Mankbadi, R. R., Hayder, M. E. and Povinelli, L. A. "The Structure of Supersonic Jet Flow and Its Radiated Sound". AIAA Journal, vol. 32, no. 5, pp 897-906, 1994.  Home/Search   Document Not in Database   Summary   Related Articles   Check

....the jet. It corresponds to a localized source of mass injection at the location (x s , y j ) where y j is the location of the jet axis and x s is approximately 1D downstream from the nozzle exit. An alternative approach, involving time harmonic excitation of the jet is described by Mankbadi et al.[21] The second forcing term is designed so that in the absence of the starter pulse the solution to the Euler equations would be a stationary profile corresponding to a spreading jet. Mean profiles for U , V , ae and T are employed and are described in more detail elsewhere. 3] The inclusion of this ....

Mankbadi, R., Hayder, M. and Povinelli, L., "The Structure of Supersonic Jet Flow and Its Radiated Sound," AIAA Journal, Vol. 32, 1994, pp. 897-906.

.... noise [7, 16, 22, 34] Analytical studies provided further elucidation of the role of instabilities as an important source of jet noise [5, 13, 14, 26, 27, 30] as did the computations [2, 21, 22] More recent computations have included the effect of viscosity and turbulence models, for example, [25]. These computations demonstrated the substantial difficulties in simulating sound generation from spreading jets directly from the Navier Stokes equations. In the approach taken here, the jet profile is modeled and included as a source term in the Euler equations. The resulting model allows the ....

Mankbadi, R., Hayder, M., and Povinelli, L., "The Structure of Supersonic Jet Flow and Its Radiated Sound," AIAA Paper 93-0549, 1993.

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Mankbadi, R. R., Hayder, M. E. and Povinelli, L. A. "The Structure of Supersonic Jet Flow and Its Radiated Sound". AIAA Journal, vol. 32, no. 5, pp 897-906, 1994.

....of all the characteristic variables from the interior. This framework of outflow boundary condition implementation is discussed by Hayder and Turkel [10] Further discussions of our numerical model including other boundary treatments are given in Hayder et al. 11] and Mankbadi et al. [12]. In this study, we consider a jet with the mean inflow profile U r = U1 (U c Gamma U1 )g r T r = T c (T 1 Gamma T c )g r fl Gamma 1 2 M 2 c (1 Gamma g r )g r g r = 1 2 [1 tanh( 1 r Gamma r 4 ) where is the momentum thickness. The subscripts c and 1 refer to the ....

Mankbadi, R. R., Hayder, M. E. and Povinelli, L. A. "The Structure of Supersonic Jet Flow and Its Radiated Sound". AIAA Journal, vol. 32, no. 5, pp 897-906, 1994.

.... B aeu aeu 2 p aeuv aeuH 1 C C C A ; G = r 0 B B B aev aeuv aev 2 p aevH 1 C C C A : 4 We use the fourth order MacCormack method which has been successfully used in earlier studies by Hayder et al. 1996) to solve the linearized Euler equations, and by Hayder et al. 1993) and Mankbadi et al. 1994) to solve the Navier Stokes equations. The equations are linearized before splitting to obtain the equations for the absorbing layer. Thus, we get (Q 1 Gamma Q 1 0 ) t (F Gamma F 0 ) z = Gammaoe z (Q 1 Gamma Q 1 0 ) Q 2 Gamma Q 2 0 ) t (G Gamma G 0 ) r = Gammaoe r (Q 2 ....

Mankbadi, R. R., Hayder, M. E. and Povinelli, L. A., "The Structure of Supersonic Jet Flow and Its Radiated Sound" AIAA Journal, 32: 897-906, 1994.

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Mankbadi, R., Hayder, M. and Povinelli, L., "The Structure of Supersonic Jet Flow and Its Radiated Sound," AIAA Journal, Vol. 32, 1994, pp. 897-906.

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