Particle Image Velocimetry and Thermometry in Freezing Water
نویسندگان
چکیده
A new experimental technique based on computational analysis of the colour and displacement of thermochromic liquid crystal tracers is applied to determine both the temperature and velocity fields of natural convection in freezing water. It combines Particle Image Thermometry and Particle Image Velocimetry. Full 2-D temperature and velocity fields are determined from two or more colour images taken for the selected cross-section of the flow.
منابع مشابه
Measurement of Temperature and Velocity Fields of Freezing Water using Liquid Crystal Tracers
A new experimental technique based on a computational analysis of the colour and displacement of thermochromic liquid crystal tracers was applied to determine both the temperature and velocity elds of freezing water. The technique combines Digital Particle Image Thermometry and Digital Particle Image Velocimetry. Full 2-D temperature and velocity elds are determined from a pair or a longer sequ...
متن کاملSelected laboratory benchmarks for validating numerical simulation of casting problems
The complicated physical phenomena which occur within solidifying metals during casting processes can not be easily observed. In the present paper the results of laboratory experiments with mould filling and freezing are presented. The experimental benchmarks have been constructed, based on so called analog fluids which are transparent and have well known physical properties: succinonitrile, po...
متن کاملSynchronized High-Speed Video, Infrared Thermometry, and Particle Image Velocimetry Data for Validation of Interface-Tracking Simulations of Nucleate Boiling
Nucleation, growth and detachment of steam bubbles during nucleate boiling of a water pool at atmospheric pressure is experimentally investigated using a combination of synchronized high-speed video (HSV), infrared (IR) thermography and particle image velocimetry (PIV). The heater is a thin (<1 m), horizontal (20×10 mm 2 ), resistively-heated, indium-tin-oxide (ITO) film, vacuum-deposited on a...
متن کامل1 Two - Color Particle Tracking Velocimetry and Thermometry
Particle Tracking Velocimetry (PTV) and Particle Image Velocimetry (PIV) originally have been established for velocity field visualization. In the meantime flow fields of interest in classical and applied fluid mechanics are essentially inseparable from thermal effects in the majority of cases. Different physical phenomena are involving for temperature field mapping depending on physical proper...
متن کامل1 Micron - Resolution Particle Image Velocimetry
During the past five years, significant progress has been made in the development and application of micron-resolution Particle Image Velocimetry (μPIV). Developments of the technique have extended typical spatial resolutions of PIV from order 1-mm to order 1-μm. These advancements have been obtained as a result of novel improvements in instrument hardware and post processing software. Theory d...
متن کامل