Comparative analysis of single and multiphase numerical frameworks for subcooled boiling flow in an internal combustion engine coolant jacket

Computational analysis of nucleate boiling occurring in liquid cooled applications, such as internal combustion engines is often implemented within a single phase Fluid Dynamics (CFD) framework, owing to low vapor fractions involved. With increase specific power and the resulting higher thermal loads, accounting for presence using multiphase framework required certain conditions, despite computational costs. While detailed resolution phases two fluid model excessively computationally expensive, homogeneous mixture good compromise between cost. In this article numerical wall both, frameworks. Results from approaches are compared with measurements channel flow. The results both agreement experiments. approximation valid when generation low. sensitivity grid also discussed detail. Further frameworks used simulate heat transfer coolant jacket four-cylinder petrol engine. simulations measurements. Both compare reasonably well terms local metal temperature. However, advantage evident parameter related bubble interactions analysed • Blended Boiling Model CFD. Numerical validated relevant experimental data literature. more accurate net generation. Excessive refinement leads inaccurate Heat passenger car engine test data.