Relevant bibliographies by topics / Radial Wall Jet Impingement

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Academic literature on the topic 'Radial Wall Jet Impingement'

Author: Grafiati
Published: 4 June 2021
Last updated: 3 February 2022

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Journal articles on the topic "Radial Wall Jet Impingement"

1

Özdemir, İ. Bedii, and J. H. Whitelaw. "Impingement of an unsteady two-phase jet on unheated and heated flat plates." Journal of Fluid Mechanics 252 (July 1993): 499–523. http://dx.doi.org/10.1017/s0022112093003854.

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This paper is concerned with an experimental investigation of the oblique impingement of an unsteady, axisymmetric two-phase jet on heated surfaces. Size and velocity were measured simultaneously with a phase-Doppler velocimeter, and the spatial distributions over the wall jet were found to be correlated with the interfacial activities as inferred from vertical velocity measurements in the vicinity of the wall. These results are discussed together with size measurements by a laser-diffraction technique to quantify the effect of the approach conditions of the inflowing jet droplet field and wal
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2

Balachandar, R., and M. F. Tachie. "CHARACTERISTICS OF A DEVELOPING DROPLET - LADEN JET IMPINGING ON A NORMAL WALL." Transactions of the Canadian Society for Mechanical Engineering 22, no. 4A (1998): 325–39. http://dx.doi.org/10.1139/tcsme-1998-0018.

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The size-velocity characteristics of a droplet-laden air jet impinging on a normal wall is investigated using a phase-Doppler anemometer. The results of measurements conducted for two jet-exit-to-impingement-wall distances are presented. Experimental data are obtained across the jet at several axial stations covering the first ten jet-exit diameters. The radial variation of droplet mean velocity, rms velocity and skewness coefficient indicates that similarity is not achieved. The rate of spreading of the jet is higher than that noticed in both single-phase flow and previous two-phase flow stud
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3

Taslim, M. E., L. Setayeshgar, and S. D. Spring. "An Experimental Evaluation of Advanced Leading Edge Impingement Cooling Concepts." Journal of Turbomachinery 123, no. 1 (2000): 147–53. http://dx.doi.org/10.1115/1.1331537.

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The main objective of this experimental investigation was to measure the convective heat transfer coefficient of impingement for different target wall roughness geometries of an airfoil leading edge, for jet to wall spacings and exit flow schemes. Available data in the open literature apply mostly to impingement on flat or curved smooth surfaces. This investigation covered two relatively new features in blade leading-edge cooling concepts: curved and roughened target surfaces. Experimental results are presented for four test sections representing the leading-edge cooling cavity with cross-over
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Goldstein, R. J., K. A. Sobolik, and W. S. Seol. "Effect of Entrainment on the Heat Transfer to a Heated Circular Air Jet Impinging on a Flat Surface." Journal of Heat Transfer 112, no. 3 (1990): 608–11. http://dx.doi.org/10.1115/1.2910430.

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An experimental investigation is described that characterizes the convective heat transfer of a heated circular air jet impinging on a flat surface. The radial distributions of the recovery factor, the effectiveness, and the local heat transfer coefficient are presented. The recovery factor and the effectiveness depend on the spacing from jet exit to the impingement plate, but do not depend on jet Reynolds number. The effectiveness does not depend on the temperature difference between the jet and the ambient. A correlation is obtained for the effectiveness. The heat transfer coefficient is ind
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Kaewbumrung, Mongkol, and Chalermpol Plengsa-ard. "Relaminarization of a hot air impingement on a flat plate." E3S Web of Conferences 128 (2019): 10004. http://dx.doi.org/10.1051/e3sconf/201912810004.

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The research mainly focuses on a numerical analysis for heat transfer in the transition flow regimes. The simulation is presented by using ANSYS-FLUENT and Reynolds Averaged Navier Stokes (RANS) technique is employed in order to simulate the complex flow fields. The turbulent jet which impinges on the flat plate with a constant surface heat fluxes is tested. The average Nusselt number predictions are also calculate and compared with existing measurement results. The jet Reynolds number is set to 23,000 which based on jet nozzle diameter, while a jet-toplate spacing of H/D is fixed at 2.0. The
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Hsieh, S. S., J. T. Huang, and C. F. Liu. "Local Heat Transfer in a Rotating Square Channel With Jet Impingement." Journal of Heat Transfer 121, no. 4 (1999): 811–18. http://dx.doi.org/10.1115/1.2826070.

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The influence of rotation and jet mass flow rate on the local heat transfer coefficient for a single confined impinging round jet with a fixed jet-to-wall spacing of H/d = 5 was studied for the jet Reynolds number from 6500 to 26,000 and the rotational Reynolds number from 0 to 112,000. The local heat transfer coefficient along the surface is measured and the effect of the rotation on the stagnation (peak) point, local and average Nusselt number, is presented and discussed. Furthermore, a correlation was developed for the average Nusselt number in terms of the parameters of Rej and ReΩ. In gen
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Dhondoo, Nilesh, Ştefan-Mugur Simionescu, and Corneliu Bălan. "Impinging jets array: an experimental investigation and numerical modeling." E3S Web of Conferences 85 (2019): 05004. http://dx.doi.org/10.1051/e3sconf/20198505004.

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This paper reports on the measurements of wall shear stress and static pressure along a smooth static wall upon which jet impingement occurs. The effect of a single circular jet, respectively an array of jets is studied using a high speed/resolution camera. The areas of interest are the stagnation region and the wall jet region, where the jet is deflected from axial to radial direction. The effect of increasing the distance between the inlets is also investigated. The results are obtained by performing direct flow experimental visualizations and CFD numerical simulations, using the Reynolds av
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Ichimiya, Koichi, and Yoshio Yamada. "Three-Dimensional Heat Transfer of a Confined Circular Impinging Jet With Buoyancy Effects." Journal of Heat Transfer 125, no. 2 (2003): 250–56. http://dx.doi.org/10.1115/1.1527901.

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This paper describes the heat transfer and flow characteristics of a single circular laminar impinging jet including buoyancy force in a comparatively narrow space with a confined wall. Temperature distribution and velocity vectors in the space were obtained numerically by solving three-dimensional governing equations for the Reynolds number Re=umD/ν=400-2000 and the dimensionless space, H=h/D=0.25-1.0. After impingement, heat transfer behavior on the impingement surface is divided into a forced convection region, a mixed convection region, and a natural convection region in the radial directi
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Li, Yongping, Qizhao Lin, and Zuojin Zhu. "LES of Normally Impinging Elliptic Air-Jet Heat Transfer at Re=4400." Advances in Applied Mathematics and Mechanics 9, no. 2 (2017): 485–500. http://dx.doi.org/10.4208/aamm.2015.m1078.

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AbstractJet impingement induced heat transfer is an important issue in engineering science. This paper presents results of large eddy simulation (LES) of normally impinging elliptic air-jet heat transfer at a Reynolds number of 4400, with orifice-to-plate distance fixed to be 5 in the unit of jet nozzle effective diameter. The elliptic aspect ratio (a/b) is 3/2. While the target wall is heated under some condition of constant heat flux. The LES are carried out using dynamic subgrid model and Open-FOAM. The distributions ofmean velocity components, velocity fluctuations, and subgrid stresses in
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Krishnan, Gopi, and Kamran Mohseni. "An experimental study of a radial wall jet formed by the normal impingement of a round synthetic jet." European Journal of Mechanics - B/Fluids 29, no. 4 (2010): 269–77. http://dx.doi.org/10.1016/j.euromechflu.2010.03.001.

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Dissertations / Theses on the topic "Radial Wall Jet Impingement"

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Edrei, Maximiliano. "CFD Evaluation of Mixing Processes for High-Level Nuclear Waste Tanks." FIU Digital Commons, 2017. https://digitalcommons.fiu.edu/etd/3528.

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Computational Fluid Dynamics (CFD) has been applied to investigate two aspects of a mixing process for high level nuclear waste tanks. Through CFD the applicability of Poreh’s correlations that are currently used to describe the radial wall jets in the Pulse Jet Mixing (PJM) process were assessed. In addition, simulations were conducted in order to investigate mean hydrodynamic characteristics of sparged non-Newtonian fluids for the use in the PJM process. Three single phase turbulent simulations using the commercial package STAR-CCM+ were successively conducted. A model validated with experim
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Ball, Stephen. "Near wall flow characteristics in jet impingement heat transfer." Thesis, Nottingham Trent University, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.388866.

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Huang, Yao-Wei, and 黃耀緯. "THE EFFECTS OF OSCILLATORY EQUIVALENCE RATIO AND STRETCH ON LEAN PREMIXED COMBUSTION INSTABILITY IN SINGLE JET-WALL IMPINGEMENT." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/42489919593500094321.

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博士<br>國立成功大學<br>航空太空工程學系碩博士班<br>92<br>The Effects of Oscillatory Equivalence Ratio and Stretch on Lean Premixed Combustion Instability in Single Jet-Wall Impingement Student: Yao-Wei Huang Advisor: Yei-Chin Chao ABSTRACT In this work, the research of the dynamic response to the oscillatory equivalence ratio and strain rate near lean flammable limit is studied in the jet-wall impingement by experiments, numerical simulations and theoretical analysis. In the jet-wall impingement, the oscillatory strain rate can be induced by two manners. The first method is to make the domain between t
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Books on the topic "Radial Wall Jet Impingement"

1

Cooper, Leonard Y. Ceiling jet properties and wall heat transfer in compartment fires near regions of ceiling jet-wall impingement. U.S. Dept. of Commerce, National Bureau of Standards, National Engineering Laboratory, Center for Fire Research, 1986.

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Book chapters on the topic "Radial Wall Jet Impingement"

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Knowles, K., and M. Myszko. "The Turbulent, Radial Wall Jet: Effect of Impinging Jet Conditions." In Fluid Mechanics and Its Applications. Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-011-0457-9_49.

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Natarajan, Thangam, James W. Jewkes, Ramesh Narayanaswamy, Yongmann M. Chung, and Anthony D. Lucey. "Near-Wall Anisotropy Under Round and Planar Jet Impingement." In Fluid-Structure-Sound Interactions and Control. Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-662-48868-3_41.

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3

Wassenberg, J., P. Stephan, and T. Gambaryan-Roisman. "Heat Transfer During Pulsating Liquid Jet Impingement onto a Vertical Wall." In Advances in Heat Transfer and Thermal Engineering. Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-33-4765-6_47.

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Wright, Edward, Abdallah Ahmed, Yuying Yan, John Maltson, and Lynda Arisso Lopez. "Experimental and Numerical Heat Transfer Investigation of Impingement Jet Nozzle Position in Concave Double-Wall Cooling Structures." In Advances in Heat Transfer and Thermal Engineering. Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-33-4765-6_93.

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5

Berthold, Arne, and Frank Haucke. "Experimental Study on the Alteration of Cooling Effectivity Through Excitation-Frequency Variation Within an Impingement Jet Array with Side-Wall Induced Crossflow." In Notes on Numerical Fluid Mechanics and Multidisciplinary Design. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-98177-2_21.

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Honami, S. "Flow Control of Impingement Jets and Wall Jets." In Impingement Jet Cooling in Gas Turbines. WIT Press, 2014. http://dx.doi.org/10.2495/978-1-84564-906-7/006.

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ITOH, Motoyuki, and Masashi OKADA. "An Experimental Study on the Radial Wall Jet on a Rotating Disk." In Engineering Turbulence Modelling and Experiments. Elsevier, 1996. http://dx.doi.org/10.1016/b978-0-444-82463-9.50048-4.

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Conference papers on the topic "Radial Wall Jet Impingement"

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Zuckerman, Neil, and Noam Lior. "Jet Impingement Heat Transfer on a Circular Cylinder by Radial Slot Jets." In ASME 2005 International Mechanical Engineering Congress and Exposition. ASMEDC, 2005. http://dx.doi.org/10.1115/imece2005-79565.

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To better understand and facilitate design of an impinging jet device, the heat transfer on a cylindrical target exposed to radial impinging slot jets was investigated using numerical methods. Numerical models were created to test the performance of the Shear Stress Transport (SST), Standard and Realizable k-epsilon, v2f, and Reynolds Stress Model (RSM) turbulence models versus published test data. Based on the validation study the v2f model was ultimately selected for further work. Models were then constructed to simulate a cylinder exposed to a radial array of slot jets. Parametric variation
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Chilukuri, R. "Inviscid, Axisymmetric, Annular Wall Jet Impingement As an Idealization of Cascade Thrust Reversers." In ASME-JSME-KSME 2019 8th Joint Fluids Engineering Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/ajkfluids2019-4641.

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Abstract An analytical solution to inviscid, axisymmetric, impinging wall jet flow is proposed as a limited idealization of internal flow within a cascade thrust reverser of an aircraft engine. Behavior of prior Bessel Series solution for round jets is critically examined, before extending the formulation to an annular jet with non-zero inner wall radius. Behavior and accuracy of prior spectral and finite difference algorithms are examined, leading to an efficient hybrid computational scheme. Jet inflow velocity profile has a deficit as well as non-zero vorticity-function at the inner radial b
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O’Donovan, Tadhg S., Darina B. Murray, and Andrew A. Torrance. "Impinging Jet Heat Transfer in the Transitional Wall Jet Region." In ASME 2005 Summer Heat Transfer Conference collocated with the ASME 2005 Pacific Rim Technical Conference and Exhibition on Integration and Packaging of MEMS, NEMS, and Electronic Systems. ASMEDC, 2005. http://dx.doi.org/10.1115/ht2005-72451.

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Convective heat transfer to an impinging air jet is known to yield high local and area averaged heat transfer coefficients. Such jets are of interest in the cooling of electronic components and of turbine blades and in manufacturing processes such as grinding. The current research is concerned with the measurement of heat transfer to an impinging air jet over a wide range of test parameters. These include Reynolds numbers, Re, from 10000 to 30000 and nozzle to impingement surface distance, H/D, from 0.5 to 8. The current research reports both mean and fluctuating heat transfer distributions up
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Taslim, M. E., and L. Setayeshgar. "Experimental Leading-Edge Impingement Cooling Through Racetrack Crossover Holes." In ASME Turbo Expo 2001: Power for Land, Sea, and Air. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/2001-gt-0153.

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Proper and efficient cooling of the turbine airfoil leading edge is imperative in increasing the airfoil life and overall efficiency of the gas turbine. To enhance the heat transfer coefficient in the leading-edge cavities, they are often roughened on three walls with ribs of different geometries. The cooling flow for these geometries usually enters the cavity from the airfoil root and flows radially to the airfoil tip or, in the most recent designs, enters the leading edge cavity from the adjacent cavity through a series of crossover holes on the partition wall between the two cavities. In th
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Zhao, Jiangang, and Roger E. Khayat. "Jet Impingement of a Non-Newtonian Fluid." In ASME 2006 International Mechanical Engineering Congress and Exposition. ASMEDC, 2006. http://dx.doi.org/10.1115/imece2006-15993.

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The similarity solutions are presented for the wall flow which is formed when a smooth planar jet of power-law fluids impinges vertically on to a horizontal plate, and spreads out in a thin layer bounded by a hydraulic jump. This problem is formulated analogous to radial jet flow problem and the solution procedure is accounted for by means of similarity solution of the boundary-layer equation [1] for Newtonian fluids. For the convenience of analysis, the flow may be divided into three regions, namely a developing boundary-layer region, a fully viscous boundary-layer region, and a hydraulic jum
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Huelsmann, Nathan C., and Karen A. Thole. "Effects of Jet Impingement on Convective Heat Transfer in Effusion Holes." In ASME Turbo Expo 2020: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/gt2020-15577.

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Abstract A common design for cooling the combustor liner of gas turbines is a double-wall composed of impingement jets that feed effusion cooling holes. An important cooling mechanism associated with the effusion hole is the convective cooling provided to the liner wall, which is in contact with the hot main gas flowing through the combustor. While the combination of impingement jets and effusion holes have been studied before, mostly in terms of cooling effectiveness, investigators have not fully evaluated the effect the impingement jet has on the local internal convection within the effusion
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Taslim, M. E., Y. Pan, and K. Bakhtari. "Experimental Racetrack Shaped Jet Impingement on a Roughened Leading-Edge Wall With Film Holes." In ASME Turbo Expo 2002: Power for Land, Sea, and Air. ASMEDC, 2002. http://dx.doi.org/10.1115/gt2002-30477.

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Compatible with the external contour of the turbine airfoils at their leading edge, the leading-edge cooling cavities have a complex cross-sectional shape. To enhance the heat transfer coefficient on the leading-edge wall of these cavities, the cooling flow in some designs enters the leading-edge cavity from the adjacent cavity through a series of crossover holes on the partition wall between the two cavities. The crossover jets then impinge on the concave leading-edge wall and exit through the showerhead film holes, gill film holes on the pressure and suction sides, and, in some cases, form a
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Parsons, J. A., J. C. Han, and C. P. Lee. "Rotation Effect on Jet Impingement Heat Transfer in Smooth Rectangular Channels With Four Heated Walls and Radially Outward Cross Flow." In ASME 1996 International Gas Turbine and Aeroengine Congress and Exhibition. American Society of Mechanical Engineers, 1996. http://dx.doi.org/10.1115/96-gt-387.

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The effect of channel rotation on jet impingement cooling by arrays of circular jets in two channels was studied. Jet flow direction was in the direction of rotation in one channel and opposite to the rotation direction in the other channel. The jets impinged normally on two smooth target walls. Heat transfer results are presented for these two target walls, for the jet walls containing the jet producing orifices, and for side walls connecting the target and jet walls. The flow exited the channels in a single direction, radially outward, creating a cross flow on jets at larger radii. The mean
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9

Taslim, M. E., L. Setayeshgar, and S. D. Spring. "An Experimental Evaluation of Advanced Leading Edge Impingement Cooling Concepts." In ASME Turbo Expo 2000: Power for Land, Sea, and Air. American Society of Mechanical Engineers, 2000. http://dx.doi.org/10.1115/2000-gt-0222.

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The main objective of this experimental investigation was to measure the convective heat transfer coefficient of impingement for different target wall roughness geometries of an airfoil leading edge, for jet to wall spacings and exit flow schemes. Available data in open literature are mostly for impingement on flat or curved smooth surfaces. This investigation covered two relatively new features in blade leading-edge cooling concepts namely the curved as well as roughened target surfaces. Experimental results are presented for four test sections representing the leading-edge cooling cavity wit
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10

Mani, Preeti, Ruander Cardenas, and Vinod Narayanan. "Submerged Jet Impingement Boiling on a Polished Silicon Surface." In ASME 2011 Pacific Rim Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Systems. ASMEDC, 2011. http://dx.doi.org/10.1115/ipack2011-52042.

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Submerged jet impingement boiling has the potential to enhance pool boiling heat transfer rates. In most practical situations, the surface could consist of multiple heat sources that dissipate heat at different rates resulting in a surface heat flux that is non-uniform. This paper discusses the effect of submerged jet impingement on the wall temperature characteristics and heat transfer for a non-uniform heat flux. A mini-jet is caused to impinge on a polished silicon surface from a nozzle having an inner diameter of 1.16 mm. A 25.4 mm diameter thin-film circular serpentine heater, deposited o
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Reports on the topic "Radial Wall Jet Impingement"

1

Cooper, Leonard Y. Ceiling jet properties and wall heat transfer in compartment fires near regions of ceiling jet-wall impingement. National Bureau of Standards, 1986. http://dx.doi.org/10.6028/nbs.ir.86-3307.

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