Learning Forum

[ngothientu]

Hello everybody,

I have a problem finding out the value of the Thermal diffusion coefficient (DT) of the solid micro-particle (eg: 1 μm - 10 μm) in the air(gas) from the mass flux equation: Jm = −ρD∇c − ρDTc(1 − c)∇T, (the equation figure is as below). (ρ is fluid density, D is diffusion coefficient, DT is thermal diffusion coefficient, c is mass fraction, T is temperature)

Please help me how to specifies DT value? maybe it can be calculated from an equation or experimental value table....? the recommendation for reference journals or textbooks is much more helpful.

I really appreciate any of your help, thank you in advance.

[Surya Deb]

Hello, nThis is something you will need to search for in existing literature. You might also start with a good Transport Property book, like for example Transport Phenomenon by Bird. et al. Are you using Species Transport to model this?nRegards,nSDnn

[ngothientu]

Hello, This is something you will need to search for in existing literature. You might also start with a good Transport Property book, like for example "Transport Phenomenon" by Bird. et al. Are you using Species Transport to model this?Regards,SDhttps://forum.ansys.com/discussion/comment/109874#Comment_109874

Thank Mr. sdeb for your recommendation. Yes, I used the Species Transport Model to simulate that problem.n