Throughout history, flow visualization has been an important tool in fluid dynamics research. It has been used extensively in the fields of engineering, physics, medical science, meteorology, oceanography and sport aerodynamics, to name just a few. The importance of flow visualization led Professor F N M Brown (1971) of the University of Notre-Dame to comment, ?? A man is not a dog to smell out each individual track, he is a man to see, and seeing, to analyze?? This statement encapsulates the importance of first visualizing the flow before proceeding with detailed measurement and mathematical modeling. In addition, there is a great deal of esthetic pleasure to be gained from seeing the results of flow visualization. This aspect of flow visualization reaches out to the general public: we are all familiar with the aspect of clouds in the sky, the trail of cigarette smoke, and the swirling patterns to be seen in rivers and seas.Unlike previous publications which concentrated mainly on the theoretical aspect of flow visualization, this book focuses on the techniques required to perform high quality flow visualization. It is aimed primarily at the practitioner of flow visualization studies. Obtaining good flow visualization results is, in many ways, more an art than a science, and experience plays a deciding role. Hence each chapter of this invaluable volume has been written by an expert in a particular technique.

About - EHD Experiments at the Ghosh Lab

Electrohydrodynamic (EHD) Drying is an upcoming drying technique for food and bio-materials. One of the major driving mechanisms of EHD drying is the electric wind, which is generated in the presence of a non-uniform electric field. This non-uniform electric field is generated when high voltage is applied across two electrodes having different radii of curvature. In these experiments, we will explore the fascinating phenomenon of discharges in gases, which constitutes an entire unexplored universe in itself. TASK - 1: The first task is advanced literature review, which will be based on getting the information which can give maximum benefits with minimum efforts, existing facilities, and known calculation tools and/or techniques. TASK - 2: The second task is based on conducting basic experimentation for flow and boundary layer visualization using Schlieren and/or PIV measurements. TASK - 3: The third task is based on conducting advanced experimentation relating to characterizing the plasma composition using PLIF measurements. This will also include exploring 2D and 3D measurements for characterizing several other characteristics such as temperature profile. TASK - 4: The last task will be performed concomitantly with task-3. This task will involve the setting up of arc discharge at the inlet of hydrogen gas purging in the combustion chamber. TASK - 5: This task involves helping the BTP student in his endeavors to apply high voltage in his experimentation. Also, some fun experiments will be developed for UG students.