Numerical Analysis of A New Thermosyphon Heat Pipe

In this study, an experimental and 3-dimensional numerical analysis of a thermosiphon heat pipe (THP) using two-phase fluid cycling was performed to model the heat transfer process by evaporation and condensation. R404A refrigerant was chosen as the working fluid for the THP and 50% of the evaporator section was filled with the working fluid. Numerical analysis was performed using ANSYS FLUENT program and VOF method. In the meantime, in order to model the evaporation and condensation process successfully, a UDF code written in C was used and introduced to the fluent program. As a result of the study, it was seen that the temperature values obtained from the experimental and numerical analysis for the evaporator and condenser parts of the THP were in good agreement. As a result of the numerical analyzes carried out in 3D, the contours of the evaporation and condensation process and the heat transfer process are presented visually. The analysis took a total of 200 seconds