Alter equations in tecplot: taking derivatives
 

How can I take derivative of x velocity wrt y?

Whats is the syntax

I tried following syntax but it did not work

{k} = dd (x velocity)/ddy

Please help

Hello Hassan,

The Tecplot 360 manual will provide you all of the necessary syntax for our Data Alter Specify Equation tool. It is Chapter 20, Section 1.1 Equation Syntax.

To take the derivative of X Velocity the equation is ddy({X Velocity})

y-derivative in tecplot is not giving correct answer
 

Hi,
I am comparing tecplot generated data (by Alter Data) with metlab.
following are the equation in tecplot:
{u}=sin({x}) * cos({y})
{v}=cos({x}) * sin ({y})
{duxx}=ddx({u})
{duyy}=ddy({u})

where x varies from 0 to 6 same as y 0 to 6 (uniform grid).
derivative in x is correct, but in y direction result is not expected. magnitude of very high value such as 10^37 occurs.