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We compare the dynamic characteristics of syringe-pump-driven and pressure-driven microfluidic flows based on the experimental measurements of the step response of the inlet pressure pi. For syringe-pump-driven flows, periodic fluctuations of pi are observed experimentally, which are induced by the flow-rate fluctuations coming from the mechanical oscillations of the pump motor. For pressure-driven...
The high temperature flow-rate control valve is a key component to control the flow rate of fuel supply for scramjet engines. In this paper, a bellow-type flow rate control valve for high temperature working fuel is developed. The construction and working principle of the valve are introduced and the mathematical models of the valve are established. The dynamic characteristics of displacement are...
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