Numerical simulation of thermal counterflow in superfluid helium: converging/diverging, hyperbolic/elliptical, and forward/backward steps channels

Key Points

• Thermal counterflow behaviors change across varied channel shapes, influencing flow dynamics significantly.
• Key evidence shows different flow patterns for converging and diverging channels in superfluid helium experiments.
• Analysis includes numerical simulation techniques to observe hyperbolic and elliptical step effects in flow patterns.
• Findings highlight the complexities of superfluid dynamics, necessitating further exploration in diverse channel geometries.