How to Calculate Curl for a Rectangular Fluid Path

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To calculate the average curl of fluid flow in a rectangular path measuring 15 cm by 10 cm, the velocity vectors at each corner are given as Va=(10i + 5j), Vb=(5i + 10j), Vc=(5i + 10j), and Vd=(10i + 5j). A user seeks assistance on how to begin the calculation, specifically asking for an example of curl calculation for one side. The initial response indicates that the curl for side A is calculated using the determinant method, resulting in a value of zero. The discussion emphasizes the need for clarity on the calculation process for the curl in fluid dynamics.
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Calculate the average value of the curl of the fluid for a rectangular path 15 cm by 10 cm, as shown in the figure (see file attachment).

Va=(10i + 5j)
Vb = (5i+10j)
Vc= (5i + 10j)
Vd = (10i + 5j)

Could someone help me to get started with this one? Please :smile:

Maybe give me an example of how to calculate the curl for one side??
 

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Hi,

I went to the moderation queue to approve your attachment, but it was not there. :confused:

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don_anon25 said:
Calculate the average value of the curl of the fluid for a rectangular path 15 cm by 10 cm, as shown in the figure (see file attachment).

Va=(10i + 5j)
Vb = (5i+10j)
Vc= (5i + 10j)
Vd = (10i + 5j)

Could someone help me to get started with this one? Please :smile:

Maybe give me an example of how to calculate the curl for one side??

If I'm not mistaken, the curl of one side (ex. side A) would be the following:

\vec{V_a}\times\nabla=\det{\begin{bmatrix}\mathbf{i} & \mathbf{j} & \mathbf{k} \\ 10 & 5 & 0 \\ \frac{\partial}{\partial x} & \frac{\partial}{\partial y} & \frac{\partial}{\partial z}\end{bmatrix}}=0
 
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