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008 150903s2009 ne | o |||| 0|eng d
020 _a9789048122516
_99789048122516
024 7 _a10.1007/9789048122516
_2doi
035 _avtls000364998
039 9 _a201509030708
_bVLOAD
_c201405070405
_dVLOAD
_y201402211241
_zstaff
040 _aMX-SnUAN
_bspa
_cMX-SnUAN
_erda
050 4 _aQC120-168.85
100 1 _aPyatnitsky, L. N.
_eautor
_9350793
245 1 0 _aTurbulence Nature and the Inverse Problem /
_cby L. N. Pyatnitsky.
264 1 _aDordrecht :
_bSpringer Netherlands,
_c2009.
300 _brecurso en línea.
336 _atexto
_btxt
_2rdacontent
337 _acomputadora
_bc
_2rdamedia
338 _arecurso en línea
_bcr
_2rdacarrier
347 _aarchivo de texto
_bPDF
_2rda
490 0 _aFluid Mechanics and its Applications,
_x0926-5112 ;
_v89
500 _aSpringer eBooks
505 0 _aThe turbulence problem -- Fluid motion -- Distribution of parameters in viscous flow -- Perturbations in viscous flow -- Perturbation in channels -- Spatio-temporal field of perturbations in channels -- Evolution of velocity oscillation field -- Experimental substantiation of turbulence wave model -- Transition from normal combustion to detonation -- An inverse problem of turbulence.
520 _aHydrodynamic equations well describe averaged parameters of turbulent steady flows, at least in pipes where boundary conditions can be estimated. The equations might outline the parameters fluctuations as well, if entry conditions at current boundaries were known. This raises, in addition, the more comprehensive problem of the primary perturbation nature, noted by H.A. Lorentz, which still remains unsolved. Generally, any flow steadiness should be supported by pressure waves emitted by some external source, e.g. a piston or a receiver. The wave plane front in channels quickly takes convex configuration owing to Rayleigh's law of diffraction divergence. The Schlieren technique and pressure wave registration were employed to investigate the wave interaction with boundary layer, while reflecting from the channel wall. The reflection induces boundary-layer local separation and following pressure rapid increase within the perturbation zone. It propagates as an acoustic wave packet of spherical shape, bearing oscillations of hydrodynamic parameters. Superposition of such packets forms a spatio-temporal field of oscillations fading as 1/r. This implies a mechanism of the turbulence. Vorticity existing in the boundary layer does not penetrate in itself into potential main stream. But the wave leaving the boundary layer carries away some part of fluid along with frozen-in vorticity. The vorticity eddies form another field of oscillations fading as 1/r2. This implies a second mechanism of turbulence. Thereupon the oscillation spatio-temporal field and its randomization development are easy computed. Also, normal burning transition into detonation is explained, and the turbulence inverse problem is set and solved as applied to plasma channels created by laser Besselian beams.
590 _aPara consulta fuera de la UANL se requiere clave de acceso remoto.
710 2 _aSpringerLink (Servicio en línea)
_9299170
776 0 8 _iEdición impresa:
_z9789048122509
856 4 0 _uhttp://remoto.dgb.uanl.mx/login?url=http://dx.doi.org/10.1007/978-90-481-2251-6
_zConectar a Springer E-Books (Para consulta externa se requiere previa autentificación en Biblioteca Digital UANL)
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999 _c310184
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