Re: PDE toolbox-Neumann boundary conditions



"Jessica Roque" <pamjessikka@xxxxxxxxx> wrote in message <gno98o$lrj$1@xxxxxxxxxxxxxxxxxx>...
under what conditions should i assume that i have to use pure neumann boundary conditions (q=0)?

Pure Neumann means thermal flux is provided. Dirichlet means temperature is set on the boundary.

also, what is the difference of q in the neumann boundary conditions specification and h in the pde specification when they are both defined as heat transfer coefficient?

q is coefficient for inside/outside heat transfer. Not sure what is h as you do not give us your equation.

Bruno
.



Relevant Pages

  • Re: Hot air smd rework station. SMD removal??? Defective Machines???
    ... study of thermodynamics and heat transfer. ... think that a higher temperature is better for soldering. ... The raising of the temperature to the melting point of the solder ... A clean iron, well tinned, clean circuit board and component lead, fluxed. ...
    (sci.electronics.repair)
  • Re: Vapor as rocket propellant and coolant
    ... The heat transfer coefficient of cooling gas is ... If the temperature ... Low tank pressure is desirable because it reduces ...
    (sci.space.tech)
  • Re: Here comes WW III....
    ... this means that the temperature at the surface ... on the surface like clouds and vulcanic activity. ... the heat transfers - doesn't prevent us from predicting the climate ... limited to vertical heat transfer through the atmosphere. ...
    (sci.electronics.design)
  • Re: Too goofy?
    ... Thermosyphon in a modern engine could not work because ... As I said in an earlier message, with the thermostat closed, the water ... This keeps the temperature ... layer that may form and prevent efficient heat transfer. ...
    (rec.autos.tech)