diffusive fluxの例文

• Here, the convective and diffusive fluxes at the boundary sum to zero:
• Consequently, when there is transfer of matter, the calculation of the pure'heat flux'component of the diffusive flux of internal energy rests on practically unverifiable assumptions.
• The left hand side gives the net convective flux and the right hand side contains the net diffusive flux and the generation or destruction of the property within the control volume.
• Where J _ { \ phi } is the diffusive flux of \ phi, and q _ { ij } is the sub-filter stress tensor for the scalar \ phi.
• But when there is transfer of matter, the exact laws by which temperature gradient drives diffusive flux of internal energy, rather than being exactly knowable, mostly need to be assumed, and in many cases are practically unverifiable.
• The impossibility of a mechanical definition in terms of work for this circumstance does not alter the physical fact that a temperature gradient causes a diffusive flux of internal energy, a process that, in the thermodynamic view, might be proposed as a candidate concept for transfer of energy as heat.
• In many writings in this context, the term " heat flux " is used when what is meant is therefore more accurately called diffusive flux of internal energy; such usage of the term " heat flux " is a residue of older and now obsolete language usage that allowed that a body may have a " heat content ".
• In this circumstance, it may be expected that there may also be active other drivers of diffusive flux of internal energy, such as gradient of chemical potential which drives transfer of matter, and gradient of electric potential which drives electric current and iontophoresis; such effects usually interact with diffusive flux of internal energy driven by temperature gradient, and such interactions are known as cross-effects.
• In this circumstance, it may be expected that there may also be active other drivers of diffusive flux of internal energy, such as gradient of chemical potential which drives transfer of matter, and gradient of electric potential which drives electric current and iontophoresis; such effects usually interact with diffusive flux of internal energy driven by temperature gradient, and such interactions are known as cross-effects.