王德能教授（Wong Teck Neng,email@example.com），南洋理工大学机械与宇航工程学院教授（School of Mechanical and Aerospace Engineering,Nanyang Technological University），国际知名多相流与传热技术研究专家。
Wong教授的主要研究领域为两相流与传热，微通道内多相流，微流装置内的多流体电渗流等，承担了国防科学国家实验室、国防部、教育部、新加坡科学院等部门立项的多项课题研究，在International Journal of Heat and Mass Transfer, International Journal of Refrigeration, Microfluidics and Nanofluidics, Chemical Engineering Science等期刊上发表论文96篇，专利2项。
1. Continuous and droplets-based Microfluidics
Microfluidics refers to the science of designing, fabricating and formulating devices and processes that manipulate the fluid flows with a length scale in the order of hundreds of microns. As the geometry changes from macroscale to microscale, the volume to surface area ratio increases dramatically. Many considerations have to be made because the factors not affecting the fluid on the macroscale has become increasingly important in influencing the characteristic and the mechanism in microscale. These include the surface tension and electric double layer. This presentation covers two aspect of multiphase flow in microfluidics: (a) Continuous multiple flow streams, (b) Droplets-based microfluidics
(a) Continuous mutiphase micro-fluidics:
The interfaces between the multiple flow streams are often known as the Laminar Fluid Diffusion Interfaces (LFDI). In this presentation, we propose theoretical models to predict the interface position of two-liquid flowing through a rectangular cross section microchannel. In experiment, we will show that by adjusting the applied electric field of the conducting liquid, the interface position can be precisely controlled.
Droplets- based micro-fluidics:
(b) The flow characterize the droplet formation, the concept of manipulation of droplets splitting, sorting and mixing will be discussed. Some results on the CFD simulation will be presented.
2.Experimental and Theoretical Studies of Spray Cooling for High Power Electronics
Spraycooling as a promising thermal management scheme has received much attention from modern industrial and technological applications, such as power electronics, nuclear power generation and high-power conversion systems. This presentation focuses on the experimental and theoretical investigations of spray cooling and its applications to high power electronics.
Fundamentalstudies of the spray characteristics and spray structures of pressure swirl nozzles in free spray atomisation and in spray cooling were carried out using Phase Doppler anemometry (PDA). The experiments show that the spray characteristics and spray structure varies as the axial distance increases. A strong thermal effect on the spray of pressure swirl nozzle was observed in the spray cooling process.Heat transfer experiment was performed to analyse the effects of spray characteristics on the heat transfer performance. Theoretical models are developed to investigate the heat transfer in the non-boiling and boiling regimes of spray cooling based on the obtained spray characteristics.
The experimental results show a promising prospect of using multi-nozzle arrays on large area power electronics cooling. Furthermore, the effects of differently scaled structure surfaces on the spray cooling performance are investigated on a small surface with high heat fluxes in a closed-loop system