2) friction reduction by micro-bubble
微气泡减阻
1.
In order to study the influence of Reynolds Number and micro-bubbles volume fraction on reducing ship friction, the numerical stimulation of friction reduction by micro-bubbles is made on the two-dimension vessel by injecting bubbles from perforated plates fixed at the bow of vessel’s bilge.
为了研究来流雷诺数、微气泡浓度等因素对减少船舶摩擦阻力的影响,采用Lam-Bremhorst低雷诺拓展的K-ε模型,应用相间滑移算法,考虑了气-水两相的相间阻力、相间升力、相间压力和相间虚质量力以及气泡对湍流的作用,对二维平底型船舶,在船首底部喷射微气泡,进行了微气泡减阻的数值模拟。
3) Microbubble drag reduction
微气泡减阻
1.
Microbubble drag reduction technology is developed in recent three decades, many scholars at home and abroad have done a large number of experimental and theoretical researches on the micr-bubble drag reduction , and the good drag reduction effect has been tested for the trial.
微气泡减阻技术是近三十年发展起来的,国内外许多学者对气泡减阻进行了大量实验和理论研究,其良好的减阻效果已经为试验所检验。
2.
And then the research actualities of riblet surface drag reduction technology,microbubble drag reduction technology and hydrophobic/superhydrophobic surface drag reduction technology are expounded through experimental and theoretical researches with drag reduction mechanisms purposively emphasized.
重点介绍了脊状表面减阻、微气泡减阻和疏水/超疏水表面减阻的研究现状。
4) Experimental Study on Drag Reduction with Air Bubble
气泡减阻实验研究
5) Reducing resistance by introduction of air
气体减阻
6) gas layer reducing resistance
气膜减阻
1.
The testing platform of gas layer reducing resistance and testing process are described in detail in the paper.
为了进一步探索船底气膜减阻效果,上海船舶运输科学研究所对此展开了试验研究。
补充资料：微气泡曝气
分子式：
CAS号：
性质：气泡曝气方法之一。活性污泥法废水生物处理过程中，在曝气池底部或邻近底部设置多孔陶质扩散器进行曝气，扩散器上微孔孔径约为50μm，可产生直径0.2～0.3mm的微小气泡。操作时，输入的空气需先经过滤，以防扩散器发生堵塞。由于产生微气泡的扩散器浸没深度较大，而且扩散器微孔阻力增加，因此，所需鼓风压力较大。其充氧效率一般为10％～30％。
CAS号：
性质：气泡曝气方法之一。活性污泥法废水生物处理过程中，在曝气池底部或邻近底部设置多孔陶质扩散器进行曝气，扩散器上微孔孔径约为50μm，可产生直径0.2～0.3mm的微小气泡。操作时，输入的空气需先经过滤，以防扩散器发生堵塞。由于产生微气泡的扩散器浸没深度较大，而且扩散器微孔阻力增加，因此，所需鼓风压力较大。其充氧效率一般为10％～30％。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条