Pressure Changes Along Flow Experiencing Heat Transfer

In summary, pressure in relation to heat transfer is the force exerted by a fluid per unit area. Heat transfer can cause changes in pressure in a fluid flow by changing the temperature of the fluid. An increase in pressure in a heated fluid typically results in a decrease in flow rate. The type of fluid can also affect pressure changes by influencing its specific heat capacity and thermal conductivity. Several factors, such as changes in temperature, flow rate, fluid properties, and system geometry, can cause pressure changes along a flow experiencing heat transfer.
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ccrook
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For an airflow experiencing a large heat transfer, say a delta of ~600 degrees celsius, I assume compressible effects cannot be ignored. I am struggling however with some conceptual elements, such as how the pressure gradient changes along the flow when compared with compressible and inviscid flow. Is there a technique for calculating both the change in flow rate and temperature at the exit given the rate of heat transfer and entry conditions of the flow?
 
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FAQ: Pressure Changes Along Flow Experiencing Heat Transfer

What is pressure in relation to heat transfer?

Pressure is the force exerted by a fluid per unit area. In the context of heat transfer, pressure changes can occur due to the expansion or compression of the fluid as it experiences temperature changes.

How does heat transfer affect pressure changes in a fluid flow?

Heat transfer can cause changes in pressure in a fluid flow by changing the temperature of the fluid. As the temperature increases, the molecules in the fluid gain kinetic energy and begin to move faster, resulting in an increase in pressure. Conversely, a decrease in temperature can lead to a decrease in pressure.

What is the relationship between pressure and flow rate in a heated fluid?

In a heated fluid, an increase in pressure typically results in a decrease in flow rate. This is because the molecules in the fluid are closer together at higher pressures, leading to increased resistance to flow.

How does the type of fluid affect pressure changes along flow experiencing heat transfer?

The type of fluid can affect pressure changes along flow experiencing heat transfer by influencing the fluid's specific heat capacity and thermal conductivity. These properties determine how quickly the fluid can absorb or release heat, which can impact pressure changes along the flow.

What factors can cause pressure changes along flow experiencing heat transfer?

Several factors can cause pressure changes along flow experiencing heat transfer, including changes in temperature, changes in flow rate, changes in fluid properties (such as specific heat capacity and thermal conductivity), and changes in the system's geometry or surface area.

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