This paper revisited some wheel–workpiece interaction problems in surface grinding including the profile of heat flux and the variation of the wheel’s elastic modulus. A method of using an optical microscope and a CCD camera was applied to capture the depth and width of the heated zone, the details of the temperature field and the stability of the heat flux. It was found that the heat flux in u...

The subjects of heat transfer and cooling system are very important topics in the Internal Combustion Engines (ICE). In modern cooling systems, low weight, small size and high compactness are the critical designing criteria that requires heat transfer enhancement. Boiling phenomenon which is occurred in the water jacket of the ICE is one of the methods to increase heat transfer in the coolant s...

To improve the critical heat flux (CHF) in boiling transfer, an idea of triggering three-dimensional mixed was proposed, and corresponding surface with extended thin film (ETFS) designed by adding a structure on plain (PS). With ethanol as working fluid, experiments were conducted to explore transfer CHF enhancement mechanisms ETFS. The results demonstrate that ETFS induces spatially uneven tem...

Image-based deep learning (DL) models are employed to enable the detection of critical heat flux (CHF) based on pool boiling experimental images. Most machine approaches for date focus a single dataset under certain heater surface, working fluid, and operating conditions. For new datasets collected different conditions, significant effort in re-training model or developing is required assumptio...

Heat transfer of supercritical carbon dioxide cooled in circular tubes was investigated experimentally. The effect of mass flux, pressure, and heat flux on the heat transfer coefficient and pressure drop was measured for four horizontal cooling tubes with different inner diameters ranging from 1 to 6 mm. The radial distribution of the thermophysical properties (i.e. specific heat, density, ther...