Design Analysis of Impinging Jet Array Heat Transfer From a Surface With V-Shaped and Convergent–Divergent Ribs by the Taguchi Method

Çalışkan, Sinan; Khalaji, Mansour Nasiri; Baskaya, Senol; Kotcioğlu, İsak

doi:10.1080/01457632.2015.1119596

Cited by 15 publications

(3 citation statements)

References 27 publications

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“…In this method, one of the ranking method, observation method, variance method, analysis of factor effects, column differences method and graphical representation methods are applied to determine factor levels (Ross, 1989). In another study (Caliskan, et al, 2015), using the Taguchi method, Reynolds's number and jet-plate distances performed heat transfer measurements on the surface for a sequential jet array.…”

Section: Taguchi Methodsmentioning

confidence: 99%

Numerical Simulation of Annular Flow boiling in Millimeter-scale Channels and Investigation of Design Parameters Using Taguchi Method

Koca

Khalaji

2019

Bilge International Journal of Science and Technology Research

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As the technology progresses, the electronic components become smaller and at the same time continue to produce more heat, and therefore development of new high heat-flux cooling technologies have become obligatory. The mini and millimeter-scale phase change cooling systems, which have a reduced size and a large surface area where heat transfer can take place, have become an integral part of advanced cooling systems. When comparing phase-change cooling systems with other cooling systems, a relatively low flow rate of very high evaporation heat, which is associated with the phase change for most fluids, allows large amounts of heat to dissipate with flow boiling and substantially solves the many problems. The two-phase cooling technologies used for critical applications include; heat pipes, loop heat pipes and capillary pumped loops which are all passive hence very reliable solutions relying on only capillary effects. Though this passive device cannot meet future high cooling demands because of the limitations of the capillary pumping in terms of heat flux, transport distance and multiple heat source capabilities. On the other hand, in boiling and condensing flows functionality problems arise since at the micrometer and millimeter-scale, shear/pressure forces dominate over gravitational forces and cause thermally hydro-dynamically ineffective/problematic liquid-vapor configurationssuch as plug/slugs flow regimes. For this reason, to overcome the requirement of large amounts of heat transfer from limited spaces and resolving the above problem, novel millimeter-scale phase-change devices should be developed. In this study, for the design of millimeter-scale boilers a 3D Ansys-Fluent© simulation model was developed and numerical simulations were conducted for two different cooling fluids (water and FC-72), different mass flow rates and two different channel heights. Moreover, to examine the simulation results Taguchi method was used. In order to realize thin film annular flow over the boiler surface, employed specific boundary conditions in the 3D simulation model were obtained by means of one dimensional Matlab© simulation code. By means of utilizing the evaluated numerical results, distribution of heat transfer coefficient, vapor quality and pressure drop over the heat transfer surfaces were reported.

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Section: Taguchi Methodsmentioning

confidence: 99%

Numerical Simulation of Annular Flow boiling in Millimeter-scale Channels and Investigation of Design Parameters Using Taguchi Method

Koca

Khalaji

2019

Bilge International Journal of Science and Technology Research

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“…Based on previous study, V-shaped ribs, as a special 45-deg ribs, was proposed and shown the higher overall thermal performance in the cooling structure. Vshaped rib was introduced and investigated using Taguchi experimental design method by Sinan Caliskan et al (2016). And miniature V ribs arranged upstream the dimples elevate the heat transfer performance of the dimples and obtained more uniform heat transfer distribution in TLC experiment (Rao et al 2020).…”

Section: Introductionmentioning

confidence: 99%

Flow and Heat Transfer Performance of Channels with ‎‎45 Degree Ribs in Staggered Array‎

2021

JAFM

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The cooling efficiency of blade is growing demand with increasing turbine inlet temperature in gas turbine development. Ribs used in cooling channels is a common cooling structure, therefore, many configurations were studied by previous literatures, including angle, spacing, shape etc. However, there are less research about the dislocation ribs structure. In this paper, the 45-deg parallel ribs, crossed ribs and dislocation ribs were investigated by numerical simulation, in order to reveal the heat transfer performance and flow mechanism. Refer to the experiment, SST k-ω model was applied in steady simulation, at Re from 20000 to 50000. Due to the angled ribs can induce the secondary flow and generate small helical vortices at front corner, heat transfer performance was elevated. The large rotating vortices influenced by the ribs arrangement occupy the center channel, thence the dislocation caused different flow and heat transfer results. The results shown that parallel rib has higher heat transfer enhancement than crossed ribs, but pressure loss possess considerable level. At Re=21587, the averaged turbulent kinetic energy of Case2.2 with dislocation ribs is 22.4% lower than parallel ribs. The all 45-deg crossed ribs present higher level of overall thermal performance, and Case2.2 is optimal for the range of Re investigated.

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“…Taguchi method, also called as Taguchi's method, was proposed by Professor Taguchi in 1967. As a means of product quality control and optimization in the early stage, it was soon spread [1][2][3][4][5]. is method is a feasible way to avoid the full factorial experiment of testing all combinations of parameters in an experiment, which means it can obtain the excellent and stable products by using as few test times as possible, and it is conducive to improving the rate of good products in the meanwhile.…”

Section: Introductionmentioning

confidence: 99%

An Improved Taguchi Algorithm Based on Fitting and Prediction for Linear Antenna Array Synthesis

Cheng

Peng

2019

International Journal of Antennas and Propagation

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In this paper, a Taguchi method based on fitting and prediction is proposed to accelerate the optimization process in antenna array synthesis. The implementation procedure combines the normal Taguchi method and the curve fitting technique. A possible solution is determined by prediction based on fitting curves. Specifically, the fitting curves are obtained by using the dynamic points calculated and updated as the Taguchi method progress and recorded in the response table necessarily produced in the procedure. Test functions are used for conducting some confirmation experiments, and the results verify the validity of the proposed method. In order to illustrate its good practicability, two linear antenna arrays with a null controlled pattern and a flat top pattern, respectively, are successfully optimized by using both of the normal Taguchi method and the proposed one. Some comparisons and discussions of their results are given in the paper, which proves that the proposed method has a better practicability, not only because it inherits the global optimization characteristics of the normal Taguchi method but also because it accelerates the convergence process.

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Design Analysis of Impinging Jet Array Heat Transfer From a Surface With V-Shaped and Convergent–Divergent Ribs by the Taguchi Method

Cited by 15 publications

References 27 publications

Numerical Simulation of Annular Flow boiling in Millimeter-scale Channels and Investigation of Design Parameters Using Taguchi Method

Numerical Simulation of Annular Flow boiling in Millimeter-scale Channels and Investigation of Design Parameters Using Taguchi Method

Flow and Heat Transfer Performance of Channels with ‎‎45 Degree Ribs in Staggered Array‎

An Improved Taguchi Algorithm Based on Fitting and Prediction for Linear Antenna Array Synthesis

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