Electric fields are useful for enhancing stability limits of flames, increasing the overall burning rate and reducing soot emissions. The electric body force has been known as a key element behind the aforementioned augmentation, and recent studies have provided clear picture for the resulted flow modification. In this study, we investigate the effects of pressure on an ionic wind by applying transverse electric fields to methane premixed jet flames in a pressurized chamber up to 2 atm. We investigated the voltage-current response by varying the pressure, the equivalence ratio of the mixture, and the flow rate. We found that the saturated current for lean and stoichiometric mixtures was not affected by the pressure, while the saturated current of rich premixed flames changed significantly. We developed a model to predict the voltage-current behavior and the ion-production rate, which we validated using experimental results. Based on our flow field measurements, we found that elevated pressure conditions enhanced ionic wind-driven mass transport. These results support the use of electric fields in a high-pressure environment.

电场可用于提高火焰的稳定性极限、提高整体燃烧速率和减少烟灰排放。众所周知，电体力是上述增强背后的关键因素，最近的研究为由此产生的流动修改提供了清晰的画面。在这项研究中，我们通过在压力高达 2 atm 的加压室中对甲烷预混合喷射火焰施加横向电场来研究压力对离子风的影响。我们通过改变压力、混合物的当量比和流速来研究电压-电流响应。我们发现稀薄和化学计量混合物的饱和电流不受压力的影响，而浓预混火焰的饱和电流发生了显着变化。我们开发了一个模型来预测电压-电流行为和离子产生率，我们使用实验结果对其进行了验证。基于我们的流场测量，我们发现高压条件增强了离子风驱动的质量传输。这些结果支持在高压环境中使用电场。