Flow displaying-measuring experimental device and method

Abstract

The invention discloses a flow displaying-measuring experimental device and method. The experimental device comprises an experimental chamber connected to a wind tunnel, the bottom of the experimental chamber is connected with a jetting plate detachably, the lower portion of the jetting plate is connected with a gas collection chamber, the gas collection chamber is communicated with the experimental chamber via a jet orifice in the jetting plate, and the bottom of the gas collection chamber is connected with a flow meter, a current stabilizing valve, a pressure stabilizing valve, a smoke device and an air compressor successively via a hose and transitional joints; and the back side of the experimental chamber is provided with a lifting platform, the lifting platform is connected with a 2D mobile slide unit, the bottom of the 2D mobile slide unit is connected with a light source device, the top of the experimental chamber is provided with a slit through which a light source can pass, the outer side of the experimental chamber is provided with a data collection device that facing the experimental chamber, and the data collection device is electrically connected with a computer. The experimental device and method are suitable for wind tunnels of different types and specifications, has little interference in the flow field, and is good in the display effect, accurate in measurement and low in cost.

Description

technical field [0001] The invention belongs to the technical field of fluid mechanics experiments, and in particular relates to an experimental device and method for flow display and measurement. Background technique [0002] Fluid experiments generally include flow display and flow measurement. The main task of the flow display experiment is to visualize the fluid flow process, while the flow measurement is mainly to obtain the quantitative information of the fluid flow process. They complement each other and are an integral part of experimental fluid mechanics. Through various flow display and measurement experiments, people can understand complex flow phenomena, explore physical mechanisms and laws of motion, and provide scientific basis for establishing new concepts and mathematical models. Flow display and measurement technology itself is also the main means to solve practical engineering problems. It can be said that in the development of fluid mechanics, every theo...

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Problems solved by technology

The flow conditions involved in the aerospace field are more complex and changeable, especially the flow inside the aero-engine. As the "crown jewel of industry", the gas outlet temperature of the aero-engine combustor is getting higher and higher. It is also more important and prominent. Air film cooling is an important cooling method, but the research on air film cooling is more focused on cooling efficiency, and using experimental methods, combined with cooling performance analysis, from the flow mechanism or air mixing Few studies have been conducted on the analysis of film cooling characteristics from the perspective of mixing mechanism

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