Catalogo Articoli (Spogli Riviste)
OPAC HELP
Titolo: EFFECTS OF VORTICITY ON ROCKET COMBUSTION STABILITY
Autore: FLANDRO GA;
 Indirizzi:
 UNIV TENNESSEE,INST SPACE,DEPT AEROSP & MECH ENGN TULLAHOMA TN 37388
 Titolo Testata:
 Journal of propulsion and power
fascicolo: 4,
volume: 11,
anno: 1995,
pagine: 607  625
 SICI:
 07484658(1995)11:4<607:EOVORC>2.0.ZU;2K
 Fonte:
 ISI
 Lingua:
 ENG
 Soggetto:
 SOLIDPROPELLANT ROCKET; MOTOR; FLOWS;
 Tipo documento:
 Article
 Natura:
 Periodico
 Settore Disciplinare:
 Science Citation Index Expanded
 Citazioni:
 41
 Recensione:
 Indirizzi per estratti:



 Citazione:
 G.A. Flandro, "EFFECTS OF VORTICITY ON ROCKET COMBUSTION STABILITY", Journal of propulsion and power, 11(4), 1995, pp. 607625
Abstract
Combustion stability computations are currently based on an irrotational model that allows slip flow at the burning surface. However, the noslip boundary condition must be satisfied whengas motions are parallel to the combustion zone. Then waves of vorticity are created that distort the acoustic wave structure and modify the fluctuating normal velocity component upon which system stability is so strongly dependent. This flow problem is solved here in analytical form to bring the physical details into focus. Crocco's theorem shows that the creation of vorticity is due primarily to the axial unsteady pressure gradient across mean flow streamlines at the surface. Hence, there is a transfer of energy from the pressure oscillations (acoustic field) to the rotational waves (vorticity field). It is in this interaction that the incoming flow acquires the axial motion of the acoustic wave. Stability calculations based on this model yield the threedimensional form of Culick's onedimensional flowturning correction and clarify its origin. However, continuity at the burning surface requires a correction to theradial velocity fluctuations. Incorporation of this new driving effect leads to a motor system that is significantly less stable than in the classical prediction (Standard Stability Prediction Program) for some configurations.
ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 23/09/20 alle ore 21:58:14