Dear all,
I'm setting a simple model about the gravity anomaly induced at surface by a denser rod below ground level. I've to solve the Poisson Equation for the gravitational potential. I've selected a FORCE POTENTIAL as dependent variable and the DENSITY as source term. Then, I've defined the diffusion coefficient as 1/(4*pi*G_const).
As boundary conditions I've selected a zero flux at surface and a Dirichlet b.c. on the remaining walls.
The model is solved but the results are not correct...I've done something wrong or I'm missing somewhat!
Particularly the acceleration (derivative of u along y) along two cross section displays an uncorrected trend compared to analytical solution. Any suggestions are welcome.
Gianluca
I'm setting a simple model about the gravity anomaly induced at surface by a denser rod below ground level. I've to solve the Poisson Equation for the gravitational potential. I've selected a FORCE POTENTIAL as dependent variable and the DENSITY as source term. Then, I've defined the diffusion coefficient as 1/(4*pi*G_const).
As boundary conditions I've selected a zero flux at surface and a Dirichlet b.c. on the remaining walls.
The model is solved but the results are not correct...I've done something wrong or I'm missing somewhat!
Particularly the acceleration (derivative of u along y) along two cross section displays an uncorrected trend compared to analytical solution. Any suggestions are welcome.
Gianluca