【摘要】 本文主要研究了直流电场对冷态注入氮气气泡和R113沸腾气泡行为的影响。利用高速摄像机拍摄了冷态注入气泡和热态沸腾气泡在不同场强作用下的实验图像,并对气泡的脱离进行了定量分析。实验结果表明:注入氮气气泡和沸腾气泡沿电场方向显著伸长,其脱离长径比随着场强升高而增大,并且电场对沸腾气泡伸长行为的影响更显著。此外,注入气泡和沸腾气泡的脱离体积随着场强增大都具有减小的趋势,而且注入气泡体积随场强减小的行为更明显。更多还原

【Abstract】 The deformation behaviors of injected nitrogen bubbles and R113 boiling bubbles were investigated in a DC electric field.The bubble images in various electric fields were obtained by a high speed camera,and the bubble dynamics at departure were quantitatively analyzed.The results showed that the injected and boiling bubbles distinctly elongated along the electric field direction.The bubble aspect ratio increased with the electric field intensity,and the elongation of boiling bubble is larger.As the electric field intensity is raised,the departure volumes of injected and boiling bubbles decrease,and the volume of the injected bubble decreases more significantly.更多还原