Apame: 3D panel code question
Hi
If someone have looked at the Matlab or Fortran implementation of Apame 3D panel code (3dpanelmethod.com/), please help me with the following question. For the following part of code, WHY the freestream velocity component in transversal direction "gp" is NOT taken into account? Is this because there is no sideslip angle? The vectors u, p, o are unit vectors in longitudinal, transversal and perpendicular direction, while qu, qp, qo is the induced velocity in longitudinal, transversal and perpendicular direction.  % induced velocity in perpendicular direction qo = (p1(i,j)*o1(i,j) + p2(i,j)*o2(i,j) + p3(i,j)*o3(i,j))*(qp  (u1(i,j)*p1(i,j) + u2(i,j)*p2(i,j) + u3(i,j)*p3(i,j))*qu) % freestream velocity components gu, go in longitudinal and perpendicular direction gu = u1(i,j)*Vx + u2(i,j)*Vy + u3(i,j)*Vz; go = o1(i,j)*Vx + o2(i,j)*Vy + o3(i,j)*Vz; % resultant velocity vx(i,j) = (qu + gu)*u1(i,j) + (qo + go)*o1(i,j); vy(i,j) = (qu + gu)*u2(i,j) + (qo + go)*o2(i,j); vz(i,j) = (qu + gu)*u3(i,j) + (qo + go)*o3(i,j); v(i,j) = realsqrt(vx(i,j)^2+vy(i,j)^2+vz(i,j)^2);  If I have to consider the sideslip, does the following correction make sense?  gu = u1(i,j)*Vx + u2(i,j)*Vy + u3(i,j)*Vz; gp = p1(i,j)*Vx + p2(i,j)*Vy + p3(i,j)*Vz; go = o1(i,j)*Vx + o2(i,j)*Vy + o3(i,j)*Vz; vx(i,j) = (qu + gu)*u1(i,j) + (qp + gp)*p1(i,j) + (qo + go)*o1(i,j); vy(i,j) = (qu + gu)*u2(i,j) + (qp + gp)*p2(i,j) + (qo + go)*o2(i,j); vz(i,j) = (qu + gu)*u3(i,j) + (qp + gp)*p3(i,j) + (qo + go)*o3(i,j);  Any help in this regard is appreciated. Regards 
I think nobody is interested in panel codes any more! :rolleyes:

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