An experimental system for simulating the interaction of turbulent flame and oil film on the wall

Abstract

The invention provides an experimental system for simulating the interaction of turbulent flame and a wall surface fuel film. The system includes a constant volume combustion bomb body, two observation windows, a wet wall surface assembly, a turbulent flame generation device, an optical acquisition device, a temperature acquisition device and an electronic control device, wherein one wall surfaceof the wet wall surface assembly can form a combustion chamber with the constant volume combustion bomb body, a wall attachment fuel film can be formed on the wall surface, the turbulent flame generation device is connected to the constant volume combustion bomb body and used for generating the turbulent flame spreading to the wall attachment fuel film direction, the optical acquisition device cancollect turbulent flame combustion processes of a near-wall area through the observation windows, the temperature acquisition device is arranged on the wall surface and in the near-wall area and usedfor measuring the temperature changes of the wall surface and the near-wall area during the interaction of turbulent flame and the wall surface fuel film, and the electronic control device is in signal connection with the turbulent flame generation device, the optical acquisition device and the temperature acquisition device, and is used for controlling and harmonizing the working state of each part.

Description

technical field [0001] The disclosure relates to the technical field of engines, in particular to an experimental system for simulating the interaction between a turbulent flame and an oil film on a wall. Background technique [0002] In the material and structural design of modern new combustion power devices, the interaction between the combustion flame and the wall is a key consideration, because the flow of the wall and the combustion reaction in the near wall area have a great impact on fuel consumption, heat loss and the generation of pollutants. have an important impact. Therefore, many researchers have carried out a series of experiments and simulation studies on the process and influencing factors of the interaction between the flame and the wall surface, providing a more comprehensive theoretical basis for the development of new combustion technologies. [0003] However, in an actual engine, a layer of oil film is often attached to the wall surface of the cylinder...

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Problems solved by technology

[0004] However, in the process of implementing the present disclosure, it is found that due to the complexity of the engine working process, it is difficult to visually observe the actual in-cylinder combustion process

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