Impinging of axisymmetric developing jets

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August undefined, 2024

WitrynaAbstract. 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 … 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 …

Irreversibility of the Direct and Counter Impinging Liquid Jet onto ...

Witryna1 mar 2014 · The optimal impinging jet system was based on four design variables: the spacing between the impinging jets and effusion holes (1.0 ≤ Sp ≤ 5.0), the channel height from impinging jet to effusion surface (1.0 ≤ Ht ≤ 3.0), the mass flux ratio of the crossflow to the impinging jet flow (0.1 ≤ G∗ ≤ 1.3, −1.3 ≤ G∗ ≤ −0.1), and the main … WitrynaTurbulence energetics in an axisymmetric impinging jet flow. Physics of Fluids 2024, 31 (5) , ... The effect of inflow conditions on the development of non-swirling versus … my physical activity pyramid

Experimental investigation of an axisymmetric, impinging …

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 … 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 … 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... my physical education teacher chinese drama

Characterization of the Impingement Region in an Axisymmetric …

Wall Jet Similarity of Impinging Planar Underexpanded Jets - arXiv

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 mar 2024 · Screech was first described by Powell in a series of papers on both planar and axisymmetric jets in the 1950s. 10, 11 Powell’s findings, based on experimental observation, can be summarized as follows: 1. Imperfectly expanded jets produce a discrete tone whose wavelength relates to the shock spacing (and thus degree of … my physical examWitryna29 cze 2001 · Permissions The differences in mixing performance between axisymmetric turbulent jets issuing from three common types of nozzle, viz. a … my physical characteristics

"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. " - Impinging of axisymmetric developing jets

Impinging of axisymmetric developing jets

Compressibility Effects on the Growth and Development of Large …

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 … 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) …

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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 …

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... 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...

WitrynaPhysical Modelling of Axisymmetric Turbulent Impinging Jets as used within the Nuclear Industry for Mobilisation of Sludges D. McKendrick 1, S. R ... similar to the d10 jet development, but by D/d of 15 the peak horizontal velocity is already decreasing and the jet height increasing. 10 20 30 40 50-40 -20 0 20 40 60 80 100 120 140 160 ... Witryna22 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 …

WitrynaDesign, development, and validation of concepts for generating passive pulsation in cooling nozzles

http://s177835660.websitehome.co.uk/research/THESIS/imp_jet.pdf the sea cucumber\\u0027s survival storyWitryna15 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 structure. my physical exercise英语作文Witryna1 maj 1991 · The smoke-wire flow visualization technique was used to gain a deeper physical insight into a regular vortex structure of free and impinging round subsonic jets. The jet issued into ambient air at rest through a bell-shaped nozzle. the sea deli kingston nyWitrynaImpinging Jet Flow 5.1 Introduction The axisymmetric impinging jet ﬂow is geometrically simple. Figure 5.1 shows a schematic of the particular arrangement … my physical conditionWitrynathe impinging jet scenario. The wall jet resulting from axisymmetric impinging jets has been studied experimentally [15, 16]; the studies show that the wall jet developed downstream of impingement does demonstrate self-similar behavior. We present a parametric study that characterizes the velocity profile and wall shear stress of the my physical activity week planWitrynaBoth the impinging jets and the fountains caused by the collision of the wall jets are modeled in the simulation. The problem considered contains the essential features of … the sea croft lytham st annesWitryna5 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 … my physical exercise作文