When solving a transient conduction problem numerically with time step can be im

Question

When solving a transient conduction problem numerically with time step can be important because it will affect the stability of the solution. 6) method, the choice of a) implicit b) explicit 7) Air at 25'C flows over a flat plate. If the plate surface temperature is maintained at 25C boundary layer will develop over the surface. a) Thermal b) Vclocity Both thermal and velocity 8) In the fully-developed (hydrodynamically and thermally) region of a flow in a circular tube a) The velocity at any radial position does not change along the flow direction b) The temperature at any radial position does not change along the flow direction c) Both a and b d) Neither a nor b

Explanation / Answer

Answer 6: when solving a transient conduction problem numerically with an Explicit method, the choice of time step can be important because it will affect the stability of the solution.

Answer 7 :

Air at 25oC flow's over a flat plate if the plate surface temperature is maintained at 25oC. then only velocity profile will form.

Answer 8 :

In the fully developed (hydrodynamically and thermally) region of flow in the circular pipe.the velocity and temperature changes at every radial position along the flow of direction. hence answer is:

d) neither a nor b.

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