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Since the higher function and miniaturized electronic devices need to consume more energy, the heat flux of local area in device will be more than 1000 w/cm2 to cause the concern of heat transfer. This paper studied the heat transfer of air-water two-phase flow in microgap with non-boiling conditions. When the flow rate of DI water was fixed (32∼196 ml/min), Nusselt number increased higher with the...
A novel approach of non-contact fluid dispensing has been proposed based on the principle of gas-liquid two-phase flow. For the direct driving principle, the slug flow pattern can be obtained stably in the micro-channel as the flip ratio between the liquid and gas is in an appropriate range. The slug flow has a special characteristic that is the liquid droplets have been separated by the air bubbles...
This paper presented a novel approach based on the two-phase flow dynamics to dispense the liquid with a high consistency and accuracy. The new technology adopted the direct driving principle to induce the stable pattern of slug flow formation separating the bubble and droplet uniformly and individually in the micro-channel. In the experiments, the gas and liquid streams entered the mixing chamber...
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