Impinging of axisymmetric developing jets

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August undefined, 2024

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 … Witryna10 sie 1999 · This paper describes the results of a study examining the flow and acoustic characteristics of an axisymmetric supersonic jet issuing from a sonic and a Mach 1.5 converging–diverging (C–D) nozzle and impinging on a ground plane. Emphasis is placed on the Mach 1.5 nozzle with the sonic nozzle used mainly for comparison.

An experimental investigation of laminar axisymmetric submerged jets …

WitrynaAn 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 … shaniece bernal

Visualization of a free and impinging round jet - ScienceDirect

WitrynaAn analytical research was conducted to study heat transfer from horizontal surfaces to normally impinging circular jets under arbitrary-heat-flux conditions. The laminar … WitrynaImpinging jets are widely used as cooling systems in applications such as gas turbines and metal quenching. The electronics industry employs jets of cold air impinging on … Witryna1 cze 2015 · These jets are vital for efficient dredging and are used to fluidise the soil. This reduces forces on the cutting teeth and makes the sand-water mixture more suitable for upward transport through... shaniece cole

Numerical Analysis of Supersonic Impinging Jet Flows of Particle …

Physical Modelling of Axisymmetric Turbulent Impinging Jets as …

WitrynaAbstract: Turbulence statistics in the stagnation region of an axisymmetric jet impinging vertically on a flat plate are reported. The measurements were made in a submerged water jet facility at a Reynolds number of approximately 13,000 based on the nozzle exit velocity and the nozzle diameter. WitrynaLiquid impinging jet at the bottom of the annular cavity is a typical case in the process industry. The jet could have an impact at the bottom center or its peripheral section. The profiled annular cylindrical cavity with the installed electricity heater source is investigated in this paper. Thermal contact irreversibility and liquid drag irreversibility are … shaniece clarkWitrynaAbstract. 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 … shanie cahill

"Witryna19 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 … " - Impinging of axisymmetric developing jets

Impinging of axisymmetric developing jets

A study of the flow field of a confined and submerged impinging jet ...

WitrynaA much higher decay rate of -1.5 was found for the wall jet formed by a laminar impinging jet at Re = 1000. AB - The flow field surrounding an axisymmetric, confined, impinging jet was investigated with a focus on the early development of the triple-layeredwall jet structure. WitrynaDesign, development, and validation of concepts for generating passive pulsation in cooling nozzles

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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 … 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) …

Witryna25 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 … Witryna20 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 …

Witryna27 mar 2003 · Impulsively started impinging jets were experimentally investigated in a water tank utilizing a fluorescent dye technique. The jets were examined prior to and subsequent to impingement. The impingement surfaces included a flat surface and a two-dimensional semicircular concave surface. 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.

Witryna5 lip 2000 · Surface pressure distributions and streamline plots are calculated for various impinging jet configurations, including plane, round, and annular jet nozzles. …

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 … shaniece criss furmanWitrynaof the under-expanded impinging jet can be reproduced by the unsteady 2D axisymmetric simulation. In addition, a possible cause of the feedback mechanism of … shaniece cooperWitryna1. Introduction In cutting or chipping processes a robust liquid cooling system is crucial for maintaining the cutting tools and workpieces in the temperature limits. The current type of cooling is an impinging jet cooling, which is a very effective cooling technique with high rates of local heat transfer. shanie bradley attorneyWitryna1 mar 2014 · Duarte et al. (2014) did a similar analysis for experimental test results carried out with a 0.072-m diameter nozzle, for plunging water jets issued 1 m above the pool bottom, and a pool depth of... shaniece crystal instagramhttp://s177835660.websitehome.co.uk/research/THESIS/imp_jet.pdf poly languages instituteWitryna22 wrz 2024 · In this paper, unsteady and time-averaged turbulence characteristics in a submerged cavitating jet with a high Reynolds number are studied using large eddy simulation. The simulation is validated by comparing the vapor distribution using CFD and a high-speed photography experiment. The results indicate that the currently used … poly languages institute at irvineWitryna1 paź 2005 · Abstract and Figures An experimental study of fully developed confined impinging axisymmetric water vapor jet is completed with turbulent characteristics … shaniece criss