Dimensional Analysis

[Luke5656]

Hello,

New to the forum. I am looking for some help with some work.

It is dimensional Analysis, i have done Dimensional analysis with the analysis bridge before. But i am stuck with the question below and trying to learn it. Any help much appreciated.

Attached question below.

Luke

 

[Deleted member 4993]

Hello,

New to the forum. I am looking for some help with some work.

It is dimensional Analysis, i have done Dimensional analysis with the analysis bridge before. But i am stuck with the question below and trying to learn it. Any help much appreciated.

Attached question below.View attachment 16559

Luke

What is the fundamental law of Physics you need to use here?

Law of conservation of energy:

Within a control volume:

Heat flow in = Heat flow out

Now what?

 

[Luke5656]

Thanks for the reply.
Now derive an equation using dimensional analysis?

 

[Luke5656]

Change the energy from one form to another?? Or derive an equation to do this?

 

[Deleted member 4993]

Thanks for the reply. Now derive an equation using dimensional analysis?

Now write that in terms of mathematical equation.

 

[Luke5656]

How do i derive it? I don't need to use analysis bridge do it?

 

[Luke5656]

I have read that heat transferred through a surface like a wall can be calculated as:

q = U A dT

Is this what i need to do so far?

 

[Luke5656]

Anyone else able to help with this??