Heat Transfer in He II - Dimensional Scaling

本课题是对He II的圆柱热流密度进行实验和理论研究。实验将使用SQUID仔细测量被加热圆柱体附近的温度梯度。稳态和瞬态过程都将被考虑。这项工作将包括将实验结果与He II模型应用于圆柱形几何的预测结果进行比较。第二个问题将是在这个构型中寻找湍流状态的起始点。温度和加热速率的影响也将被考虑在内。本课题是超流氦传热的基础工程研究，对超导体、超级对撞机、天体磁和航空航天等领域的应用具有重要意义。

This project is an experimental and theoretical study of heat flux from circular cylinders in He II. The experiment will use a SQUID to make careful measurement of the temperature gradient in the vicinity of heated cylinders. Both steady state and transient processes will be considered. The effort will include a comparison between experimental results and those predicted from the He II model applied to cylindrical geometries. A secondary issue will be to search for the onset of the turbulent state in this configuration. The effect of both temperature and heating rate will also be considered. This project is a basic engineering study of heat transfer in superfluid helium which could be of benefit to superconductor, supercollider, astromagnetic and aerospace applications.