Heating of fluid, cooling of solid

vgulyuz · November 23, 2015, 09:50

Hi,

Nowadays i'm working on a project which works like a heat exchanger. Consider a heated brick let say has a temperature of 400K and fluid that flows inside of brick has a temp of 300K. In this transient problem, fluid will be hotter and brick gets cooler during flow.

On the other hand, in solution i cant see the cooling of brick because of the constant wall temp bc. How can i solve this situation ? What kind of bc should i use?

Looking forward for your reply,
best regards

Gulyuz

bhargavbharathan · November 23, 2015, 15:54

Hi,

Maybe what you have to do is select convection under wall thermal conditions, specify free stream temperature (ambient temperature) and most importantly the heat transfer coefficient. This should work out fine.

-BB

November 23, 2015, 09:50	Heating of fluid, cooling of solid	#1
vgulyuz New Member Volkan Gülyüz Join Date: Jul 2014 Posts: 4 Rep Power: 11	Hi, Nowadays i'm working on a project which works like a heat exchanger. Consider a heated brick let say has a temperature of 400K and fluid that flows inside of brick has a temp of 300K. In this transient problem, fluid will be hotter and brick gets cooler during flow. On the other hand, in solution i cant see the cooling of brick because of the constant wall temp bc. How can i solve this situation ? What kind of bc should i use? Looking forward for your reply, best regards Gulyuz

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November 23, 2015, 15:54		#2
bhargavbharathan Member Bhargav Bharathan Join Date: Jun 2015 Location: Montreal, Canada Posts: 71 Rep Power: 10	Hi, Maybe what you have to do is select convection under wall thermal conditions, specify free stream temperature (ambient temperature) and most importantly the heat transfer coefficient. This should work out fine. -BB