Tracer diffusion under heat and momentum transport for general repulsive potentials

✍ Scribed by V. Garzó

• Publisher: Elsevier Science
• Year: 1996
• Tongue: English
• Weight: 832 KB
• Volume: 234
• Category: Article
• ISSN: 0378-4371
• DOI: 10.1016/s0378-4371(96)00291-9

✦ Synopsis

Tracer diffusion in a steady state with both velocity and temperature gradients is analyzed. The results are obtained from a kinetic model that incorporates a temperature dependence in the collision frequencies. This allows for the consideration of general r-t-repulsive interactions. An explicit expression of the tracer diffusion tensor is obtained in terms of the shear rate, the mass ratio, the force constant ratio and a parameter characterizing the interaction model considered. This expression extends previous results derived in the case of Maxwell molecules (I=5).