Comprehensive Numerical Study of Jet-Flow Impingement over Flat Plates

Wu, Junxiao; Tang, Lin; Luke, Edward A.; Tong, Xiaoling; Cinnella, Pasquale

doi:10.2514/2.3834

Cited by 27 publications

(11 citation statements)

References 9 publications

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“…From the pressure measurement on the plate surface and shadowgraph visualization it has become clear that the plate inclination has a strong influence on the pressure distribution. Kim and Chang 6 , and Wu 7,8 , et al simulated numerically the experimental study of Lamout and Hunt by solving Euler and Navier Stokes equations respectively and obtained qualitative agreement with experimental results. These numerical studies could provide explanations of the complex shock interactions.…”

Section: Introductionmentioning

confidence: 50%

Numerical Simulation of Supersonic Jet Impingement on Inclined Plate

Dharavath

Chakraborty

2013

DSJ

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Supersonic jet impinging on an inclined plate is explored numerically by solving Reynolds Averaged Navier Stokes (RANS) equations using a commercial solver. The numerical uncertainty is quantified by grid convergence index parameter analysis. Simulations capture crisply all the essential features of the flow field including jet boundary, jet shock, upper tail shock, front and behind plate shocks. Good agreement between computational and experimental results for different plate angles forms the basis of further analysis. Four different two equations turbulence models predict similar jet structures. Effect of plate angles, pressure ratio, nozzle-plate distance on impinged jet structures are evaluated from numerical results. It has been observed that with increase in the plate angle, the maximum pressure zone in the plate changed from crescent shape to round shape. Well resolved RANS simulations are capable of capturing finer details of supersonic impinging jets on inclined plate.

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Section: Introductionmentioning

confidence: 50%

Numerical Simulation of Supersonic Jet Impingement on Inclined Plate

Dharavath

Chakraborty

2013

DSJ

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“…10, " NP Z " states the nozzle-to-plate distance which is measured from the nozzle exit to the plate along the jet axis, and " DN " is the diameter of the nozzle exit. In the experiments of Lamount and Hunt 33 , the jet is produced by compressed air supporting to the chamber of a convergent-divergent type nozzle, therefore, the jet gas can be assumed to be a "cold air" (" 1.4 The experiments of Lamount and Hunt 33 have already been well numerically reproduced by several authors with CFD codes solving standard Navier-Stokes equations (single-species-gas) [34][35][36][37] . In principle, the jet should be produced by a solid motor for the validation work, but the authors have no available test data for the plume impingement of a solid motor at the moment.…”

Section: B Modeling Plume Impingementmentioning

confidence: 99%

Coupled Simulation of CFD and Flight Mechanics with a Two-Species-Gas-Model for the Hot Staging of a Multistage Rocket

Reimann

Eggers

2014

19th AIAA International Space Planes and Hypersonic Systems and Technologies Conference

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The hot staging dynamics of a multistage rocket is studied using the coupled simulation of Computational Fluid Dynamics (CFD) and Flight Mechanics (FM). In the coupled simulations, the free-stream is modeled as "cold air" and the exhausted plume from the continuing-stage-motor is modeled with an equivalent calorically-perfect-gas that approximates the properties of the plume at the nozzle exit. The Navier-Stokes equations in the coupled simulations are time-accurately solved in moving system, with which the Flight Mechanics equations can be fully coupled. The Chimera mesh technique is utilized to deal with the relative motions of the separated stages. A few representative staging cases with different initial flight conditions of the rocket are studied with the coupled simulation. Based on the simulation results, the staging dynamics of the rocket are finally analyzed. Nomenclature CFD = computational fluid dynamics DN = diameter of nozzle dt = time step size FM = flight mechanics P 1 = chamber pressure of the motor, Pa R = gas constant, J/K mol  Sep = separation distance, m t = time, s 3D = three dimensional I I I I O x y z  = inertial coordinate system = translational velocities in the staging coordinate system, m/s NP Z = nozzle-to-plate distance, m  = the ratio of specific heats 1 PhD Student, Department Spacecraft, Lilienthalplatz 7, 38108 Braunschweig, Germany, AIAA student member.

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“…In this section, details of the formulation of a robust Navier-Stokes solver [3] for meshes with general elements are described briefly. A temporally and spatially second-order accurate method is developed using a finite-volume approach formulated for general elements.…”

Section: Flow Solvermentioning

confidence: 99%

“…In this paper, we describe two mesh generation strategies that utilize general elements [7,13] as well as how a specific flow solver [3] is structured to handle general elements. We present results for two configurations to demonstrate the effectiveness of our approach and make recommendations for future work.…”

Section: Introductionmentioning

confidence: 99%

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On the use of general elements in fluid dynamics simulations

Chalasani

Senguttuvan

Thompson

et al. 2007

Commun. Numer. Meth. Engng.

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SUMMARYAs flow solvers have become more sophisticated, many now have the capability to handle meshes with general polyhedral elements, i.e. general elements. In response, researchers have begun to develop mesh generation strategies that exploit nonstandard element types. General elements have been employed locally in near-body extruded meshes to improve mesh quality and have also been used in solution adaptive mesh refinement algorithms. In this paper, we present two mesh generation strategies that employ general elements. We also discuss how a specific flow solver is formulated to work with general elements. We demonstrate our approach by presenting simulation results for two realistic configurations. We close with a discussion that highlights future research directions.

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Comprehensive Numerical Study of Jet-Flow Impingement over Flat Plates

Cited by 27 publications

References 9 publications

Numerical Simulation of Supersonic Jet Impingement on Inclined Plate

Numerical Simulation of Supersonic Jet Impingement on Inclined Plate

Coupled Simulation of CFD and Flight Mechanics with a Two-Species-Gas-Model for the Hot Staging of a Multistage Rocket

On the use of general elements in fluid dynamics simulations

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