Department of Mechanical Engineering, IIT Bombay, Mumbai
Pulsating Heat Pipes (PHP) are gaining popularity due to advantages over conventional heat pipes. A conventional multi-control volume model for PHP is used by accommodating the effect of the equation of states (EOS) and surface tension force. The computational results are presented for a time of 1 s using a time step of 2 μs. Results are presented in terms of wall temperature, fluid temperature, mass exchange in vapour bubbles, and film thickness. Results show higher wall temperature, higher evaporation mass, and thicker film with the introduction of surface tension force. However, there are no variations observed in boiling mass due to surface tension. Variations in these results are also shown with changes in the equation of state. Two equations of states i.e. Ideal gas and Redlich–Kwong–Soave (RKS) are used. Higher wall temperature, higher evaporation mass, boiling mass, and thicker film were observed in the case of vapour bubbles using the RKS equation of state.
Cryogenic pulsating heat pipe, Transport equation modelling, Multi control volume model
