Abstract
AbstractThe interrelation between the flow properties of fluids and the shear‐induced changes of their structure is discussed and the methods for their study are reviewed. The fruitful interaction between (conventional) theory, simulation, experiment and application is emphasized. Results are presented for simple fluids where the distortion of the local (short range) order, as described by the pair‐correlation function or the static structure factor, is found to be in good agreement with kinetic theory predictions. Experimental data are compared with results of nonequilibrium molecular dynamics (NEMD) computer simulations which are also used to study the non‐newtonian flow behavior of simple fluids. The spectacular long range positional order found in NEMD simulations at high shear rates is reviewed and interpreted as a hydrodynamic instability.
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