Journal of the Korean Society of Visualization (한국가시화정보학회지)

The Korean Society of Visualization (한국가시화정보학회)
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Comparison of Experimental and Simulation Results for Flow Characteristics around Jet Impingement/Effusion Hole in Concave Hemispherical Surface

오목한 반구면의 Jet Impingement/Effusion Hole 주변 유동 특성에 대한 실험과 시뮬레이션의 비교

  • Youn, Sungji (School of Mechanical Engineering, PNU) ;
  • Seo, Heerim (School of Mechanical Engineering, PNU) ;
  • Yeom, Eunseop (School of Mechanical Engineering, Pusan National University (PNU))
  • Received : 2022.06.21
  • Accepted : 2022.07.13
  • Published : 2022.07.31
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Abstract

Flow characteristics of jet impingement over concave hemispherical surface with effusion cooling holes is relatively more complex than that of a flat surface, so the experimental validation for computational fluid dynamics (CFD) results is important. In this study, experimental results were compared with simulation results obtained by assuming different turbulence models. The vortex was observed in the region between the central jets where the recirculation structure appeared. The different patterns of vorticity distributions were observed for each turbulence models due to different interaction of the injected jet flow. Among them, the transition k-kl-ω model predicted similarly not only the jet potential core region with higher velocity, but also the recirculation region between the central jets. From the validation, it may be helpful to accurately predict heat and mass transfer in jet impingement/effusion hole system.

Keywords

Acknowledgement

이 성과는 정부(과학기술정보통신부)의 재원으로 한국연구재단의 지원을 받아 수행된 연구임 (No. 2021R1I1A3047664). 본 연구의 실험은 부산대학교 서희림 석사에 의해 수행되었으며, 이에 감사드립니다.

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