Study On DPIV Technique In Experimental Tests Of High-pressure Water Jet

DPIV technology is a modern fluid mechanics research in the field of application of image processing technology, is a traditional digital image velocimetry PIV technology of digital methods, this technology is also a flow visualization test one of the important trends.High-pressure water jet technology is a new technology, the rapid development of social productive forces in today's environment, technology advances so many new materials came into being, for example, high heat resistance fiber materials, high-density composite material And the thermal material and so on. The cutting of these materials, the use of traditional cutting techniques previously very difficult to achieve with the technology, so that the cold high pressure water jet cutting technology technology came into being.This thesis focus on how to use this new technology DPIV and the combination of high pressure water jet technology to carry out the relevant tests for products related to the water jet to lay a theoretical foundation.First, according to high-pressure water jet theoretical knowledge of the basic design of a reasonable set of experiments generating device that is abrasive water jet cutting device, including piston pump stations, the occurrence of abrasive water jet device, the nozzle and the working bodies of four parts.Secondly, according to its design generating device design experiments needed to optical systems and dynamic imaging systems, and finally, the use of full set of device-related experiments, data and image, and then using VC++ written image processing software as well as some mathematical methods to identify, Processing parameters used to convert the data and to analyze the law.Throughout the text, the paper on the water jet and abrasive jet images and various parameters in detail, the results show that the use of design some of the water jet cutting device efficiency and accuracy and these parameters are inextricably linked, This will improve the performance of devices provides a theoretical basis for reference. Figure [32] Table [6] Reference [57]...