Numerical analysis of mixed characteristics of chaotic C-type geometric flows coupling electromagnetic thermal characteristics
In order to overcome the reactor performance limitations caused by the poor mixing efficiency of traditional tubular reactors and the low heat transfer rate of traditional heating methods,a tubular microwave reactor using the chaotic C-type geometric pipe was proposed.The mixing and electromagnetic thermal characteristics of fluid at low Reynolds number(Re)were simulated by COMSOL software,respectively.The results were as follows:When Re≥15,chaotic flow appeared obviously in chaotic C-type pipe,and eddy current intensity could be increased by increasing Reynolds number to promote uniform mixing;The increase of chaotic C-type period number would produce more disturbance number and constantly change the direction of fluid movement,thus improving the heat transfer performance;The electric field distribution in chaotic pipe was more complex than that in planar pipe,and the microwave energy utilization rate was higher;Based on Reynolds number and power analysis of the correlation between mixing and electromagnetic thermal characteristics,the coupling mechanism of the two was initially revealed.
microwave reactorchaosmass transferheat transfermulti-physical field simulation
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