[dhruv]

Hi All,

I am calculating volume flow in a channel, and want to use the Gauss quadrature to calculate the volume flow rate. I searched on the net, and found some tables that have the points ( abscissa) and the corresponding weighting functions. As far as i understood, I can select any of the points in my domain as a point corresponding to one of the Gauss point (say of 5X5 matrix points), and then can use co-ordinate transformation to select the other points. What happens however, if the other points are outside the domain? How can I select the points then? Is there some rule to fix the points according to my domain?

Thanks,

Dhruv