Investigation of laminar to turbulent transition phenomena effects on impingement heat transfer

Isman, Mustafa Kemal; Morris, Philip J.; Can, Muhiddin

doi:10.1007/s00231-015-1719-8

Cited by 11 publications

(1 citation statement)

References 19 publications

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“…The behaviour of coherent structures in the synthetic jets has also been addressed in the numerical studies. 28,29 For wide range of Reynolds number, the ability of shear stress transport (SST) model in predicting the thermal performance of impinging jets is investigated by Isman et al 30 Thermal Performance and vortex dynamics of synthetic jets in the presence of cross-flows have been investigated to an extent. 31,32 The role of Ω − shaped vortices in the perturbation of boundary layer has been demonstrated.…”

Section: Introductionmentioning

confidence: 99%

Flow Field and Heat Transfer of an Impinging Synthetic Jet in the Presence of Cross-Flow: Application of SAS and DES Approaches

Bazdidi–Tehrani

Saadniya

Rashidzadeh

2021

Proceedings of the Institution of Mechanical Engineers, Part E:

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Nowadays, synthetic jets have various applications such as cooling enhancement and active flow control. In the present paper, the capability of two turbulence modelling approaches in predicting thermal performance of an impinging synthetic jet is investigated. These two approaches are scale adaptive simulation (SAS) and detached eddy simulation (DES). Comparisons between numerical data and experimental studies reveal that the ability of DES in predicting the asymmetrical trend of heat transfer profiles is better than SAS in almost all the study cases. Although, near the stagnation zone, the performance of SAS is superior. Results show that the effects of parameters such as frequency, cross-flow velocity and suction duty cycle factor are well predicted by both approaches. An increase of cross-flow velocity from 1.81 m/s to 2.26 m/s results in an improvement of [Formula: see text] near the stagnation point by almost 16.3% and 9.2% using DES and SAS, respectively.

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