- #1
danong
- 47
- 0
I have a question regarding fluid streamline vector,
why is it different from the usual position vector when you take the partial derivative of it in order to obtain the grad of it?
For position vector you take partial derivative and obtain the vector along (for say) a curve.
But in fluid dynamics,
instead of taking partial derivative directly with respect to x, to obtain U(i-vector),
you take the equipotential derivative with respect to x, which is so different from the previous case,
why is it?Thanks in advance.
why is it different from the usual position vector when you take the partial derivative of it in order to obtain the grad of it?
For position vector you take partial derivative and obtain the vector along (for say) a curve.
But in fluid dynamics,
instead of taking partial derivative directly with respect to x, to obtain U(i-vector),
you take the equipotential derivative with respect to x, which is so different from the previous case,
why is it?Thanks in advance.