Abo Bibliothek: Guest
International Journal of Energetic Materials and Chemical Propulsion

Erscheint 6 Ausgaben pro Jahr

ISSN Druckformat: 2150-766X

ISSN Online: 2150-7678

The Impact Factor measures the average number of citations received in a particular year by papers published in the journal during the two preceding years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) IF: 0.7 To calculate the five year Impact Factor, citations are counted in 2017 to the previous five years and divided by the source items published in the previous five years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) 5-Year IF: 0.7 The Immediacy Index is the average number of times an article is cited in the year it is published. The journal Immediacy Index indicates how quickly articles in a journal are cited. Immediacy Index: 0.1 The Eigenfactor score, developed by Jevin West and Carl Bergstrom at the University of Washington, is a rating of the total importance of a scientific journal. Journals are rated according to the number of incoming citations, with citations from highly ranked journals weighted to make a larger contribution to the eigenfactor than those from poorly ranked journals. Eigenfactor: 0.00016 The Journal Citation Indicator (JCI) is a single measurement of the field-normalized citation impact of journals in the Web of Science Core Collection across disciplines. The key words here are that the metric is normalized and cross-disciplinary. JCI: 0.18 SJR: 0.313 SNIP: 0.6 CiteScore™:: 1.6 H-Index: 16

Indexed in

REFORMING AND PYROLYSIS OF LIQUID HYDROCARBONS AND PARTIALLY OXIDIZED FUELS FOR HYPERSONIC PROPULSION

Volumen 5, Ausgabe 1-6, 2002, pp. 546-562
DOI: 10.1615/IntJEnergeticMaterialsChemProp.v5.i1-6.580
Get accessGet access

ABSTRAKT

Chemical reforming and pyrolysis of liquid hydrocarbons (LHCs) and partially oxidized fuels (POFs) on board of hypersonic vehicles are analized as alternative to carrying liquid hydrogen fuel. The purpose is to check wether carrying and reforming (or pyrolyzing) high density LHC/POF would be more advantageous than carrying LH2 in terms of (gaseous) hydrogen yield, cooling due to the endothermic nature of both processes, and potential fuel tank volume reduction. Moreover, an analysis of performance and fuel consumption is made for an AJAX-type vehicle.
The hydrocarbons used to simulate reforming are methane and n-dodecane (as the simplest surrogates of NG and kerosene). Some partially oxidized fuels have been used to simulate cracking and reforming. Their use is particularly interesting because soot formation and heavy dehydrogenated species may be drastically reduced.
The software package used to simulate reforming and pyrolysis of LHCs is a non-commercial code called D.S.M.O.K.E. This software has been validated comparing its results with those obtained with the NASA C.E.C.-86 program.
Other simulations have been performed involving three POFs (Methanol, Methyl GlycoL Ethyline Glycol) as real fuels (not ignition improvers) using the CEA400 code and CHEMKIN. A broad range of initial conditions has been investigated by varying initial pressure, temperature, mixture composition and also residence times in the reformer. The stagnation temperatures, reached in correspondence of the wing leading edge or nose of the aircraft at high Mach numbers, have been used as initial reforming/pyrorysis temperatures. This may be considered as a limiting case, obtained considering the Prandtl number of the air Pr = 1 (recovery factor r = √Pr = 1) and assuming that heat transfer between the external surface and the reformer internal wall is realized without losses. Constant enthalpy and pressure kinetics has have been simulated in order to predict the temperature drop due to the endothermic nature of the processes.

Digitales Portal Digitale Bibliothek eBooks Zeitschriften Referenzen und Berichte Forschungssammlungen Preise und Aborichtlinien Begell House Kontakt Language English 中文 Русский Português German French Spain