| Atomization technology plays an important role in many fields,and its application scope will be further expanded in the future.The core component of atomization is the atomization core.Its temperature field and nearby flow field will directly affect the atomization efficiency,atomization products,and atomization safety.The porous ceramic atomization core has a small structure size,is difficult to fix,and has a complex atomization process.Therefore,its temperature field and nearby flow field are difficult to study.In this paper,the simulation model of the temperature field and nearby flow field of an electrothermal porous ceramic atomization core is established,and the temperature field experimental device and the flow field experimental device are built to verify the temperature field and flow field simulation model.The effects of electric current,inspiratory airflow,and the quality of the e-liquid on the temperature field of the atomization core and the effects of the structure of the flow channel,electric current,and inspiratory airflow on the flow field near the atomization core are studied.Under different working conditions,the characteristics and variation of the temperature field and the nearby flow field of the atomization core are studied and analyzed.The details are as follows:(1)Establish the simulation model of the temperature field of an electrothermal porous ceramic atomization core,simulate the temperature field of the atomization core heated to thermal equilibrium state,study the temperature distribution characteristics of the side and bottom of the atomization core,carry out the temperature field experiment of atomization core,and verify the simulation model of steady-state temperature field of atomization core.(2)Establish the simulation model of the flow field near the porous ceramic atomization core placed in two different structural pipes,and obtain the streamline distribution and velocity distribution of the flow field in the pipe under inspiratory airflow with different volume flow.Measure the flow velocity at the characteristic position in the flow channel and verify the simulation model of the flow field near the atomization core.(3)Set up an experimental device for measuring the temperature field of a porous ceramic atomization core.Measure and obtain the steady-state temperature field of the atomization core without e-liquid when electrified without air flow,the dynamic temperature field of the atomizing core without e-liquid when electrified with air flow,and the dynamic temperature field of the atomizing core with a certain quality of e-liquid when electrified with air flow.Study the temperature distribution and changes on the surface of the atomization core under different working conditions.(4)Set up an experimental device for measuring the velocity of the flow field near the atomization core.Measure and obtain the wind speed at the characteristic position in the flow field near the atomization core when the core is electrified or unelectrified with air flow.Study the influence of the change in the structure of the airflow channel on the wind speed at the characteristic position under the same electric current and volume flow,and the influence of the change of electric current and volume flow on the wind speed at the characteristic position in the same airflow channel.Combine with simulation and experimental methods to study the temperature field and nearby flow field of a porous ceramic atomization core,and investigate the key factors affecting the atomization core’s temperature field and nearby flow field,in order to provide theoretical support and engineering application for atomization core research. |
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