Applications to Flow Processes

The fundamental equations generally applicable to flow processes are presented in Sec. 7.1, and in later sections these equations are applied to specific1 processes. 

The application of thermodynamics to flow processes is also based on conservation of mass and on the first and second laws. The addition of the linear momentum principle makes fluid mechanics a broader field of study. The usual separation between thermodynamics problems and fluid-mechanics problems depends on whether this principle is required forsolution. Those problems whose solutions depend only On conservation of mass and on the laws of thermodynamics are commonly set apart from the study of fluid mechanics and are treated in courses on thermodynamics. Fluid mechanics then deals with the broad spectrum of problems which require application of the momentum principle. This division is arbitrary, but it is traditional and convenient... 

Hie applications of thermodynamics to flow processes usually are to finite amounts of fluid undergoing finite changes in state. One might, for example, deal with the flow of gas through a pipeline. If the states and thermodynamic properties of the gas entering and leaving the pipeline are known, then application of the... 

Two idealizations are imposed from the start to facilitate the application of S thermodynamic principles to flow processes ... 

CHAPTER 7. Applications o/Thermo namics to Flow Processes... 

Total shear n. A concept (1956) that indicates shear mixing in extruders, but also applicable to other processes in which shear is the principal flow mode. It is the integrated product of shear rate times time over the region in which a melt is undergoing shear flow. The ratio of initial to final striation thickness is proportional to total shear. 

Haghighi, H. Chapoy, A. Burgess, R. Tohidi, B. Experimental and thermodynamic modelling of systems containing water and ethylene-glycol application to flow assurance and gas processing. Fluid Phase Equilibr. 2009 276 24 - 30. 

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