An investigation of the effect of an asymmetric electric field on the enhancement of heat transfer and the electrohydrodynamic (EHD)-induced flow strength in a double-wall-heated channel is numerically studied by the Q criterion. A set of case studies are carried out for a double-wall-heated channel model to analyze the influence of the key contributing EHD parameters; Reynolds number and the configuration of wires, on the Q criterion and the heat transfer characteristics as well. A descriptive factor of enhancement: the ratio of the mean Nusselt number resulted from electrohydrodynamic to the mean Nusselt number without electrohydrodynamic, is implemented to estimate the heat transfer enhancement capability. It is shown that the enhancement of heat transfer is sensitive to the wire configuration. Also, the results show that the heat transfer augmentation is more affected by the asymmetric electric field and the intensity of the Q criterion in the recirculation zones in the vicinity of wires than the symmetric electric field. Furthermore, the results indicate that the enhancement factor grows at lower Reynolds numbers. It has been seen that setting wire 1 closer to the walls results in better heat transfer enhancement.

通过 Q 准则数值研究了非对称电场对双壁加热通道中传热增强和电流体动力学 (EHD) 诱导流动强度的影响。对双壁加热通道模型进行了一组案例研究，以分析关键影响 EHD 参数的影响；雷诺数和导线配置，以及 Q 准则和传热特性。增强的描述性因素：由电流体动力学产生的平均努塞尔数与没有电流体动力学的平均努塞尔数之比，用于估计传热增强能力。结果表明，传热的增强对导线配置很敏感。还，结果表明，与对称电场相比，非对称电场和导线附近再循环区Q准则强度对传热增强的影响更大。此外，结果表明增强因子在较低的雷诺数下增长。已经看到，将金属丝 1 设置得更靠近壁会导致更好的传热增强。