... surface. The results show that mixed wettability surfaces with strategically sized and positioned hydrophobic patches on a hydrophilic surface can result in high heat flux for pool boiling across the entire range of surface superheat or Jacob number (Ja) by combining the advantages of hydrophobic surface...

... to the temperature distribution and thermal radiation characteristics of the flame. Based on the SLHS model, three types of thermal radiation models called cone-cylinder-cone, ellipsoid-cylinder-ellipsoid, and ellipsoid-cylinder-cone models are built for computing the radiant heat flux distribution around the jet...

... correlations, radiant and convective heat fluxes to the pool surface, and plume radiant fraction. Additional analyses were performed in the pool boundary layer to assess simulated flame anchoring and the effect on convective heat fluxes. This work assesses the capability of the latest Fuego physics...

... square distorts the convection patterns, slows down the flow, and provides a compartment to confine the fluid at the core of the enclosure. Ultimately, this lowers the local Nusselt number, Nu, along the hot wall, and reduces the heat flux through the enclosure. The analysis shows the effects of changing...

... less than that with plain aluminum surface. The excess temperature (Δ T e ) reduces from 7.4 to 3.3 K for boiling heat flux of 0.22 MW/m 2 and 10.3 to 6.2 K for 0.62 MW/m 2 by the combined application of GMSP over the coated surface. The combined use of coated surface with the gridded...

... measurements. This study utilizes the solution to three-dimensional (3D) inverse heat conduction problem to estimate transient temperatures on the impingement side. Then, the temperature gradient is determined near the impingement wall (∼0.01 mm inside) with which transient heat flux is estimated...

... is subjected to heat flux and moisture flux at the surface, as shown in Fig. 1 . As mentioned before, here we only consider the hygrothermal effect on elastic stresses and deformation; conversely, temperature and moisture do not change as a response of elastic field. For convenience of analysis, we introduce...

...K. S. Kulkarni; U. Madanan; T. W. Simon; R. J. Goldstein If a steady thermal boundary layer is sufficiently thick, wall heat fluxes and associated convective heat transfer coefficients can be directly calculated from measured temperature distributions taken within it using a traversing thermocouple...

... when the wall temperature of the cylinder or its wall heat flux is constant. All the solutions above are presented for Reynolds numbers, Re = k ¯ a 2 / 2 υ , ranging from 0.1 to 1000, low Mach number, selected values of compressibility factor, and different values of Prandtl numbers where a is cylinder...

.... 18 02 2013 10 07 2013 An efficient and accurate approach for heat transfer evaluation on curved boundaries is proposed in the thermal lattice Boltzmann equation (TLBE) method. The boundary heat fluxes in the discrete velocity directions of the TLBE model are obtained using the given...

... as benchmark cases for other methods, whether analytic, approximate, or numerical. slip flow heat flux triangular rectangular H1 Slip flow, where the no-slip condition on solid surfaces is partially relaxed, occurs in a wide variety of situations including rarefied gas flow in microchannels...

... flowrate and wall heat flux in microchannels are studied parametrically. In order to examine the aspect ratio effect on heat and mass transfer behaviors, the wall temperature is set constant at 350 K and the aspect ratio of the microchannel varies from 5 to 20. The results show that as the aspect ratio...

...A. R. Noori; M. Rashidi The objective of this study is the thermal investigation of a typical spark-ignition (SI) engine combustion chamber with particular focus in determination of the locations where the heat flux and heat transfer coefficient are highest. This subject is an important key...

...Gopinath R. Warrier; Vijay K. Dhir In this paper we provide a review of heat transfer and wall heat flux partitioning models/correlations applicable to subcooled forced flow nucleate boiling. Details of both empirical and mechanistic models that have been proposed in the literature are provided...

...Nilanjana Basu; Gopinath R. Warrier; Vijay K. Dhir A mechanistic model for wall heat flux partitioning during subcooled flow boiling proposed in Part I of this two-part paper, is validated in this part. As the first step of the validation process, the developed model was applied to experimental...

...Nilanjana Basu; Gopinath R. Warrier; Vijay K. Dhir In this work a mechanistic model has been developed for the wall heat flux partitioning during subcooled flow boiling. The premise of the proposed model is that the entire energy from the wall is first transferred to the superheated liquid layer...

..., the only impact that the transition to chaos causes on the predicted results in terms of the averaged heat flux is a minor loss of accuracy. Therefore, the predictability of the results in the sense of the averaged heat flux is not significantly affected by the transition from steady to weak-turbulent...