Abstract
This study experimentally investigates the pressure drop coefficients (f) and the detailed Nusselt numbers (Nu) distributions over the endwall of a rectangular channel fitted with rhombus pin-fin array with the aid of numerical turbulent flow structures predicted by STAR-CD CFD code. A set of numerical flow results and heat transfer data with detailed Nu distributions, along with the f coefficients measured at isothermal conditions, were selected to illustrate the mechanisms of heattransfer and pressure-drop augmentations attributed to the rhombus pin-fin array arranged in staggered manner. Local and area-averaged Nusselt numbers (Nu and Nu), f coefficients and thermal performance factors (TPF) between two rectangular channels enhanced by circular and rhombus pin-fins in the Reynolds number (Re) range of 5000≤Re≤15000 are subsequently compared to reveal the competitive advantages of rhombus pin-fin array for cooling applications. Empirical Nu and f correlations for the test channel with rhombus pin-fins are generated to assist relevant design activities.
| Original language | English |
|---|---|
| Pages (from-to) | 55-66 |
| Number of pages | 12 |
| Journal | Journal of Taiwan Society of Naval Architects and Marine Engineers |
| Volume | 32 |
| Issue number | 2 |
| Publication status | Published - 2013 May 1 |
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All Science Journal Classification (ASJC) codes
- Ocean Engineering
- Mechanical Engineering
Cite this
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Numerical flow and experimental heat transfer of rectangular channel with rhombus PIN-FINS. / Chang, Shyy-Woei; Lee, T. H.
In: Journal of Taiwan Society of Naval Architects and Marine Engineers, Vol. 32, No. 2, 01.05.2013, p. 55-66.Research output: Contribution to journal › Article
TY - JOUR
T1 - Numerical flow and experimental heat transfer of rectangular channel with rhombus PIN-FINS
AU - Chang, Shyy-Woei
AU - Lee, T. H.
PY - 2013/5/1
Y1 - 2013/5/1
N2 - This study experimentally investigates the pressure drop coefficients (f) and the detailed Nusselt numbers (Nu) distributions over the endwall of a rectangular channel fitted with rhombus pin-fin array with the aid of numerical turbulent flow structures predicted by STAR-CD CFD code. A set of numerical flow results and heat transfer data with detailed Nu distributions, along with the f coefficients measured at isothermal conditions, were selected to illustrate the mechanisms of heattransfer and pressure-drop augmentations attributed to the rhombus pin-fin array arranged in staggered manner. Local and area-averaged Nusselt numbers (Nu and Nu), f coefficients and thermal performance factors (TPF) between two rectangular channels enhanced by circular and rhombus pin-fins in the Reynolds number (Re) range of 5000≤Re≤15000 are subsequently compared to reveal the competitive advantages of rhombus pin-fin array for cooling applications. Empirical Nu and f correlations for the test channel with rhombus pin-fins are generated to assist relevant design activities.
AB - This study experimentally investigates the pressure drop coefficients (f) and the detailed Nusselt numbers (Nu) distributions over the endwall of a rectangular channel fitted with rhombus pin-fin array with the aid of numerical turbulent flow structures predicted by STAR-CD CFD code. A set of numerical flow results and heat transfer data with detailed Nu distributions, along with the f coefficients measured at isothermal conditions, were selected to illustrate the mechanisms of heattransfer and pressure-drop augmentations attributed to the rhombus pin-fin array arranged in staggered manner. Local and area-averaged Nusselt numbers (Nu and Nu), f coefficients and thermal performance factors (TPF) between two rectangular channels enhanced by circular and rhombus pin-fins in the Reynolds number (Re) range of 5000≤Re≤15000 are subsequently compared to reveal the competitive advantages of rhombus pin-fin array for cooling applications. Empirical Nu and f correlations for the test channel with rhombus pin-fins are generated to assist relevant design activities.
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M3 - Article
VL - 32
SP - 55
EP - 66
JO - Journal of Taiwan Society of Naval Architects and Marine Engineers
JF - Journal of Taiwan Society of Naval Architects and Marine Engineers
SN - 1023-4535
IS - 2
ER -