrophysics discrete transfer method computation 020301 aerospace & aeronautics paraffin–based fuel business.industry Numerical analysis radiative heat transfer Mechanics hybrid rocket engine spectroscopic measurement Heat flux Rocket Thermal radiation Rocket engine business |
| Popis: | The paper is intended to present both experimental and numerical approaches for estimating the heat exchange through thermal radiation towards the walls of lab–scale paraffin–based thrust chambers. Two firing tests of a lab–scale gaseous–oxygen/paraffin–wax hybrid rocket engine have been performed to apply such methods. In particular, the radiative wall heat flux has been evaluated by both spectroscopic measurements and discrete transfer method computations. Details of such approaches are given together with results achieved. The significant gap between experimental and numerical estimations suggested further investigations of influencing processes, whose main outcomes and lessons learned are critically discussed. |
| Databáze: | OpenAIRE |
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