Heat transfer characteristics of laminar slot jet arrays impinging on a constant target surface temperature

Shariatmadar, Hamed; Momeni, Amin; Karimi, Amir; Ashjaee, Mehdi

doi:10.1016/j.applthermaleng.2014.10.089

“…where x is distance from the jet axis. The ratio of pressure difference to the slot length is the source term in equation (9). Although it is custom to give fluid inlet velocity constant profile [1], a fully developed channel profile was used here.…”

Section: Governing Equations and Boundary Conditionsmentioning

confidence: 99%

Hysteresis of Planar Double Slot Impinging Air Jets

Tisovský

¹

,

Vít

²

2018

EPJ Web Conf.

0

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In present study, the bistability and hysteresis of the non-isothermal flow behind two slot nozzle is numerically investigated. Theoretical review of bistability of isothermal stagnation flow is presented and both flow field patterns that exist in the region of bistability are commented on. Hysteresis is found in number of conducted simulations and effects of various parameter changes are discussed. Moreover, the mechanism of transition from one flow field pattern to another is discussed for both transition directions. In conclusion, validity of 2D simulation results against real 3D problems is of concern and general contribution of this research is discussed. Throughout this work, emphasis is on applications regarding heat transfer.

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“…Forouzanmehr et al (2015) developed a numerical algorithm to obtain the optimal configuration of four planar impinging slot jets to produce uniform heat flux along isothermally heated flat plate. Similarly, the flow characteristics of low speed quadruple slot jet arrays is analyzed by Shariatmadar et al (2015;2016). In the analysis, jet-to-plate spacing varied from 26.4 mm to 27.6 mm, slot width in the range of 2-5 mm, and jet-to-jet spacing is taken to be between 2 mm to 3 mm.…”

Section: Introductionmentioning

confidence: 99%

Flow Analysis of a Symmetrical Channel with Multiple Jets at the Upper Wall

Kayansayan¹

2020

ujme

0

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The objective of this study is to analyze experimentally and numerically the flow characteristics of a symmetric channel arisen from flow modeling of the blade cooling problem. The two ends of the flat channel are open and five evenly spaced air jets of equal strength at the upper wall configure a symmetrical flow around the mid-slot symmetry axis. The parameters that govern the flow characteristics of such a system are; the channel height, the jet spacing, and the jet velocity. In the analysis, the slot width is kept constant, but the channel height to slot width ratio

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“…Shariatmadar et al presented a study concerning heat transfer characteristics of laminar slot jet arrays impinging on a constant target surface temperature. [9] In their paper, they also investigated double slot impinging jet configuration and they obtained results corresponding to both flow patterns of concern in this paper. However, they did not comment on hysteresis nor bistability.…”

Section: Introductionmentioning

confidence: 99%

Hysteresis of Planar Double Slot Impinging Air Jets

Tisovský

¹

,

Vít

²

2018

EPJ Web Conf.

0

View full text Add to dashboard Cite

In present study, the bistability and hysteresis of the non-isothermal flow behind two slot nozzle is numerically investigated. Theoretical review of bistability of isothermal stagnation flow is presented and both flow field patterns that exist in the region of bistability are commented on. Hysteresis is found in number of conducted simulations and effects of various parameter changes are discussed. Moreover, the mechanism of transition from one flow field pattern to another is discussed for both transition directions. In conclusion, validity of 2D simulation results against real 3D problems is of concern and general contribution of this research is discussed. Throughout this work, emphasis is on applications regarding heat transfer.

show abstract

Heat transfer characteristics of laminar slot jet arrays impinging on a constant target surface temperature

Cited by 23 publications

References 27 publications

Hysteresis of Planar Double Slot Impinging Air Jets

Hysteresis of Planar Double Slot Impinging Air Jets

Flow Analysis of a Symmetrical Channel with Multiple Jets at the Upper Wall

Hysteresis of Planar Double Slot Impinging Air Jets

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