A computational research of radiative-convective energy transport in large-scale enclosure with a heat-generating heater under normal room conditions has been conducted. The heater (underfloor heating system) is located at the bottom of the room. Employing the Boussinesq assumption, the control equations have been solved contemporaneously to receive both the velocity fields and temperature patterns. To generate the systems of linear equations using vorticity and stream function, the finite difference technique has been employed. The developed convective-radiative model has been validated through a comparison with several problems. The influence of heater size and location, internal surfaces emissivity from 0 to 1, Ostrogradsky number for a wide range from 0 to 5 on Nusselt numbers and both stream function and temperature distributions has been investigated. The results demonstrate that the influence of the thermal radiation on total heat transfer increases with surface emissivity of walls and heater surfaces.

进行了在正常室内条件下，带有发热加热器的大型机壳内辐射对流能量传输的计算研究。加热器（地板采暖系统）位于房间的底部。利用Boussinesq假设，同时求解了控制方程，以接收速度场和温度模式。为了使用涡度和流函数生成线性方程组，已采用了有限差分技术。通过与几个问题的比较，已验证了开发的对流辐射模型。加热器尺寸和位置，内表面发射率从0到1的影响 在Nusselt数上，Ostrogradsky数在0到5的宽范围内进行了研究，并研究了流量函数和温度分布。结果表明，热辐射对总传热的影响随着壁和加热器表面的表面发射率的增加而增加。