Energy conservation is very important for resource conservation as well as anti-global warming. A fair wind way of 4 lanes with a cross sectional area of 154m² and two tunnels, each 5 km long, are proposed and studied for road running energy conservation at a traffic flow of 3, 000 veh. /h and a large motor mixing ratio of 20%. Results show that the piston action effect of running cars may produce fair wind of approximately 7 to 9m/s, resulting in energy savings of 33% to 38% (a power consumption reduction of 2, 900 to 3, 300kW) compared with a 10 km conventional open high way.

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We attempted a direct energy injection to a higher flow mode of Taylor-Couette flow directly by using modulated rotating speed of an inner cylinder. Targeting mode is wavy vortex flow (WVF) and then a characteristic frequency of WVF is set to a base frequency of the modulated rotation. Ultrasonic velocity profiler (UVP) measured an instantaneous velocity profile of the flow under the modulated rotation, and influence of the modulation in the flow was investigated. As the results, this method cannot realize a direct energy injection, and energy of WVF is reduced by the modulated rotation. The modulated rotation concentrates energy of WVF on the center frequency of WVF. It has a limit to the concentration and if an energy concentration goes beyond the limit, the energy of WVF decreases.

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A can of refreshing drink which contains a certain amount of drink stands at an inclined angle of 46°to 53°on a horizontal table, because the can has deep draw into a cylinder with bottom and thus has two supporting points. The can fell down on the floor when it is either filled up or empty. In this paper, a stable analysis was carried out on a can which contained the same amount of drink which stands slanting on a horizontal floor. The actual shape of the can is complex, so the can is modeled to a simple shape of a finite circular cylinder. The diameter d, height h and weight m of a can are given and the inclined angle j and the height of the center of gravity of the can h_G are also given. The conditional equation of the slanting standing of the can and the minimum and maximum amount of drink, V_min and V_max are obtained, these are described by the above variables. The results of the analysis for various can agree well with those of experimental values.

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It is known experimentally that capillary oscillations of a sessile drop cause efficient mixing inside these drop. In this paper we investigate the mixing phenomena theoretically. We determine the dispersion relation of eigen oscillations of a sessile drop (a hemisphere). Particle trajectories and density of makers associated with these oscillations are computed numerically. It is found that an efficient mixing occurs only when more than two modes are combined.

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