_m^p$$

    At the outer boundary of Material B, the temperature is determined by the
    following equation:
	$$ T_m^{p+1} = 2*Fo_B*(T_{m+1}^p + Bi_B *T_{outer}) + (1 - 2*Fo_B - 2*Bi_B * Fo_B)*T_m^p$$
    The final parameters determined by this block is the average temperatures,
    which are determined by the following equation:

    $$Tavg_A = \frac{\sum(Tfvec * Nw_A)}{\sum Nw_A}$$
    $$Tavg_B = \frac{\sum(Tfvec * Nw_B)}{\sum Nw_B}$$

    In the above equations, each Node Width<i>Nw</i> variable is the 