Convective heat transfer is a major phenomenon in different technical and natural systems. This process can be found in enclosures under the different temperature distributions at bounded walls. In this research, the thermogravitation energy transport of a non-constant viscosity medium inside a 3D region under the non-uniform or uniform temperature profile at one of the vertical walls is addressed. The opposite border is at a low constant temperature, and the remaining borders are well insulated. The control equations with the border restrictions are reduced into a non-dimensional form and then integrated by the finite difference procedures. The control characteristics are the Rayleigh number and viscosity changeable magnitude. The impacts of these characteristics on the energy transference and flow structures are studied.

对流换热是在不同的技术和自然系统的一大现象。本工序可与外壳在有界壁的不同温度分布下找到。在这项研究中，在垂直壁中的一个之下的非均匀或均匀的温度分布的三维区域内的非恒定的粘度介质的thermogravitation能量传输进行寻址。相反边界是在低温恒温，并且剩余的边界是公绝缘。与边界限制的控制方程被还原成无量纲的形式，然后通过有限差分程序集成。的控制特性是使瑞利数和粘度变化的幅度。对能量转移和流动结构这些特性的影响进行了研究。