Frequency response of a vaporization process to distorted acoustic disturbances

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100 1 ‡aHeidmann, Marcus F.
245 1 0 ‡aFrequency response of a vaporization process to distorted acoustic disturbances ‡cby Marcus F. Heidmann.
260 ‡aWashington, D.C. : ‡bNational Aeronautics and Space Administration ; ‡a[Springfield, Va. : ‡bFor sale by the National Technical Information Service], ‡c1972.
300 ‡a32 p. : ‡bill. ; ‡c27 cm.
490 0 ‡aNASA technical note ; ‡vNASA TN D-6806
500 ‡aPrepared at Lewis Research Center.
500 ‡aCover title.
504 ‡aBibliography: p. 32.
520 ‡aThe open-loop response properties expressed as the mass vaporized in phase and out of phase with the pressure oscillations were numerically evaluated for a vaporizing n-heptane droplet. The evaluation includes the frequency dependence introduced by periodic oscillation in droplet mass and temperature. A given response was achieved over a much broader range of frequency with harmonically distorted disturbances than with sinusoidal disturbances. The results infer that distortion increases the probability of incurring spontaneous and triggered instability in any rocket engine combustor by broadening the frequency range over which the vaporization process can support an instability.
538 ‡aMode of access: Internet.
650 0 ‡aFrequency response (Dynamics)
650 0 ‡aRocket engines ‡xCombustion.
710 1 ‡aUnited States. ‡bNational Aeronautics and Space Administration.
710 2 ‡aLewis Research Center.
CID ‡a011445271
DAT 0 ‡a20101111075311.0 ‡b20141009010000.0
DAT 1 ‡a20141112165512.0 ‡b2024-01-26T18:54:57Z
CAT ‡aSDR-UIUC ‡dUNKNOWN ‡lloader.pl-003-020
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