Abo Bibliothek: Guest

ISSN Online: 2377-424X

ISBN Print: 978-1-56700-474-8

ISBN Online: 978-1-56700-473-1

International Heat Transfer Conference 16
August, 10-15, 2018, Beijing, China

NUMERICAL INVESTIGATION ON FLOW AND THERMAL CHARACTERISTICS OF PULSATING HEAT PIPES

Get access (open in a dialog) DOI: 10.1615/IHTC16.her.023835
pages 4641-4648

Abstrakt

A pulsating heat pipe (PHP, also known as oscillating heat pipe) is a two-phase heat transfer device that is getting spotlight as an alternative to a conventional heat pipe. Even though it has a simple structure, the operating mechanism is complicated due to the thermo-hydraulic coupling, therefore modeling of two phase flow in a PHP is a challenging issue. In the present study, flow and thermal characteristics of pulsating heat pipes are numerically investigated. A 1-D numerical model is presented based on the slug/plug flow assumption. Conservation of mass, momentum and energy are solved for liquid slugs, vapor plugs, liquid film and solid wall. An Eulerian approach is used and SIMPLE algorithm is applied. Results from the proposed model are compared to the experimental results of the authors' previous study. Both numerical and experimental results show the circulating flow pattern of the liquid slugs and vapor plugs in the pulsating heat pipe operating in a vertical orientation.