Investigation of a dual inlet side dump combustor using liquid fuel injection

Stull, F. D.; Craig, R. R.; Streby, G. D.; Vanka, Surya Pratap

doi:10.2514/3.22763

Cited by 43 publications

(16 citation statements)

References 2 publications

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“…The light scattered from the seeding particles was collected by a receiving optical package, which consisted of a 250-mm focal-length lens, a convex lens, a concave lens, and a 45-deg mirror to reflect the collected light into a photomultiplier. The detected signal was electrically downmixed to the appropriate frequency shift (2)(3)(4)(5)(6)(7)(8)(9)(10) MHz in this experiment). Then a counter processor with 2-ns resolution was used to process the Doppler signal.…”

Section: Experimental Systemmentioning

confidence: 99%

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Flowfield in a dual-inlet side-dump combustor

Liou

1988

Journal of Propulsion and Power

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The cold flowfield of a side-dump combustor, which consisted of a plexiglass, circular duct with two 60-deg curved inlets located radially at an angle of 180 deg, is measured quantitatively using laser-Doppler velocimetry. Air was used as a flow medium. The Reynolds number, based on the combustor diameter and bulk velocity, was 2.6 x 10 4 . Detailed profiles of mean velocities and turbulence intensities are reported. The impinging stagnation point of the inlet jets, the lengths needed to reach both one-way flow and fully developed mean-velocity profile, and the primary combustor flow regions are determined. In addition, the homogeneity and isotropy of the turbulence are documented. Furthermore, the results also identify the part of fluid dynamic characteristics unable to be predicted by two-dimensional models. This information will be useful to test and develop combustor modeling in this area.Nomenclature combustor diameter, mm dome height, mm combustor radial coordinate, mm normalized combustor radial coordinate, =2R C /D C combustor Reynolds number, =pU Tef D c /iJL combustor bulk velocity, m/s radial mean velocity, m/s radial turbulence intensity, m/s axial mean velocity, m/s axial turbulence intensity, m/s = tangential mean velocity, m/s = tangential turbulence intensity, m/s = combustor longitudinal coordinate, mm = normalized combustor longitudinal coordinate definitions: X* C >0:X* C =X C /D C ; --inlet-duct axial coordinate, deg = combustor tangential coordinate, deg = air dynamic viscosity, kg/m-s = air density, kg/m 3

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Section: Experimental Systemmentioning

confidence: 99%

“…The results were presented in terms of mean flow velocity only. Stull et al 7 and Vanka et al 8 investigated analytically the flowfield characteristics of a three-dimensional side-inlet dump combustor by varying the position of the dome plate and the angle of the side inlets. There was no report on turbulence either.…”

Section: Introductionmentioning

confidence: 99%

Flowfield in a dual-inlet side-dump combustor

Liou

1988

Journal of Propulsion and Power

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“…A few experimental studies [1][2][3] are reported in literature to understand the reacting and non reacting flow fields of side dump combustors. These experimental studies show flow features which are specific to the model geometry considered and no general scaling law exists to extend the observations from these experiments to the combustors with altered geometries.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulations of Static Tested Ramjet Dump Combustor

Javed

Chakraborty

2016

J. Inst. Eng. India Ser. C

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The flow field of a Liquid Fuel Ram Jet engine side dump combustor with kerosene fuel is numerically simulated using commercial CFD code CFX-11. Reynolds Averaged 3-D Navier-Stokes equations are solved alongwith SST turbulence model. Single step infinitely fast reaction is assumed for kerosene combustion. The combustion efficiency is evaluated in terms of the unburnt kerosene vapour leaving the combustor. The comparison of measured pressures with computed values show that the computation underpredicts (*5 %) pressures for non reacting cases but overpredicts (9-7 %) for reacting cases.

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“…Because flame stabilization in a side-dump combustor heavily depends on the inlet flows, a number of studies have centered on elucidating the flow filed [3,4]. Particularly, many experimental and analytical efforts have centered on determining an optimal dome height for the best blow-off performance [3,[5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Approximate velocity scale for primary and secondary dual-inlet side-dump flows

Jung

Park

et al. 2009

J Mech Sci Technol

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Effects of the bulk inlet velocity on the characteristics of dual-inlet side-dump flows are numerically investigated. Non-reacting subsonic turbulent flow is solved by a preconditioned Reynolds-averaged Navier-Stokes equation system with low-Reynolds number k ε − turbulence model. The numerical method is properly validated with measured velocity distributions in the head dome and the combustor. With substantial increase in the bulk inlet velocity, general profiles of essential primary and secondary flows normalized by the bulk inlet velocity are quantitatively invariant to the changes in the bulk inlet velocity.

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Investigation of a dual inlet side dump combustor using liquid fuel injection

Cited by 43 publications

References 2 publications

Flowfield in a dual-inlet side-dump combustor

Flowfield in a dual-inlet side-dump combustor

Numerical Simulations of Static Tested Ramjet Dump Combustor

Approximate velocity scale for primary and secondary dual-inlet side-dump flows

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