2 edition of theoretical and experimental study of the impingement of two subsonic jets found in the catalog.
theoretical and experimental study of the impingement of two subsonic jets
An observational study has been carried out on the impingement of two cylindrical liquid jets of either the same liquid, water, or two mutually immiscible liquids, water and MCH, in either air under normal pressure ( MPa) or nitrogen gas under pressures elevated up to by: Experimental Investigation of Static Pressure Distribution on the Flat Surface Due to Impingement of Air Jets Ritesh. B. Dhamoji , Harish Kumar , Raju. B. S , Manjunatha L H PG Student, School of Mechanical Engineering, REVA University, Bangalore.  Assistant Professor, School of Mechanical Engineering, Reva University  Associate professor, school of Mechanical engineering Author: Ritesh. B. Dhamoji, Harish Kumar, Raju. B. S, Manjunatha L H.
Katti and Prabhu  had done experimental study and theoretical analysis of local heat transfer distribution between smooth flat surface and impinging air jet from a circular straight pipe nozzle. Three regions on the impingement surface are identified based on flow characteristics of impinging jet. They are stagnation region. Experimental and Numerical Study of Impingement Jet Heat Transfer by Andrew Urban Schroder Bachelor of Science, University of Cincinnati, A thesis submitted to the Faculty of the Graduate School of the University of Cincinnati in partial ful llment of the requirements for the degree of Master of Science Department of Mechanical Engineering.
Donaldson [16; 17] made a two-part experimental study of an adjustable axisymmetric jet impinging several surfaces. Jet-to-target distances varied between and jet diameters with jet angle between 30 and 75˚ and to pressure ratios employing sonic and subsonic jets. Hot wireFile Size: 1MB. Journal of Fluid Science and Technology Vol.8,No.1, distance, these modes could either coexist or the jet switch between these modes in a random fashion. The objective of the present study is to characterize the impinging-tones and edge-tones due to high speed jets issuing from square and circular nozzles and impinge on two-.
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Bibliography: p. A theoretical and experimental study of the impingement of two subsonic : Enter the password to open this PDF file: Cancel OK. File name:. Approved for public release; distribution is unlimitedA theoretical and experimental investigation has been performed on the determination of the characteristics of two impinging plane turbulent jets for the purpose of under1tanding the performance of proportional fluid amplifiers and momentum-exchange : Nihat Gungor.
THE PAPER presents the findings of a combined experimental and theoretical investigation of jet mixing phenomena in quiescent or swirling flow fields, using the hydraulic analogue technique to simulate the Diesel injection process, with particular emphasis on the development of wall by: 8.
Mean velocity and turbulence measurements were conducted on the three-dimensional fountain flow-field generated by the impingement of two axisymmetric turbulent jets on a ground plane; application. For two and three rows of aligned jet holes, the Nu x curves in the chordwise direction exhibited much different shapes due to different intensity of the interference between adjacent air jets.
This work contributes to a better understanding of the jet impingement heat transfer on a concave surface in a wing leading edge, which can lead to optimal design of the aircraft anti-icing by: Theoretical and experimental investigation of the compressible free mixing of two dissimilar gases.
Experimental and theoretical study of a stationary high-current arc in a supersonic nozzle flow. Predicted air entrainment by subsonic free round by: Extensive experimental results for heat transfer characteristics have been obtained for configurations designed to model the impingement cooled midchord region of air cooled gas turbine airfoils.
The configurations tested were in- line and staggered two-dimensional arrays of circular jets File Size: 5MB.
multiple jets may be used. The impingement cooling approach also offers a compact hardware arrangement. Some disadvantages of impingement cooling devices are: (1) For moving targets with very uneven surfaces, the jet nozzles may have to be located too far from the surface.
For jets starting at a large height above the target (over. Full text of "NASA Technical Reports Server (NTRS) Mean velocity, turbulence intensity, and scale in a subsonic turbulent jet impinging normal to a large flat plate" See other formats NASA TP c.
1 NASA Technical Paper rnry; re afv'l -i'.jica ^ KIR i LAND AFE f cr a Mean Velocity, Turbulence Intensity, and Scale in a Subsonic Turbulent Jet Impinging Normal to a Large Flat. electronics cooling. This study covers physics of jet impingement heat transfer, available correlations and results from experiments.
CONCEPT OF JET IMPINGEMENT HEAT TRANSFER Single phase and two phase jet impingement cooling have been topics of interest for many decades. Impinging jets can be either air powered or can use form of liquid. Experimental study of jet impingement heat transfer on a variable-curvature concave surface in a wing leading edge  firstly performed an experimental study on a single row of circular jets impinging on a concave cylindrical surface.
The results indicated that the optimal H/d value was 3~5 when Re ranged from to File Size: KB. In addition they also offer, for the first time, an explanation as to why no stable impingement tones have been observed for (cold) subsonic jets with Mach number less than Furthermore, the new model allows the prediction of the average Strouhal number of impingement tones as a function of jet Mach by: In this paper, we model the impingement process for a supersonic two-dimensional impinging jet, using the piece- wise parabolic method, with the aim of understanding the mechanisms involved in the feedback process.
NUMERICAL METHOD The two-dimensional Euler equations for compressible hydrodynamics are written in conservation by: 8. Experimental Study of Underexpanded Supersonic Jet Impingement on an Inclined Flat Plate. Part II: Numerical study on the flow and thermal characteristics of an integrated deflector under the periodic impingement of a supersonic high temperature by: The mist jet was created using a coaxial jet atomizer, with a liquid jet of diameter μm located on the axis of an annular air jet of diameter 2 mm.
The impingement surface was a square of side mm. Experimental data were obtained with mists of both methanol and by: Experimental study of physical mechanisms in the control of supersonic impinging jets using microjets - Volume - FARRUKH S.
ALVI, Cited by: This paper considers two of the classical forms of supersonic jet resonance: screech in shock-containing free jets and tones generated by the impingement of a jet against a surface.
on the impingement of under expanded plates and wedges. Shadowgraph pictures and pressure measurements were used for the flow field analysis. Iwamoto7 reported experimental study of under-expanded dry air sonic jets impinging on a flat plate. The flow field was visualized using shadow photography and Mach-zehnder interferometry.
underexpanded jets has been conducted at NASA Langley Research Center. The study has examined the effect of an impingement target placed at various distances and angles on transitional behavior of such jets.
Two nozzles, with exit Mach numbers of andwere used in this investigation. Planar laser-induced fluorescence of nitric oxide (NO. Basic properties Such as length and velocity scales, decay of the mean velocity, rate of spread and entrainment of some unsteady, subsonic, turbulent jets are examined.
Effects of cyclic excitation are dependent on the frequency and level of by: Experimental study of near-field air entrainment by subsonic volcanic jets Stephen A.
Solovitz1 and Larry G. Mastin2 Received 9 January ; revised 22 June ; accepted 7 July ; published 7 October  The flow structure in the developing region of a turbulent jet has been examined usingCited by: Results of an experimental study of submerged subsonic air jets exiting from axially symmetric and plane channels in the Reynolds number range of – are presented.
Data on visualizing the flow picture and zone of the laminar-turbulent transition have been obtained. The measurement results are compared with well-known experimental data for gas macro- and by: