Reply To: Calculate thrust from fluent

[N. M.]

Hello Rob,

I attempted this operation by writing the equation shown in the attached Figure 1. However, I believe that "Amag" is not the correct variable. I want the equation to be computed for each point on the outlet surface (in other words, for each cell), but "Amag," as I understand it, represents the area of the entire surface to which the equation is applied, not the area of a single cell. How can I define this equation to calculate it for each cell of the outlet surface and then sum all the results to obtain the overall thrust?

In the attached Figure 2, you can see how I tried to apply this equation (Figure 1) to the outlet surface. I went to Report Definitions → New → Surface Report → Sum, and then selected my expression under "Field Variable" and applied it to the outlet by selecting it under "surfaces." However, I am sure that "Amag" is not the correct area.

Thank you