In this study, the behavior of nanoparticles using a numerical model is discussed. For this study a model for the expansion in free convection heat transfer and mix in a rectangular container with dimensions of 1 × 4 cm using Nano-aerosols in the air is going when copper nanoparticles, use and by changing the temperature difference between hot and cold wall, we will examine its impact on the ra...

The prediction of critical heat flux (CHF) phenomenon at atmospheric pressure was carried out using computational fluid dynamics (CFD) methods. Heat transfer experiments flow boiling will be validated the University West Bohemia, where an experimental apparatus is built. test section consists one 3000 mm long resistance heated fuel rod imitator (HRI) with outer diameter 9.1 placed in annular tu...

This paper presents an experimental characterization of liquid nitrogen (LN2) flow boiling in additively manufactured minichannels. There is a pressing need concerted efforts from the space exploration and thermal transport communities to design high-performance rocket engine cooling channels. A close observation literature gaps warrants systematic cryogenic asymmetrically heated small (<3 m...

There is a significant decrease in flow boiling CHF when the inertial force of fluid not large enough microgravity, but this tendency decreases with increase force. In present study, critical heat flux (CHF) subcooled at different gravity levels on smooth silicon surfaces was investigated. The working FC-72, subcooling 15 K. transfer characteristics, including CHF, wall temperatures and bubble ...

In internal combustion engines, exhaust valve and its seat gain considerable temperature as the hot gases exit through them. So, the rate of heat transfer should be under control. In this study, the contact heat transfer coefficient has been estimated. An experimental study on an Air-Cooled internal combustion engine cylinder head has been considered. Using the measured temperatures of sensors ...