A combustor capable of generating multi-scale controllable turbulence

Abstract

The invention discloses a turbulence combustor capable of generating multi-scale controllable flow field . The combustor comprises a fuel air supply and mixing device and a multi-layer pore plate device for generating a multi-scale controllable flow field. A vertical arrangement form is adopted in the whole device, air and fuel enter through the air inlet pipe when the device works, the collisionplates and the sintered metal porous material can be fully premixed, and meanwhile tempering is prevented, then the premixed gas forms a controllable flow field through a turbulence generating pore plate, and finally a premixed turbulent flame with a stable controllable flow field is formed at an outlet ignition. The turbulence generating pore plate of the device adopts four-layer design, and single-layer or multi-layer pore plate combinations can be designed according to actual requirements, so that needed different strength and scale turbulence fields are generated, the device has the advantages that an excellent turbulence control effect can be achieved, the structure is compact, the processing is convenient, and the working is safe and reliable.

Description

technical field [0001] The invention relates to an experimental turbulent burner with controllable flow field, in particular to a burner capable of producing multi-scale controllable turbulent flow. Background technique [0002] Turbulent combustion is the core process of energy conversion in various industrial burners, and controllable turbulent combustion has always been a key issue in engine technology. The interaction between turbulence and combustion can determine the structure and distribution of the flame, and then affect the phenomenon of tempering, blowing out, partial flameout, and re-ignition, thus determining the combustion organization effect and performance of the engine. Therefore, it is very important to study the interaction mechanism of turbulence and flame, which can help understand and realize controllable, stable, clean and efficient combustion to a certain extent. [0003] At present, experimental research on the influence of controllable turbulence in...

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Problems solved by technology

[0003] At present, experimental research on the influence of controllable turbulence intensity and turbulence scale on turbulent combustion velocity and flame surface structure is very scarce and inconsistent with each other, which cannot support the research on the mechanism of turbulence and flame interaction and the verification and development of turbulent combustion models.

The study found that the experimental results of premixed turbulent combustion strongly depend on the geometric structure of the burner, resulting in inconsistent experimental results obtained by different structures of the burner

In addition, due to the mutual influence and restriction of turbulence intensity and scale parameters, precise control variables are difficult to achieve

Therefore, the experimental research on turbulent combustion that is goal-oriented and can realize control variables is far more difficult to realize than calculation, resulting in the lack of relevant experimental data, and it is difficult to support theoretical development and model verification.

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