Abstract An unsteady force convection flow of a hybrid nanofluid flow driven in a microchannel by an applied time-dependent periodic pressure gradient in the presence of electric double layer, magnetic field, and thermal radiation effects is studied. Few attentions have been paid to investigate such pressure driven flow in micro-scale though they could be very important in practical applications. In our configuration, the Boltzmenn-Poisson's equation is employed to describe the electrostatic potential, while the reduced Navier-stokes equations based on small pressure amplitude assumption are applied to depict the conservations of momentum and thermal energy. Analytical solutions for all fields are obtained. The influences of physical parameters such as the Debye-Huckel parameter, the Hartmann number, the angular velocity, and the thermal radiation parameter on both steady and unsteady components of the velocity and temperature profiles are presented and discussed. Results show that hybrid nanofluids hold almost the same behaviours as conventional nanofluids. Therefore it is expected to replace conventional nanofluids by hybrid nanofluids for design of cheaper and higher performance heat exchangers or cooling systems and so on.

中文翻译：

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在存在 EDL、磁和热辐射效应的情况下，混合纳米流体在微通道中与不稳定脉动流的强制对流

摘要 研究了在存在双电层、磁场和热辐射效应的情况下，由外加的时间相关的周期性压力梯度驱动的混合纳米流体流在微通道中的非定常力对流流动。尽管它们在实际应用中可能非常重要，但很少有人关注在微观尺度上研究这种压力驱动的流动。在我们的配置中，Boltzmenn-Poisson 方程用于描述静电势，而基于小压力幅度假设的简化 Navier-stokes 方程用于描述动量和热能守恒。获得所有领域的解析解。Debye-Huckel 参数、Hartmann 数、角速度等物理参数的影响，提出并讨论了速度和温度分布的稳态和非稳态分量的热辐射参数。结果表明，混合纳米流体与传统纳米流体具有几乎相同的行为。因此，有望用混合纳米流体代替传统的纳米流体，以设计更便宜和更高性能的热交换器或冷却系统等。