Intenal energy increase in wind of star ?

[sam_021]

Homework Statement

If a big star gives of wind , forming shock and then a bubble .. And then this bubble is driven by pressure
Also as the bubble expands the surrounding mass gets added to it
Does it make sense for the Total energy to increase ?

Homework Equations

The Attempt at a Solution

 

[berkeman]

Homework Statement

If a big star gives of wind , forming shock and then a bubble .. And then this bubble is driven by pressure
Also as the bubble expands the surrounding mass gets added to it
Does it make sense for the Total energy to increase ?

Homework Equations

The Attempt at a Solution

What are your thoughts? How do you define Total Energy? What source of energy is driving the surface activity on a star?

 

[sam_021]

What are your thoughts? How do you define Total Energy? What source of energy is driving the surface activity on a star?

total energy = thermal + Kinetic

Star gives off mechanical energy, then forming shocks which inturn heats up the surrounding, thus driving the shock via pressure

I would say that the total energy decreases ?
Just from simply looking at the equations Thermal=3/2PV and Ek=0.5mv^2

but I have results that contradict that :(

 

[sam_021]

anyone ?