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首页> 外文期刊>American Journal of Applied Mathematics >Effect of internal heat generation or absorption on MHD mixed convection flow in a lid driven cavity
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Effect of internal heat generation or absorption on MHD mixed convection flow in a lid driven cavity

机译：内部生热或吸收对盖驱动腔中MHD混合对流的影响

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In the present study the problem of mixed convection flow in the presence of magnetic field in a lid-driven square cavity with internal heat generation or absorption and uniform heating of bottom wall were investigated numerically. The square cavity vertical walls are maintained at cold temperature while the upper wall is insulated. The physical problem is then expressed mathematically by a set of governing equations and the developed mathematical model is solved by employing Galerkin weighted residual method of finite element formulation. Effects of variations of Richardson number, Hartmann number and heat generation or absorption parameter on flow structure and heat transfer rate (Nuesselt number) were studied in details. The significant reduction in the average Nusselt number were produced as the strength of the applied magnetic field was increased. In addition, heat generation predicted to decrease the average Nusselt number whereas heat absorption increases it.
机译：在本研究中，数值研究了盖驱动的方腔中存在磁场，内部热量产生或吸收以及底壁均匀加热的混合对流问题。方腔垂直壁保持低温，而上壁则绝缘。然后，通过一组控制方程在数学上表达物理问题，并通过采用有限元公式化的Galerkin加权残差法来解决所开发的数学模型。详细研究了理查森数，哈特曼数和生热或吸收参数的变化对流动结构和传热速率（努塞特数）的影响。随着施加磁场强度的增加，平均努塞尔数显着降低。另外，热量的产生预计会降低平均努塞尔数，而热量吸收会使其平均升高。

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