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.
|Number of pages||12|
|Journal||Journal of Taiwan Society of Naval Architects and Marine Engineers|
|Publication status||Published - 2013 May 1|
All Science Journal Classification (ASJC) codes
- Ocean Engineering
- Mechanical Engineering