In the present study, an unlooped pulating heat pipe has been considered with two liquid slugs and three neighboirng vapor plugs.The governing equations such as momentum, energy and mass equations are solved explicitly except the energy equation of liquid slugs.The aim of the present study is to calculate the entropy generation through the performance of a pulsating heat pipe. Additionally, the...

The structure and inclination angle of a pulsating heat pipe are critical factors influencing the transfer performance operation mode. In this work, single-layer double-row is designed, start-up characteristics at limit angles (0?, 90?, 180?) experimentally investigated. Also, mode studied through infrared imager temperature profiles. study highlighted that has excellent in angle. When 0?, impr...

The effect of the design on heat transfer is numerically investigated by using wavy inner tube in a double-pipe exchanger. A was used to give turbulent fluid along double In numerical study, ANSYS 12.0 Fluent code program used, and basic protection equations were solved for steady-state, 3-D flow conditions. study examined at Reynolds numbers ranging from 2700-5300. obtained results compared wi...