DISCUSSION ON SOME CONCEPTS OF MULTI -FIELD IN NUM

There are coupling phenomenon which are correlation of momentum, energy and mass transfer in field of flows, heat transfer, mass transfer and combustion. The coupling which may is blended in terms of fluctuating correlation of turbulence and flowing averaged variable terms is showed up based on higher -order fluctuating correlation of turbulence and Reynolds-averaged equations in this paper .Concepts of coupling of turbulence fluctuating variable and coupling of flowing averaged variable are proposed also . The coupling phenomenon that is correlation of momentum and energy and mass transfer is discussed in detail with coupling of flowing averaged variable by way of turbulence models or closure statistical moment equations of Reynolds-averaged equations, which is pointed out. In this paper, the concept of multi-phase coupling and solved methods of coupling problems is introduced also.