2006
DOI: 10.2514/1.20348
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Abstract: The concept of the cell size of multifront gaseous detonation proposed about 40 years ago is used widely to estimate other detonation parameters: the critical initiation energy and critical diameters. In this paper the review of all known models for calculation of the cell size as the main detonation parameter is presented. Models were analyzed on their physical basis and basic assumptions. All models were checked also on their correctness to estimate the cell size for different mixtures. The calculated values… Show more

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Cited by 52 publications
(18 citation statements)
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“…It should be clearly understood, however, that estimate (2) does not reflect the real number of detonation cells that can be formed along the TDW front. Indeed, first, p c0 ≈ 0.3p c ahead of the TDW front, i.e., the transverse size of the cell has to increase by more than a factor of 3, as compared with its size at p = p c ; second, the cell size at D/D C−J = 0.8 ± 0.05, which are the values obtained in our experiments, has to increase by a factor of 4 to 5, as compared with its value at D = D C−J [13]. Thus, no more than one cell can be located along the TDW front in reality in the case of continuous spin detonation.…”
Section: Analysis Of Resultsmentioning
confidence: 95%
“…It should be clearly understood, however, that estimate (2) does not reflect the real number of detonation cells that can be formed along the TDW front. Indeed, first, p c0 ≈ 0.3p c ahead of the TDW front, i.e., the transverse size of the cell has to increase by more than a factor of 3, as compared with its size at p = p c ; second, the cell size at D/D C−J = 0.8 ± 0.05, which are the values obtained in our experiments, has to increase by a factor of 4 to 5, as compared with its value at D = D C−J [13]. Thus, no more than one cell can be located along the TDW front in reality in the case of continuous spin detonation.…”
Section: Analysis Of Resultsmentioning
confidence: 95%
“…This picture was observed despite the higher chemical activity of the acetylene-air mixture than the hydrogenair mixture (in a stoichiometric mixture under standard conditions, the detonation-cell size in the first mixture is 1.5 times smaller than the detonation-cell size in the second mixture [12]). This experimentally observed fact shows that one of the governing factors is the quality of mixing, which was better in the hydrogen-air mixture because of the greater difference in hydrogen and air velocities.…”
Section: Analysis Of Experimental Resultsmentioning
confidence: 80%
“…The last and last-but-one rows show the data for the cases where the additive 3.76O 2 is considered as a reacting and an inert substance, respectively, which noticeably affects the values of a and E 3 . Figure 3 shows the experimental data (points) [5][6][7][8][9][13][14][15] and calculated data on the cell size a and the critical diameter d * * as functions of the mole fraction of the diluent. All notations in the top left corner refer to nitrogen, and those in the bottom right corner refer to oxygen.…”
Section: Dilution Of Non-stoichiometric Mixtures Basic Resultsmentioning
confidence: 99%