A survey of methods for exhaust-nozzle flow                                                   analysis

Brown, Evelyn C.; Hamilton, G. L.

doi:10.2514/6.1975-60

Cited by 7 publications

(3 citation statements)

References 16 publications

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“…(1) and (2) can be reduced to the nondimensional equation -(</> x +F) (</> r ) (2<t> xr +F r ) + (c 2 /r) (<t> r ) =0 (5) where By differentiating Eq. (3) with respect to r and Eq.…”

Section: Governing Equationsmentioning

confidence: 99%

A Relaxation Solution of Transonic Nozzle Flows Including Rotational Flow Effects

Brown

Brechtt²,

Walsh

1977

Journal of Aircraft

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A computational procedure is described for rotational transonic flows. The effects of rotationality were introduced by a rotation function, and the resulting "potential-like" equation was solved by type-dependent relaxation. The method has been used to predict the flowfield in propulsion-type nozzles using both arbitrarily specified and experimentally measured entrance conditions. In these runs, good agreement with analysis and available experimental results was obtained, and a significant influence due to the rotationality of the flow was observed.

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“…(1) and (2) can be reduced to the nondimensional equation -(</> x +F) (</> r ) (2<t> xr +F r ) + (c 2 /r) (<t> r ) =0 (5) where By differentiating Eq. (3) with respect to r and Eq.…”

Section: Governing Equationsmentioning

confidence: 99%

A Relaxation Solution of Transonic Nozzle Flows Including Rotational Flow Effects

Brown

Brechtt²,

Walsh

1977

Journal of Aircraft

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“…As discussed by Brown and HamiltJr [15] and Klopfer and Holt [29], another objection to these methods is the potentially poorly posed nature of the problem resulting from the specification of the velocity along the centerline in the subsonic region. When the governing equations are solved numerically, this specification is known to have a destabilizing effect on the computations (Hadamard instability).…”

Section: Imentioning

confidence: 99%

“…In a later publication [75], an example was calculated for the flow in a two-dimensional nozzle with a hyperbolic wall contour. Interestingly, when this method was programmed on a digital computer convergence problems were encountered [15]. Twenty-five years I.…”

Section: I-mentioning

confidence: 99%

A Theoretical and Experimental Investigation of Transonic Flow in the Throat Region of Annular Axisymmetric, Supersonic Nozzles.

Dutton¹,

Addy²

1980

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Transonic Flow Annular Nozzle Supersonic NozzleAn integrated theoretical and experimental investigation of flow in the throat region of unconventional, annular, supersonic nozzles was conducted. The theoretical analysis consists of the formulation and development of an approximate series expansion solution to the inviscid, irrotational governing equations. The resulting solution provides a direct means of analyzing the throat flowfields in a variety of two-dimensional nozzle configurations includ- Flowfield static pressure measurements were obtained for four nozzle configurations including an axisymmetric, Laval nozzle and three annular ones. Half-section cylindrical models were constructed and mounted on a splitter plate whose surface corresponds to a plane of symmetry for the axisymmetric geometries under consideration. Readings from a grid of pressure taps arranged on the splitter plate allowed the determination of the static pressure fields in the nozzle throats. For all four cases tested, it was found that the agreement between the theoretical and experimental results is quite good through a significant region of the throat. Only near the bounding walls in the throat inlet region was there a noticeable discrepancy for some of the cases.

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Numerical investigation of the flow in axisymmetric Laval nozzles, including conditions of ove rexp ans ion with flow breakaway

Tagirov¹

1978

Fluid Dyn

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A survey of methods for exhaust-nozzle flow analysis

Cited by 7 publications

References 16 publications

A Relaxation Solution of Transonic Nozzle Flows Including Rotational Flow Effects

A Relaxation Solution of Transonic Nozzle Flows Including Rotational Flow Effects

A Theoretical and Experimental Investigation of Transonic Flow in the Throat Region of Annular Axisymmetric, Supersonic Nozzles.

Numerical investigation of the flow in axisymmetric Laval nozzles, including conditions of ove rexp ans ion with flow breakaway

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