Research in multi-phase flow and heat transfer

拟议的研究与电力和金属加工工业中的一些实际应用有关，这些工业中遇到了液体和蒸汽的同时流动，例如热交换器，制冷设备和发电厂。拟议的研究计划涉及开发方法，并了解潜在的物理，用于设计和评估涉及传热和流体流动的工程设备的性能。有三个特别的问题值得关注。第一种涉及金属加工业中热表面的冷却。这是通过将冷液体射流撞击热表面来实现的。设计了一种实验装置，用于进行一系列实验，旨在获得支持这种冷却系统的设计和性能优化的结果。第二个项目涉及预测工业系统的性能，其中液体和气体在大管道中同时流动。研究结果对电厂大型工程系统性能和安全性的准确预测具有重要意义。第三个项目是关于提高换热设备的有效性。通过对管道中流动的流体施加高压-低电流电场，产生额外的流体运动，导致流体混合，从而提高传热速率。增加传热速率允许为各种应用开发更紧凑的热交换设备。拟议的研究计划的一个重要方面是培养高素质的人才。我们预计通过该计划将培养8名研究生和3名博士后。

The proposed research is related a number of practical applications in the power and metal processing industries where the simultaneous flow of liquid and vapour is encountered, e.g. heat exchangers, refrigeration equipment and power plants. The proposed research program is concerned with developing methodologies, and understanding the underlying physics, for designing and evaluating the performance of engineering equipment involving heat transfer and fluid flow.Three particular problems are of interest. The first involves the cooling of hot surfaces in the metal processing industry. This is achieved by impinging cold liquid jets on the hot surface. An experimental apparatus is designed to carry out a range of experiments aimed at obtaining results in support the design and performance optimization of such a cooling system. The second project involves predicting the performance of industrial systems where liquid and gas flow simultaneously in large pipes. The results are relevant to the accurate prediction of the performance and safety of large-scale engineering systems encountered in power plants. The third project is concerned with increasing the effectiveness of heat exchange equipment. By applying high voltage-low current electric field to a fluid flowing in a conduit, additional fluid motion is created causing fluid mixing and as such increasing the heat transfer rate. Increasing the heat transfer rate allows the development of more compact heat exchange equipment for a variety of applications.An important aspect of the proposed research program is the training of highly qualified personnel. We expect eight graduate students and three postdoctoral fellows to be trained through the proposed program.