The intensity of transport processes crucially depends on fluid motion. This is one of the salient features of transport phenomena in fluids. And since the fluid motion is impelled by the forces applied to the fluid, these fluid forces are of paramount importance in determination of the mentioned processes. Therefore, this chapter introduces the main forces that for engineering purposes act upon a fluid, namely, body forces, surface forces and surface tension. The concept of static pressure is also explained.


Surface Tension Contact Angle Normal Stress Stress Tensor Body Force 
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© Springer Science+Business Media, B.V 2008

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