[                           ]
qxt= qs +               erf                   + erf                  +                              
(     )
r + d
2ht0.5
(     )
r - d
2ht0.5
qr - qs
2
(e-a2 - e-b2)2ht0.5
dp0.5
a =
r - d
2×h×t0.5
b =
r - d
2×h×t0.5
erf = 2p-0.50be-b2db
1x
2×h×t0.5
b =
 
t = time
qr = initial temperature of hot rock
qs = initial temperature of soil
d = distance from hot rock
r = radius of hot rock
h2 = thermal diffusivity
Variables
A theoretical model for heat flux in a pit cook
Important aspects of a pitcook
39
Temperature: ???