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Boundary layer flow and stability analysis of forced convection over a diverging channel with variable properties of fluids

机译:具有流体变量性能的发散通道强制对流的边界层流动及稳定性分析

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The objective of the current study is to investigate the forced convection laminar boundary layer flow over a flat plate in a diverging channel with variable viscosity. The physical governing equations are converted to nondimensional partial differential equations (PDEs) using similarity transformation. The coupled PDEs with boundary constrains are solved numerically using quasilinearization technique. Computational results are given in terms of flow parameter e(0 < ε < 1), suction or injection A, and viscous dissipation parameter Ec. Stability analysis was conducted and the solutions were found to be stable for real values of γ. We found that variable Prandtl number with quasilinearization technique method gives smoothness of solution compared to fixed Prandtl number. This is shown graphically for different fluids in Section 5. Also, the significant effect of the suction/injection parameter (A) on velocity, temperature profiles, skin friction, and heat transfer is observed.
机译:目前研究的目的是研究具有可变粘度的发散通道中的平板上的强制对流层边界层。 使用相似性转换将物理控制方程转换为非跨度部分微分方程(PDE)。 使用Quasilinearization技术在数值上进行边界约束的耦合PDE。 计算结果在流量参数E(0 <ε<1),抽吸或注射A和粘性耗散参数EC方面给出。 进行稳定性分析,发现溶液稳定γ的真实值。 我们发现,与固定的Prandtl数相比,具有Quasilinearization技术方法的变量Prandtl编号使解决方案的平滑度。 这是以图5中的不同流体图形示出的。此外,观察到吸入/注射参数(a)对速度,温度谱,皮肤摩擦和传热的显着效果。

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