Numerical analysis with experimental comparison in duct flow using optimized heat sinks

Güreşçi, Kumru; Yeşildal, Faruk; Karabey, Altuğ; Yakut, Rıdvan; Yakut, Kenan

doi:10.1016/j.jrras.2017.10.008

Cited by 8 publications

(4 citation statements)

References 7 publications

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“…Moreover, ANSYS k-ԑ model options were used for numerical analysis. The model was preferred because it yielded convergent results in previous studies comparing the experimental and numerical results [10,13,21,22]. The analyses were performed for three different nozzle diameters (D=50, 63, and 75mm), 4 different flow velocities, and three different heat fluxes (q=2222, 3333, 4444 W/m 2 ) for the heat sink.…”

Section: Methodsmentioning

confidence: 99%

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Numerical Determination Of Cooling Performance On Heat Sink Using Impingement Jet

Karabey

AL-ANI

2023

Düzce Üniversitesi Bilim Ve Teknoloji Dergisi

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The use of impingement jet technics drew significant attention of researchers in the recent period. In this method, significant heat transfer rates are achieved. The present study examined the cooling performance of the fin pairs, which are aligned in a consecutively enlarging-contracting pattern and have a rectangular geometry, on a heat sink. The target geometry was optimized in the previous study by using the Taguchi method. The analyses were performed using four different impingement jet velocities (10, 12, 14, and 16 m/sec.), three different nozzle diameters (D=50, 63, and 75 mm), three different heat flux values (q=2222, 3333, and 4444 W/m2), and constant nozzle-to-target distance (h/d=1) were analyzed. These results were simulated numerically by using the ANSYS Fluent software. The k-ε realizable turbulence model was selected as the best model. The numerical results showed that the mean Nusselt number is directly proportional to the increase in the Reynolds number. The Nusselt number also increased with the increasing nozzle diameter value. The results are illustrated graphically (Nu-Re) in the present study. The peak value of the local Nusselt number was found to be at the stagnation point.

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Section: Methodsmentioning

confidence: 99%

“…In theoretical methods, the heat and flow characteristics are obtained by making use of numerical solutions of the governing differential equations. Nowadays, engineers use both experimental and CFD analysis effectively [10].…”

Section: Introductionmentioning

confidence: 99%

Numerical Determination Of Cooling Performance On Heat Sink Using Impingement Jet

Karabey

AL-ANI

2023

Düzce Üniversitesi Bilim Ve Teknoloji Dergisi

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“…The fin efficiency ratio of cylindrical micro-fin heat sink becomes greater than unity with artificial surface roughness [12]. Varying results (Nu-Re and f-Re) of hexagonal finned heat sinks proved that the friction factor decreases and Nusselt number enhanced with increasing Reynolds number [13].…”

Section: Introductionmentioning

confidence: 97%

Enhancement of Natural Convection Heat Transfer of Hybrid Design Heat Sink

Jasim¹

2020

IJHT

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Each type of fin has been investigated separately in many researches that are concerned with finding its performance under varying operating conditions, enhancement of heat sink performance by using the combination between two types of fin was investigated in this study. To establish a scientific comparison between models, a constant weight of the heat sink has been imposed. For that the total size of the original model (longitudinal-fin) was stabilized. Converting part of the original size into spin fins led to the emergence of a hybrid design that was studied by analytical and computational simulation. Under natural convection and Ra=10 7 , calculation process was performed for varying the surface area between (1-1.8) times. The strong agreement of the validation results (0.31 %-0.52 %) showed the reliability of the analytical model based on the ANSYS simulation. Hence, the results demonstrated that the hybrid designs have a discrimination in several aspects; reducing the fin temperatures is about (2.7% to 8.8%), lower thermal resistance by (24% to 46%) and augmentation of heat transferred by (31%-80%), compared with original heat sink. Improvement of thermal resistance and heat transferred does not behave in the same approach with all models (area ratio of greater than 1.6), because of the overlap between the negative effect of convection coefficient and increase of surface area. So, the approximate steady state can be happened.

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“…Virgin oil has been extracted for 1900 years and is put out as a mixture of virgin oil, gas, and groundwater. Depending on the advances in technology, more modern separation facilities were established in order to separate the mixtures extracted from underground (Güreşçi et al, 2017;Yayla et al, 2019). Firstly, the mixture is moved from storage tanks to separate oil, gas, and water by passing through a separating plant including all processes to separate wastewater (Escobar, 2005).…”

Section: Introductionmentioning

confidence: 99%

Effects of Corrugated Plates on Separation Performance

Oruç

Yayla

2022

Yüzüncü Yıl Üniversitesi Fen Bilimleri Enstitüsü Dergisi

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There are water, gas and some solid materials in mixtures extracted from underground. The method commonly used for separating the extracted mixtures of crude oil from water is the use of corrugated plates. The plates are used for gravity separation usually. In this study, the effects of three Re numbers of mixtures (3500, 4800, 6100), three values for the ratio of diameter of the hole to the width of the plate (d/w) (0.017, 0.025, 0.033) and three mounting angles of the plates to the separation unit (10, 30, 50 degrees) on the separation performance were investigated. With less experimentation and no impact on separation performance, the optimization process was carried out utilizing the design of Box-Behnken and the Response Surface Method (RSM). In addition, the same system was designed in the Computational Fluid Dynamics (CFD) program, and the optimum experiment was carried out numerically. The experimental and numerical results were compatible with one another. The ultimate separation performance was achieved as 99.25% when the mounting angle was 27 degrees, the d/w was 0.029 and the Re number was 4850.

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Numerical analysis with experimental comparison in duct flow using optimized heat sinks

Cited by 8 publications

References 7 publications

Numerical Determination Of Cooling Performance On Heat Sink Using Impingement Jet

Numerical Determination Of Cooling Performance On Heat Sink Using Impingement Jet

Enhancement of Natural Convection Heat Transfer of Hybrid Design Heat Sink

Effects of Corrugated Plates on Separation Performance

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