[mufeng]

Dear all,
Recently, I am new to the hydrodynamics' linear stability analysis. And I have read a relative literature on linear stability analysis using openFoam(https://www.sciencedirect.com/scienc...00936116300024).
On the framework of openfoam, my question is that how to obtain the Jacobian matrix of the right handside of linearized Navier–Stokes equations as mentioned in equation(6).
All suggestions are appreciated.