Impinging of axisymmetric developing jets

Author: aixe

August undefined, 2024

Witryna1. 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. 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 …

(PDF) Design, development, and validation of concepts for …

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 … 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... great supreme health premium

(PDF) Erosion by turbulent jets - ResearchGate

WitrynaImpinging Jet Flow 5.1 Introduction The axisymmetric impinging jet ﬂow is geometrically simple. Figure 5.1 shows a schematic of the particular arrangement … Witryna1 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... Witryna12 kwi 2024 · Niimi et al. 8 examined the three dimensional axisymmetric oblique flow on a plane wall around the stagnation point and observed that the wall stress only depends upon the distance from the ... florian fouquet

Compressibility Effects on the Growth and Development of Large …

Vortex dynamics in a normally impinging planar jet SpringerLink

Witryna1 paź 2005 · Abstract and Figures An experimental study of fully developed confined impinging axisymmetric water vapor jet is completed with turbulent 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. great support walking shoesWitryna21 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 … florian franke wein

"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. … " - Impinging of axisymmetric developing jets

Impinging of axisymmetric developing jets

(PDF) Erosion by turbulent jets - ResearchGate

WitrynaAn analytical research was conducted to study heat transfer from horizontal surfaces to normally impinging circular jets under arbitrary-heat-flux conditions. The laminar … Witryna5 lip 2000 · Surface pressure distributions and streamline plots are calculated for various impinging jet configurations, including plane, round, and annular jet nozzles. …

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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

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 … 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) …

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

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 …

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. florian fournerieWitryna1 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... florian foundation willWitrynaAn impinging cooling system comprises a jet of high-velocity fluid striking a hot target surface. The fluid jet picks up thermal energy from the hot surface, thus enhancing heat transfer from it. During this process, thermal energy is transported from the hot surface to the fluid via forced convection, raising the fluid temperature in the ... florian fox youtubeWitrynaAbstract: 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. great surgery bookWitryna1 lut 2024 · Other recent studies of industrial relevance are combustion chambers, 3,4 swirl atomizers 28 or heat transfer by confined impinging jets. 8, 9 Rotating pipes … florian frank wtwWitryna1 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 … great surge protectorsWitryna15 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 … florian fournier