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Wyszukujesz frazę "Oppenheim, A." wg kryterium: Wszystkie pola


Wyświetlanie 1-4 z 4
Tytuł:
Memorandum of prof. A. K. Oppenheim and an example of application of the Oppenheim correlation (OPC)* for the heat losses during the combustion in IC-engine
Autorzy:
Jankowski, A.
Czerwinski, J.
Powiązania:
https://bibliotekanauki.pl/articles/246928.pdf
Data publikacji:
2010
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
combustion engines
Oppenheim Correlation OCP
heat transfer
heat looses
Vibe-Function
Opis:
The Oppenheim Correlation (OPC) is an empirical algorithm, which allows a simple estimate of heat losses to the wall during the combustion in IC-engine. In present paper the results ofdifferent applications of OPC will be shown. Even if there are still several needs and ideas for further research it can be stated, that the OPC is a promising possibility of modelling the wali heat losses and due to its simplicity it has to be recommended to the engine community. The OPC can be used not only for didactics purposes, but also for quick simulation of wall heat losses and eventuałły for the on-line regulation of the cooling system. In particular basic milestones of calculation of the working cycle, modelling of heat losses according to Oppenheim (OPC), engines and test procedure, examples of the OPC-application are presented in the paper. The OPC can be recommended to the engine community as a good alternative of modelling and calculation of the heat losses trough the combustion chamber wall.
Źródło:
Journal of KONES; 2010, 17, 2; 181-194
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The contribution of A.K. Oppenheim to explaning the nature of the initiation of gaseous detonation in tubes
Autorzy:
Kuhl, Allen L.
Hayashi, Antoni Koichi
Wolański, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/36455676.pdf
Data publikacji:
2022
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Lotnictwa
Tematy:
boundary layer
ignition detonation initiation
combustion
explosion in the explosion
detonation
deflagration-detonation transition
DDT
Opis:
This paper analyzes A.K. Oppenheim’s original works on the transition of deflagration to detonation and reviews them from the perspective of new numerical and experimental results recently obtained on such phenomena. Particular attention is focused on processes happening in the boundary layer of the tube walls ahead of the accelerating flame. The results of the theoretical analyses of temperature variations inside developing boundary layer are presented and compared to the temperature variation in a free stream away from the boundary layer. Analyses of temperature increase in such layers clearly indicate that the self-ignition of the mixture happens in the boundary layer ahead of the propagating flame front. New experimental results obtained recently by a research group from the A. V. Luikov Heat and Mass Transfer Institute in Minsk, Belarus, combined with previously conducted theoretical analyses and numerical simulations, show clearly and unambiguously that the origin of the “explosion in the explosion”, postulated by A. K. Oppenheim in 1966, is always responsible for the Deflagration-Detonation Transition (DDT) in gases and is located in the boundary layer ahead of the accelerating flame front.
Źródło:
Transactions on Aerospace Research; 2022, 2 (267); 1-12
0509-6669
2545-2835
Pojawia się w:
Transactions on Aerospace Research
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-4 z 4

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