A correlation for predicting the extent of electrohydrodynamic enhancement of natural convection from heated horizontal cylinders is presented. This correlation is supported with results from two different experiments; the first involves natural convection from a thin platinum wire immersed in R-l23 with a uniform electric field, while the second involves natural convection from a flooded tube immersed in R-l23 in a non-uniform electric field. The Nusselt number enhancement is correlated in terms of a "corrected electrical Rayleigh number", RαEl, to account for the effect of a non-uniform electric field on natural convection. The correlation is valid for the range 4.0 x l0~3 ≤ RαEl ≤ 8.0 x l0~8.
展开▼
机译：提出了一种相关性，用于预测加热的水平圆柱体自然对流的电流体动力学增强程度。这种相关性得到了两个不同实验的结果的支持。第一种涉及来自均匀电场浸没在R-123中的细铂丝的自然对流，而第二种涉及来自非均匀电场浸没于R-123中的溢流管的自然对流。 Nusselt数增强与“校正电瑞利数”RαE1相关，以说明非均匀电场对自然对流的影响。该相关性在4.0 x l0〜3≤RαEl≤8.0 x l0〜8的范围内有效。
展开▼
