The discussion centers on the relationship between bulk charge density and surface charge in electrohydrodynamics (EHD). It is established that a constant bulk charge density does not inherently produce a surface charge; however, fluid motion can lead to the accumulation of surface charge. The participants reference the Euler equations and Maxwell's equations to analyze the electric fields inside and outside the fluid medium. The conversation highlights the importance of calculating electric displacements and the conditions under which surface charge may be considered negligible.
PREREQUISITESResearchers and engineers in the fields of electrohydrodynamics, fluid dynamics, and electrical engineering, particularly those focusing on the behavior of charged fluids and their applications in industrial processes.
I don't know. It's certainly something that I'm not going to be concerned about when I deal with variable charge density, although I am curious where the term ##\rho_{v}\mathbf{u}## comes from. That would couple the variable charge density very nicely.renormalize said:So do you agree that the authors meant to write ##\nabla## and that their eq.(2) is therefore not nonsense?