Impinging of axisymmetric developing jets

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August undefined, 2024

Witryna25 sty 2010 · This paper presents the results of an experimental study of the erosion of a cohesionless bed by obliquely impinging circular turbulent jets. The jet of air, with velocity of 27.3 to 86.8 m/s... Witryna1 lip 1974 · An experimental study of an axisymmetric turbulent jet impinging on a semi-cylindrical concave surface is carried out using Particle Image Velocimetry …

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WitrynaThe current work experimentally investigates the flowfield characteristics of an under-expanded turbulent jet impinging on a solid surface for various nozzle-to-plate distances 2.46 D j , 1.64 D j , and 0.82 D j ( D j is the jet hydraulic diameter), and nozzle pressure ratios (NPRs) ranging from 2 to 2.77 . Planar particle image velocimetry (PIV) … WitrynaAn experimental and numerical study of impinging, incompressible, axisymmetric, laminar jets is described, where the jet axis of symmetry is aligned normal to the wall. Particle streak velocimetry (PSV) is used to measure axial velocities along the centerline of the flow field. queen elizabeth 1 last words

Impinging Circular Turbulent Jets (1974) Spyridon Beltaos 165 …

Witryna5 lut 2024 · Supersonic impinging jet flows always occur when aircrafts start short takeoff and vertical landing from the ground. Supersonic flows with residues produced by chemical reaction of fuel mixture have the potential of reducing aircraft performance and landing ground. The adverse flow conditions such as impinging force, high noise … Witryna2 lip 2024 · A regular vertical pattern of an axisymmetric jet was observed with different flow entrainment rate. While an impinged jet turns to convert a wall jet along a … Witryna20 kwi 2006 · Detailed measurements of the velocity profiles in a laminar axisymmetric submerged jet of water were taken using a laser-Doppler anemometer. A non-intrusive measurement technique is particularly advantageous in this application owing to the unstable nature of the laminar jet and the destabilizing effect which objects … queen elizabeth 1 how long did she reign

Jet Impingement Heat Transfer: Stationary Disc - ResearchGate

The inviscid impingement of a jet with arbitrary velocity profile

Witryna4 lip 2014 · A numerical investigation to determine the thermal characteristics of an unsubmerged axisymmetric oil jet impinging in a confined space on a stationary disc with uniform heat flux has been undertaken. Witryna19 cze 2024 · The inlet of the mainstream chamber was expanded by 16D in order to ensure full development of the boundary layer of the mainstream. ... R. Effect of jet-jet spacing on convective heat transfer to confined, impinging arrays of axisymmetric air jets. Int. J. Heat Mass Transf. 1994, 37, 2859–2869. queen elizabeth 1 hairWitryna25 sty 2010 · The impingement of turbulent jets on solid boundaries has been studied extensively in the past. It has been established that flow parameters in the … shippensburg ems 73

"WitrynaAn analytical research was conducted to study heat transfer from horizontal surfaces to normally impinging circular jets under arbitrary-heat-flux conditions. The laminar … " - Impinging of axisymmetric developing jets

Impinging of axisymmetric developing jets

Axisymmetric wall jet development in confined jet impingement

Witryna15 lut 2024 · This paper describes the results of methodical investigations of the effect of the Pitot tube on measurements of gas-dynamic parameters of supersonic axisymmetric underexpanded real and model microjets. Particular attention is paid to distortions of Pitot pressure variations on the jet axis associated with the wave structure of the jet and to … Witryna29 cze 2001 · Permissions The differences in mixing performance between axisymmetric turbulent jets issuing from three common types of nozzle, viz. a …

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Witryna15 lut 2024 · The flow field surrounding an axisymmetric, confined, impinging jet was investigated with a focus on the early development of the triple-layered wall jet … Witryna1 kwi 1998 · The purpose of the present study is three-fold: to experimentally investigate the characteristics which are unique to confined and submerged impinging jets; to contrast these with the flow fields for free-surface and submerged but unconfined jets; and to interpret the respective heat transfer characteristics in light of the differences in …

WitrynaA temporally resolved flow visualization system that produces 17 flow images over a time span of 128 microseconds is used to visualize the mixing layers of a Mach 1.28 (M c =0.59) and a Mach 2.06 (M c =0.87) ideally expanded high Reynolds number axisymmetric jets. These image sequences revealed details about the effects of … Witryna21 wrz 2024 · Impingement of axisymmetric developing jets. Journal of Hydraulic Research, 15: 311–326. Article Google Scholar Chen Q (1995). Comparison of different k-ε models for indoor air flow computations. Numerical Heat Transfer, Part B: Fundamentals, 28: 353–369. Article Google Scholar Chen HJ, Moshfegh B, Cehlin M …

WitrynaSingle axi-symmetric round jet flow was analyzed using computational techniques and validated with experimental results to establish the suitable turbulence model for … WitrynaSingle axi-symmetric round jet flow was analyzed using computational techniques and validated with experimental results to establish the suitable turbulence model for simulation of low Reynolds...

Witryna1 paź 2005 · Abstract and Figures An experimental study of fully developed confined impinging axisymmetric water vapor jet is completed with turbulent characteristics …

Witrynaan axisymmetric impacting jet We turn to the case of the impinging jet. In the impingement region, it can be argued that the inertia terms in the equations of motion … shippensburg elementaryWitryna20 kwi 2006 · In a high-speed subsonic jet impinging on a flat plate, the surface pressure fluctuations have a broad spectrum due to the turbulent nature of the high-Reynolds … queen elizabeth 1 imagesWitrynaIn the authors words, the overall goal is make the complex simple, without losing the essence--the virtue--of the complexity.Modeling Axisymmetric Flows: Dynamics of Films, Jets, and Drops is the first book to cover the topics of axisymmetric laminar flows; free-boundary flows; and dynamics of drops, jets, and films. shippensburg estatesWitryna19 kwi 2006 · This paper reports on an extensive experimental study of the flows due to under-expanded axisymmetric jets impinging on flat plates. The range of plate … queen elizabeth 1 half sisterWitrynaAbstract. Mean and fluctuating velocities and shear stresses in an air jet impinging on a flat surface have been obtained by particle image velocimetry. A recirculation zone is … queen elizabeth 1 rumorsWitrynaAn analytical research was conducted to study heat transfer from horizontal surfaces to normally impinging circular jets under arbitrary-heat-flux conditions. The laminar thermal and hydraulic boundary layers were divided into five regions of flow. General expressions of heat transfer coefficients were obtained in all the four regions of stagnation and … shippensburg estates llcWitryna5 lip 2000 · Surface pressure distributions and streamline plots are calculated for various impinging jet configurations, including plane, round, and annular jet nozzles. … queen elizabeth 1 ship