Hey there fellow researchers!
I have a quandary that I would like further understanding of. In vortex methods involving vorticity shedding from the surface, I have read that the height at which the vortex panels are diffused are determined through the process of diffusion caused by the impulsive motion of a flat plate. However, in several papers the constant which occurs in the equation is different. How is the value of the constant defined, and is the constant of vital importance to the method? Your help with this matter would deepen my understanding advanced discrete vortex methods. Herewith are attached a couple of the papers that I have been going through.
Use this forum cfd.online it may be helpful for your topic. Good luck
There isn't any unique choice for the parameters for implementing the diffusion equation (or in general for discretising any equation). The various parameters in the simulation should be chosen such that some conditions are satisfied (convergence), and these parameters could also vary according to the problem/geometry. This publication and the references therein (prominently Koumoutsakos, Leonard) could help.
Though not directly related to your specific question (however related to your more global quandary of application of a vortex method to an impulsively started flat plate), this paper addresses sensitivities of compromises (rarely discussed in publications) involved in the application of a Discrete Vortex Method to a canonical pitch ramp-hold maneuver.
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