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Keywords: heat transfer enhancement
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Journal Articles
Article Type: Research Papers
J. Turbomach. July 2022, 144(7): 071014.
Paper No: TURBO-21-1233
Published Online: May 27, 2022
... by thermochromic liquid crystal (TLC) of the same geometry. Lower-order large-scale fluctuation and higher order small-scale disturbances were examined separately using Proper Orthogonal Decomposition (POD) to study the flow field characteristics and their individual effect on the heat transfer enhancement. Pin...
Journal Articles
Article Type: Research Papers
J. Turbomach. July 2022, 144(7): 071006.
Paper No: TURBO-21-1092
Published Online: February 25, 2022
... increase with the Reynolds numbers, which means that the swirl multi-pass channel has higher heat transfer enhancement capability at a higher Reynolds number. The circumferentially uniform heat transfer characteristic of swirling flow also performs well in this study. The high and circumferentially uniform...
Journal Articles
Article Type: Research Papers
J. Turbomach. September 2021, 143(9): 091015.
Paper No: TURBO-20-1382
Published Online: May 12, 2021
... by around 29% with a reduction in pressure loss by around 20%. Moreover, results show that the quarter-circular vane design provides higher overall averaged heat transfer enhancement than the semi-circular vane design by around 9% with penalty of higher pressure drop by 6%, which yields higher thermal...
Journal Articles
Article Type: Research Papers
J. Turbomach. August 2021, 143(8): 081013.
Paper No: TURBO-20-1348
Published Online: May 3, 2021
... is modified by off-setting one leg of the V to create a staggered discrete, V-shaped configuration. The ribs are oriented 45 deg relative to the streamwise coolant direction. The heat transfer enhancement and frictional losses are measured with varying Reynolds and rotation numbers. The Reynolds number varies...
Journal Articles
Article Type: Research Papers
J. Turbomach. March 2021, 143(3): 031001.
Paper No: TURBO-20-1248
Published Online: February 12, 2021
... of 0.1–0.25, an optimum value of 0.16 is observed. It is shown that triangular ribs are more prone to acoustic heat transfer enhancement than rectangular or cylindrical perturbations. A linear correlation between static pressure recovery rate and acoustic heat transfer enhancement is observed, which...
Journal Articles
Article Type: Research Papers
J. Turbomach. February 2020, 142(2): 021005.
Paper No: TURBO-19-1239
Published Online: January 24, 2020
... facility. After identifying the inherent acoustic resonance frequencies of the passageways, the impact of excitation is studied in various sound pressure levels, blockage ratios, as well as Strouhal and Reynolds numbers. The acoustic resonance excitation resulted in heat transfer enhancement of 20% and 10...
Journal Articles
Article Type: Research Papers
J. Turbomach. March 2012, 134(2): 021016.
Published Online: June 28, 2011
... mist cooling heat transfer enhancement multiphase flow gas turbine blade cooling curved surface Jet impingement heat transfer has been employed for many industrial applications such as the cooling of turbine blades and electrical equipment, drying of paper and textiles, and annealing...
Journal Articles
Article Type: Technical Briefs
J. Turbomach. October 2009, 131(4): 044501.
Published Online: June 30, 2009
... show extensive heat transfer enhancement as a function of extraction angle and suction ratio in the near-hole region and demonstrate good agreement with a corresponding study. Furthermore it was shown that the effect of a wall-to-coolant ratio is of a second order and can therefore be considered...