合成射流(Synthetic jet)是近二十年人们一直关注的主动流动控制技术,其显著特点是仅对外输出动量而不输出质量,因此又被称为零质量射流(Zero-Net-Mass-Flux-Jet)。合成射流撞击壁面可以有效降低壁面温度、提高壁面传热效率,因而有望成为一种新型的散热技术
在壁湍流的近壁区,条带和流向涡循环再生构成的自维持过程在壁湍流的产生和维持中起重要作用,采用最小流动单元的直接数值模拟可以再现这一自维持过程...
Microgravity experiments can be performed in ground-based and space-based facilities. The main purpose of the experiments is to remove much the gravity-induced phenomena such that secondary physics of the problem become experimentally tangible...
In this seminar, we will review some prior and recent work on the understanding of how oxygenated fuels affect the sooting tendency of fuel mixtures and how oxygenated fuels affect the nanostructure and oxidative reactivity of soot...
Growing acceptance of the detrimental environmental effects of fossil fuel usage of transport and power generation has added increasing urgency to the search for truly sustainable alternative fuels...
Nanobubbles challenged the scientific community twofold: they are difficult to distinguish from contamination and they - according to physics should not be existent...
We describe a statistical mechanics approach to hysteretic capillary phenomena with two examples: the retention of a liquid in a unsaturated porous medium...
In the present talk we will consider certain aspects of flame acceleration, subsonic and supersonic combustion in channels, and deflagration-to-detonation(DDT)...