Thermal characterization of a plate heated by a multi-jet system

This study is an experimental and numerical analysis of the influence from changes in the conditions of inputs temperature and velocity on the behavior thermal and dynamic of a multi-jet swirling system impacting a flat plate. The experimental device comprising three diffusers arranged in line, of diameter D aloof 2D between the axes of their centers, impinging the plate perpendicularly at an impact height H = 6D. The swirl is obtained by a generator (swirl) of composed 12 fins arranged at 60° relative to the vertical placed just at the exit of the diffuser. By imposing the temperature and velocity for three input conditions with three studied configurations. The paper deals with find the configuration that optimizes the best thermal homogenization. The results show that the configuration having an equilibrated inlet temperature (T, T, T) is derived from a good temperature distribution on the baffle wall and a better thermal transfer from the plate. The system was numerically simulated by the fluent code by using the turbulence model (k–ε). This last has yielded results accorded to those experimental results.

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Thermal characterization of MMIC by Numerical Analysis

2005 Asia-Pacific Microwave Conference Proceedings ◽

10.1109/apmc.2005.1606502 ◽

2006 ◽

Cited By ~ 1

Author(s):

Chang Soo Kwak ◽

Jin Cheol Jung ◽

Dong Pil Chang ◽

In Bok Yom

Keyword(s):

Numerical Analysis ◽

Thermal Characterization

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Experimental Study and Numerical Analysis of Water Single-Phase Pressure Drop Across an Array of Circular Micro-Pin-Fins

ASME/JSME 2011 8th Thermal Engineering Joint Conference ◽

10.1115/ajtec2011-44583 ◽

2011 ◽

Cited By ~ 5

Author(s):

Jonathan R. Mita ◽

Weilin Qu ◽

Marcelo H. Kobayashi ◽

Frank E. Pfefferkorn

Keyword(s):

Numerical Analysis ◽

Pressure Drop ◽

Cross Section ◽

Single Phase ◽

Three Dimensional ◽

Circular Cross Section ◽

Experimental Results ◽

Inlet Temperature ◽

Pin Fins ◽

Micro Pin Fins

This study investigates pressure drop associated with water liquid single-phase flow across an array of staggered micro-pin-fins having circular cross-section. The micro-pin-fins are micro-end milled out of oxygen free copper and have the following dimensions: 180 micron diameter and 683 micron height. The longitudinal pitch and transverse pitch are equal to 400 microns. Seven water inlet temperatures from 22 to 80 °C, and seventeen maximum mass velocities for each inlet temperature, ranging from 159 to 1475 kg/m2s, were tested. The test module was well insulated to maintain adiabatic conditions. The experimental results were compared to those from a micro-pin-fin array having similar size and geometrical arrangement but a square cross-section. The circular micro-pin-fins were seen to yield a significantly lower pressure drop than the square micro-pin-fins. The present experimental results were also compared with the predictions of several friction factor correlations as well as the results from a three-dimensional numerical analysis. Neither was able to accurately predict the experimental data.

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Characterization of real and substitute birds through experimental and numerical analysis of momentum, average impact force and residual energy in bird strike on three rigid targets: A flat plate, a wedge and a splitter

International Journal of Impact Engineering ◽

10.1016/j.ijimpeng.2016.08.009 ◽

2017 ◽

Vol 99 ◽

pp. 1-13 ◽

Cited By ~ 12

Author(s):

Frederik Allaeys ◽

Geert Luyckx ◽

Wim Van Paepegem ◽

Joris Degrieck

Keyword(s):

Numerical Analysis ◽

Flat Plate ◽

Impact Force ◽

Residual Energy ◽

Bird Strike ◽

Average Impact

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A new model based on experimental results for the thermal characterization of bricks

Building and Environment ◽

10.1016/j.buildenv.2008.07.016 ◽

2009 ◽

Vol 44 (5) ◽

pp. 1047-1052 ◽

Cited By ~ 23

Author(s):

José-Luis Vivancos ◽

Juan Soto ◽

Israel Perez ◽

Jose V. Ros-Lis ◽

Ramón Martínez-Máñez

Keyword(s):

Thermal Characterization ◽

Experimental Results ◽

New Model ◽

Model Based

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A Simple Experimental Method for Thermal Characterization of Shape-Stabilized Phase Change Materials

Journal of Solar Energy Engineering ◽

10.1115/1.3197838 ◽

2009 ◽

Vol 131 (4) ◽

Cited By ~ 2

Author(s):

E. Palomo Del Barrio ◽

J. L. Dauvergne ◽

V. Morisson

Keyword(s):

Phase Change ◽

Phase Change Materials ◽

Single Point ◽

Thermal Characterization ◽

Experimental Device ◽

Transfer Model ◽

Conduction Model ◽

Numerical Heat Transfer ◽

Energy Balances

A new method for characterization of shape-stabilized phase change materials (PCMs) based on one single sample and one single experimental device has been proposed. The simplicity of the experimental device is comparable to that of the T-history method: a cylinder of PCM, which is heated/cooled in a furnace following specific temperature patterns (steps, isotherms, and ramps). Instead of simple energy balances as in the T-history method, a numerical heat transfer model is used to retrieve the whole set of parameters/functions characterizing the PCM from temperature measurements at one single point within the PCM. A powerful inversion technique has been proposed for that. Its most striking feature is that it allows identification of enthalpy-temperature functions in an easy way. They are retrieved by solving a problem of time-dependent source estimation by inversion of a linear heat conduction model. It is shown that unknown sources are the output of a linear and invariant state model whose inputs are measured temperatures within the PCM. Enthalpy-temperature functions, as well as parameters derived from heat capacities, transition temperatures, and latent heat, are thus calculated in a simple way. An experimental test for characterization of graphite/salt composites has been carried out to illustrate the appropriateness of our developments.

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Numerical and experimental characterization of singularities of a six-wire parallel architecture

Robotica ◽

10.1017/s0263574706003110 ◽

2006 ◽

Vol 25 (3) ◽

pp. 315-324 ◽

Cited By ~ 18

Author(s):

Erika Ottaviano ◽

Marco Ceccarelli

Keyword(s):

Numerical Analysis ◽

Tracking System ◽

Parallel Architecture ◽

Operating Conditions ◽

Experimental Results ◽

Experimental Characterization ◽

Singular Configurations ◽

Experimental Analyses ◽

The Wire

SUMMARYA characterization of singularities for a six-wire parallel architecture is presented as a result of numerical and experimental analyses. Numerical analysis has been developed through geometrical and analytical considerations. The study is based on a classification that has been derived on the basis of the geometry of tetrahedra, and singular configurations have been classified as a function of the tetrahedron volume. Experimental characterization has been carried out by considering the wire parallel architecture Cassino tracking system (CATRASYS). Experimental results are reported to characterize the performance of the CATRASYS chain in different operating conditions as an illustrative practical example.

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Effect of Temperature on the Ink Transfer of sublimation Printing Process

International Journal of Scientific Research in Science Engineering and Technology ◽

10.32628/ijsrset21832 ◽

2021 ◽

pp. 32-35

Author(s):

Phung Thi Mai Hong ◽

Hoang Thi Kieu Nguyen

Keyword(s):

Thermal Characterization ◽

Experimental Results ◽

Effect Of Temperature ◽

Optimum Operating ◽

Processing Temperature ◽

Printing Technology ◽

Printing Process ◽

Single Colour ◽

Ink Transfer

The effect of temperature on the ink transfer of sublimation printing technology was investigated. The ink transfer was conducted by the colour density of single solid inks and the ink trapping of overprinted solid inks. The experimental results indicate that the amount of ink transferred from the colour ribbon to the substrate is determined by the thermal characterization of dye materials. The densities of single colour inks as well as the ink trapping coefficients obtain the highest values at the temperature corresponding to the endothermic peaks of the dye materials. This is the optimum operating processing temperature.

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