... that after applying the coating, the wall superheat dramatically decreased to 8 K, which is 9 K lower than that on the original surface at 250 W·cm −2 , and has a better performance than a silicon pin-fin-based wetting hybrid surface. e-mail:  wangyaqiao@mail.sysu.edu.cn e-mail:  luojli3@mail2...

... fuel rotating cooling. The pressure increases rapidly in radial direction with a large span. For instance, the pressure varies from 0.1 MPa to 12 MPa with a rotating speed of 30,000 RPM. (2) The heat transfer is obviously enhanced with pin fins while the pressure loss is also increased...

... to the Nusselt number. microchannel, pillar pin fin jet in crossflow heat transfer enhancement micro particle image velocimetry (μPIV) turbulent kinetic energy (TKE) Because of the predominantly laminar flow, and despite its many advantages, convective heat transfer in microdomains...

... is about 1 °C. For all computation cases, an unstructured hybrid mesh was generated using the commercial preprocessing software GAMBIT , and the near-wall flow region was meshed with denser grids by using a boundary layer as is shown in Fig. 4 . The meshing scheme for the pin fin channel, 1# and 2# pin...

...Sin Chien Siw; Minking K. Chyu; Tom I.-P. Shih; Mary Anne Alvin Heat transfer and pressure characteristics in a rectangular channel with pin-fin arrays of partial detachment from one of the endwalls have been experimentally studied. The overall channel geometry (W = 76.2 mm, E = 25.4 mm) simulates...

...Yu Rao; Yamin Xu; Chaoyi Wan A numerical study was conducted to investigate the effects of dimple depth on the flow and heat transfer characteristics in a pin fin-dimple channel, where dimples are located spanwisely between the pin fins. The study aimed at promoting the understanding...

...Markus Schwänen; Andrew Duggleby Internal cooling of the trailing edge region in a gas turbine blade is typically achieved with an array of pin fins. In order to better understand the effectiveness of this configuration, high performance computations are performed on cylindrical pin fins...

...D. Sahray; G. Ziskind; R. Letan This paper provides further insight in heat transfer from horizontal-base pin fin heat-sinks in free convection of air. The main objective is to assess the effect of base size, and this with regard to the effects of fin height and fin population density studied...

...Syed M. Zubair; A. F. M. Arif; Mostafa H. Sharqawy Analytical solutions for temperature distribution, heat transfer rate, and fin efficiency and fin effectiveness are derived and presented for orthotropic two-dimensional pin fins subject to convective-tip boundary condition. The generalized results...

...H. S. Kang A pin fin with variable fin base thickness is optimized using a two-dimensional analytic method. The values of the inner wall temperature and fin volume are given as constants. The fin base temperature varies with variation in the fin base thickness, fin outer radius, fin length...

...D. Sahray; H. Shmueli; G. Ziskind; R. Letan This paper aims at deeper understanding of heat transfer from horizontal-base pin-fin heat sinks with exposed edges in free convection of air. The effects of fin height and fin population density are studied experimentally and numerically. The sinks...

...Nwosu P. Nwachukwu; Samuel O. Onyegegbu s An expression for the optimum pin fin dimension is derived on exergy basis for a high temperature exchanger employing pin fins. The present result differs from that obtained by Poulikakos and Bejan (1982, “Fin Geometry for Minimum Entropy Generation...

...Ali Koşar; Yoav Peles An experimental study on heat transfer and pressure drop of de-ionized water over a bank of shrouded staggered micro pin fins 243 μ m long with hydraulic diameter of 99.5 μ m has been performed. Average heat transfer coefficients have been obtained for effective heat fluxes...

...B. Kundu; P. K. Das In this paper, a generalized methodology for the optimum design of thin fins with uniform volumetric heat generation is described. Using variational calculus, the optimum profiles of longitudinal, annular, and pin fins are determined from the basic fin equation under...