The approximation of a linear dependency between heat flow and temperature difference leads to satisfactory results. 在热流量与温度差之间,近似地采用线性关系,也能得出令人满意的结果。
Further qualifications require that the two fluids be miscible and that the density difference be a function of differences in temperature. 另外的条件要求两种流体可以掺混起来,并要求两种流体的密度差是温度差。