Experimental investigation on thermo-physical characteristics of fluid flow in circular tube enhanced with circular rings with different arrangements

Patil, Adhikrao S.; Kore, Sandeep S.

doi:10.1080/01430750.2019.1608859

Cited by 6 publications

(4 citation statements)

References 20 publications

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“…To experimental results and numerical data for numerous heats transfer enhancement techniques have been proposed and presented. Among them are twisted tape [3,4], circular ring turbulator [4][5][6][7], conical shaped geometry [8][9], conical rings [10], Vnozzle [11], diamond-shape tabulators [11], The investigation of several inserts with diverse configurations of shape and geometry such as perforated circular ring [12][13][14][15][16], The effects of conicalnozzle form ring inserts on factors related to friction and heat transfer were investigated in a circular tube with convergent and divergent nozzle configurations. The pressure surge is significantly reduced with increasing porosity [17][18].…”

Section: Introductionmentioning

confidence: 99%

Computational Study and Enhancement of Heat Transfer Rate by Using Inserts Introduced in a Heat Exchanger

Kore

Chaudhary²,

Patil³

et al. 2023

ARFMTS

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The research provides a numerical and computational analysis of improving heat transfer rate in heat exchangers employing obstructing geometries such as Circular Ring, Circular Ring with` clearance, and Hexagonal ring tabulators with different pitch diameter ratios (PDR). All geometries were evaluated with flow obstruction areas of 0.3, 0.4, and 0.5. Flow obstruction area and Reynolds number were the variables that changed during the testing. The pitch diameter ratio employed in the investigation is one. The Reynolds number was changed between 6000 and 21000. For numerical examination, k--ε technique was used in this study. The use of flow obstruction geometry as a turbulator improves heat transmission derived from the hot surface of the pipe to the air throughout the test region substantially. In this research work, the tested designs, a circular ring separated from the tube wall and a hexagonal ring with the same flow blockage area improve heat transmission. Hexagonal rings incur a lower fluid friction cost than circular rings and circular rings with clearance. The maximal heat transfer enhancement (Nut/Nup) for the diameter ratio of the insert of 0.6.3 is 2.28–3.01.

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Section: Introductionmentioning

confidence: 99%

Computational Study and Enhancement of Heat Transfer Rate by Using Inserts Introduced in a Heat Exchanger

Kore

Chaudhary²,

Patil³

et al. 2023

ARFMTS

View full text Add to dashboard Cite

show abstract

“…The convective heat transfer rate between a heated wall and a flowing fluid greatly affects the thermal performance of the heat-exchanging devices. 1,2 For enhancing the convective heat transfer and lowering the loss of pressure across the heat exchanger, it is possible to decrease the size and cost of the heat-exchanging device besides the amount of energy that must be pumped. The convective heat transfer rate is accelerated and improved by increasing the turbulence, restricting and blocking the fluid flow, as well as by creating a swirl by changing the surfaces.…”

Section: Introductionmentioning

confidence: 99%

“…The convective heat transfer rate between a heated wall and a flowing fluid greatly affects the thermal performance of the heat‐exchanging devices 1,2 . For enhancing the convective heat transfer and lowering the loss of pressure across the heat exchanger, it is possible to decrease the size and cost of the heat‐exchanging device besides the amount of energy that must be pumped.…”

Section: Introductionmentioning

confidence: 99%

“…Patil and Kore 1 examined the effects of inserting rings into the tube to produce a variety of arrangements, including diverging portions, converging sections, and converging–diverging sections with different circular ring configurations. To produce 30%, 40%, and 50% flow blockage areas (FBAs), a circular ring was designed with varied inner diameters.…”

Section: Introductionmentioning

confidence: 99%

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Investigation of heat transfer augmentation in a horizontal tube using different rectangular cut ring inserts

2023

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Experimental and computational investigations have studied the heat transfer, friction factor, and enhancement of heat transfer in a horizontal tube equipped with rectangular cut ring inserts and different diameter ratios (D/d) and pitch-to-tube diameter ratios (p/d t ). In the present study, air having a Reynolds no. range of 6700-20,100 was used as a working fluid. Three diameter ratios (D/d) were considered experimentally and numerically as 1.2, 1.25, and 1.3, and the pitch-totube diameter ratio (p/d t ) was (1, 0.625, and 0.5). Air was forced as working fluid through the tube and a uniform heat flux of 2000, 3500, and 5000 W/m 2 was applied through the tube's exterior surface. On the basis of the turbulence model k-ɛ with various parameters, three-dimensional numerical simulations using the ANSYS Fluent software 17.2 were investigated. Under the same working conditions, the results manifested a higher heat transfer rate and friction factor as compared to the plain tube. The results evinced that the Nusselt number for a horizontal tube equipped with rectangular cut ring inserts having various pitch ratios and diameter ratios is discovered to be higher than that for the plain tube. With the increased ring spacing, the overall improvement in heat transfer occurred. And, with a rise in Re, the total

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Thermal performance of plus shape divider type turbulator with different inclination angles

Shinde

Kalos

Kore

2021

Materials Today: Proceedings

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Experimental investigation on thermo-physical characteristics of fluid flow in circular tube enhanced with circular rings with different arrangements

Cited by 6 publications

References 20 publications

Computational Study and Enhancement of Heat Transfer Rate by Using Inserts Introduced in a Heat Exchanger

Computational Study and Enhancement of Heat Transfer Rate by Using Inserts Introduced in a Heat Exchanger

Investigation of heat transfer augmentation in a horizontal tube using different rectangular cut ring inserts

Thermal performance of plus shape divider type turbulator with different inclination angles

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