>>11161922>What do you mean by a solution not existing exactly?Given a specified set of parameters (density, pressure distribution, boundary, etc.), is there even any flow velocity field that satisfies the equation? Or are there sets of parameters that no flow can satisfy? In essence, what are the constraints that must be placed on the parameters to guarantee that a corresponding flow can fit the equation? Are there weird, but not unreasonable, pressure situations where the equation breaks down?