Means, 1. Whenever there is transport of mass, there can be or will be two ways - i) Molecular diffusion flux & ii) Convective flux. 2. For liquids with negligible relatively diffusion flux, only convective flux dominates & for gases, transport can be done without convective flux. 3. Divergence of total flux through surfaces matters for a control volume mass accumulation term whether it is source or sink. 4. Rate is nothing but source of consumption or production which affects the net divergence of fluxes & concentration content in control volume of a system at any instant. Rate term can be constant or transient in time or (space ?). 5. These fluxes transport matters for open systems which interacts with at least mass or energy & if not energy then should be with mass. 6. For full conservation condition, this equation should satisfy with mass balance of control volume in all three directions of flux interactions. Thank you sir ❤️.
Hello, When does a mass transfer 'stop'? I know that it never stop because at equilibrium we wont have the same concentration therefor we will have always fluxs but in both direction ==> they neglect each other (NA = -NA), is it true? Thank you
Means,
1. Whenever there is transport of mass, there can be or will be two ways -
i) Molecular diffusion flux &
ii) Convective flux.
2. For liquids with negligible relatively diffusion flux, only convective flux dominates & for gases, transport can be done without convective flux.
3. Divergence of total flux through surfaces matters for a control volume mass accumulation term whether it is source or sink.
4. Rate is nothing but source of consumption or production which affects the net divergence of fluxes & concentration content in control volume of a system at any instant. Rate term can be constant or transient in time or (space ?).
5. These fluxes transport matters for open systems which interacts with at least mass or energy & if not energy then should be with mass.
6. For full conservation condition, this equation should satisfy with mass balance of control volume in all three directions of flux interactions.
Thank you sir ❤️.
Thank you !! Very useful and clear as an introduction to transport :)
I enjoyed your metaphor, thanks a lot :)
Thanks a lot, it's really helpful
Hello,
When does a mass transfer 'stop'? I know that it never stop because at equilibrium we wont have the same concentration therefor we will have always fluxs but in both direction ==> they neglect each other (NA = -NA), is it true?
Thank you
no way a bird can consume a whole orange
A dinosaur bird?
that bird must have a pretty wide mouth
14:26 "Diffusive flusks plux" lmao tongue twister