Chapter 8 - Soil Temperature - LAWR

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SSC 107, Fall 2001 – Chapter 8 Page 8-8 In all problems, assume X o =0 if not specified.
SSC 107, Fall 2001 – Chapter 8 Page 8-9 Steady State J H = - λ e d T d z Heat Flow = heat flux density cal cm sec JH 2 λe - effective thermal conductivity cal cm soil sec ° K T - temperature °K z - distance (cm) Transient State ∂T - ∂ J C = ∂t ∂z H ∂T ∂ ⎡ C = ⎢λ ∂t ∂z ⎣ e ∂T ⎤ ∂z ⎥ ⎦ If λe constant with z C ∂T = λ ∂t e 2 ∂ T 2 ∂z ∂T = K ∂t T 2 ∂ T 2 ∂z K T λe = C K T - Soil thermal diffusivity
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Chapter 8 - Soil Temperature - LAWR

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