Qmu sensitivity analysis on MassFlux response. 
MassFlux1, Massflux2 and Massflux3 are 3 sides of a triangle. MassFlux1 + MassFlux2 should be equal to MassFlux3
MassFlux4 to 6 are circles, 10,100 and 1000 grids, .4,.3 and .2 radius. Mass flux for thoses circlyes should be 0.
