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In this paper, we mainly study the processing and manufacturing methods of the Koch fractal micromixer on polymethyl methacrylate (PMMA) substrate using a flexible and low-cost CO2 laser system. The structure of Koch fractal microchannel can increase the contact area of the fluids, prolong the mixing time and improve the mixing efficiency of the micromixer. The study focuses on the effect of the CO...
The exergy-based multi-disciplinary optimization (MDO) method has been applied to conceptual design of a scramjet engine by analyzing the available energy in each subsystem within a highly integrated and high efficiency required vehicle. Regarding the conceptual design of a scramjet, the stream thrust method has been adopted to calculate each subsystem’s in/out area, i.e., inlet, isolator, combustor...
This paper aims at studying on the mixing performance of micromixer with Koch fractal microchannel by numerical simulation. Setting up obstacles in the microchannel is an effective way to improve the mixing efficiency, and changing the shape of the obstacle based on the fractal principle can improve the chaotic convection in the microchannel, it can make the performance of the micromixer much better...
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