Physics · Fluid Mechanics
What characterizes the thermal boundary layer in fluid flow over a surface?
- 1An instantaneous, discrete step change in temperature at the surface boundary.
- 2A region where fluid temperature changes gradually from the surface temperature to the free-stream temperature.✓
- 3Constant uniform temperature exists throughout the entire fluid.
- 4No temperature change occurs anywhere in the fluid.
Correct answer
A region where fluid temperature changes gradually from the surface temperature to the free-stream temperature.
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