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5. Определите тип граничных условий для уравнения:
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\(\displaystyle \rho C_T\left[\frac{\partial T}{\partial t} + v\frac{\partial T}{\partial x}\right] = \lambda_L\frac{\partial^2 T}{\partial x^2} + \Delta H\,w, \qquad T(t=0,\,x) = T^0(x).\) |
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| I |
\(\displaystyle T(t,\,x=0) = 20,\) |
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\(\displaystyle \frac{\partial T}{\partial x}(t,\,x=l) = 0{,}5;\) |
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| II |
\(\displaystyle \frac{\partial T}{\partial x}(t,\,x=0) = \alpha\left\{T(t,\,x=0) - T_{cp}\right\},\) |
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\(\displaystyle \frac{\partial T}{\partial x}(t,\,x=l) = 0{,}2t.\) |
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