A 3D volume of fluid (VOF) model fo

A 3D volume of fluid (VOF) model for an anode channel in a PEM fuel cell has been built. The effects of the initial position of the water droplet, its size as well as the wettability of the gas diffusion layer (GDL) are investigated under different operating conditions. It is found that the initial position of the relatively small water droplet in the channel has almost no effect on the pressure drop and the time taken for the liquid water to move out from the channel; however, such effects become more profound as the size of the water droplet increases. Also, when the droplet is placed at the side wall of the channel, then itdevelops into pockets of water that are mainly located at the upper corners of the channel, thus causing a smaller pressure drop compared to the cases in which the water droplet is placed either on the surface of the GDL or on the top wall of the channel. Furthermore, the hydrogen velocity is found to have a negligible effect on the dynamics of liquid water; however, the pressure drop and removal time are significantly influenced by the hydrogen velocity. Moreover, as the size of the water droplet increases, the pressure drop increases and the time required for the liquid water to move out of the channel decreases.Finally, the pressure drop in the channel decreases and the removal time of the liquid water increases as the contact angle of the GDL decreases.

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结果 (简体中文) 1: [复制]

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已为PEM燃料电池中的阳极通道建立了3D体积流体（VOF）模型。在不同的操作条件下，研究了水滴的初始位置，水滴的大小以及气体扩散层（GDL）的润湿性的影响。可以发现，相对较小的水滴在通道中的初始位置几乎对压降和液态水从通道中移出所花费的时间没有影响。然而，随着水滴尺寸的增加，这种影响变得更加深刻。同样，当液滴被放置在通道的侧壁时， 水滴会发展成主要位于通道上角的水囊，因此与水滴放置在GDL表面或通道顶壁上的情况相比，压力下降较小。此外，发现氢速度对液态水动力学的影响可忽略不计；但是，氢气的流速会显着影响压降和去除时间。此外，随着水滴尺寸的增加，压降增加并且液态水从通道中移出所需的时间减少。 最终，随着GDL的接触角减小，通道中的压降减小并且液态水的去除时间增加。

正在翻译中..

结果 (简体中文) 2:[复制]

复制成功！

A 3D volume of fluid (VOF) model for an anode channel in a PEM fuel cell has been built. The effects of the initial position of the water droplet, its size as well as the wettability of the gas diffusion layer (GDL) are investigated under different operating conditions. It is found that the initial position of the relatively small water droplet in the channel has almost no effect on the pressure drop and the time taken for the liquid water to move out from the channel; however, such effects become more profound as the size of the water droplet increases. Also, when the droplet is placed at the side wall of the channel, then it develops into pockets of water that are mainly located at the upper corners of the channel, thus causing a smaller pressure drop compared to the cases in which the water droplet is placed either on the surface of the GDL or on the top wall of the channel. Furthermore, the hydrogen velocity is found to have a negligible effect on the dynamics of liquid water; however, the pressure drop and removal time are significantly influenced by the hydrogen velocity. Moreover, as the size of the water droplet increases, the pressure drop increases and the time required for the liquid water to move out of the channel decreases. Finally, the pressure drop in the channel decreases and the removal time of the liquid water increases as the contact angle of the GDL decreases.

正在翻译中..

结果 (简体中文) 3:[复制]

复制成功！

建立了质子交换膜燃料电池阳极通道的三维流体体积模型。研究了不同操作条件下，液滴初始位置、液滴尺寸以及气体扩散层（GDL）润湿性的影响。研究发现，相对较小的水滴在通道中的初始位置对压降和液态水从通道中流出所需的时间几乎没有影响，但随着水滴尺寸的增大，这种影响变得更为深刻。此外，当液滴被放置在通道的侧壁上时，它会 形成主要位于通道上角的水袋，因此与水滴放置在GDL表面或通道顶壁上的情况相比，压降较小。此外，氢速对液态水动力学的影响可以忽略不计，但氢速对压降和去除时间有显著影响。此外，随着水滴尺寸的增大，压降增大，液态水移出通道所需的时间减少。 最后，随着GDL接触角的减小，通道内的压降减小，液态水的去除时间增加。

正在翻译中..

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