Simulation of pool boiling for surfaces with various wettability

A boiling model, specifically the Rensselaer Polytechnic Institute (RPI) model, is utilized by Computational Fluid Dynamics (CFD) code to calculate the pool boiling behavior on surfaces with varying wettability characteristics. The RPI model is an accurate method for predicting the heat transfer coefficient of nucleate boiling, which is based on a component-by-component heat flux analysis. With some modifications, the RPI model can also be employed to simulate pool boiling heat transfer and CHF. To validate the modeling approach, the calculated heat flux for the pool boiling regime is compared to experimental data from the literature. The results indicate that the modified RPI model has a good ability to accurately predict the heat flux for the pool boiling stage. Furthermore, this modified RPI model demonstrates close agreement with the experimental results obtained for surfaces exhibiting diverse wettability properties. This suggests the model's capability to effectively capture the impact of surface wettability on pool boiling heat transfer. The successful application and validation of the modified RPI model for pool boiling simulations, particularly its ability to account for varying surface wettability characteristics, represents a valuable contribution to the existing knowledge on computational modeling of boiling heat transfer phenomena.

کلیدواژه ها:

RPI model ، Pool Boiling ، wettability characteristics ، boiling heat transfer ، CHF