The shear stress, for a Newtonian fluid, at a surface element parallel to a flat plate, at the point y, is given by: where μ is the dynamic viscosity of the fluid; u is the velocity of the fluid along the boundary; y is the height above the boundary....
In the previous equations, it can be noted that the shear stress at the liquid-vapour interface is the central feature in determining the fluid dynamics of the falling film. Like friction, the interfacial shear stress is commonly expressed with a friction factor fi at the interface [92]: (...
Flow pattern and shear stress levels were also studied in the Integrity™ Xpansion™ Multiplate Bioreactor, using a computational fluid dynamics (CFD) approach. The analysis revealed the occurrence of gentle laminar flow and a maximum wall shear stress lower than 10 mPa, which was 1000 times ...
flow/ shear stress stratified flow gas-liquid flow hot-film anemometry technique interfacial friction factor void fraction Reynolds numbers/ A4755H Stratified flows A4755K Multiphase flows A4760 Flows in ducts, channels, and conduits A4780 Measurement instrumentation and techniques for fluid dynamics ...
A theoritical bottom shear stress for a wave-current coexisting system is derived by means of the theory of boundary layer assumption. According to the theoritical results, the practical formula to calculate the bottom shear stress effected by non-liner between wave and current has been obtained...
16.Establishment of elastic carotid artery stenosed model in rabbit and wall shear stress computational fluid dynamics simulation弹性壁兔颈动脉狭窄模型的建立及切应力数值模拟 17.Application of tension-free repair in the resection of implanted metastatic lesions of abdominal wall puncture trocars无张力修补...
16.Establishment of elastic carotid artery stenosed model in rabbit and wall shear stress computational fluid dynamics simulation弹性壁兔颈动脉狭窄模型的建立及切应力数值模拟 17.Application of tension-free repair in the resection of implanted metastatic lesions of abdominal wall puncture trocars无张力修补...
twoflows,andthefluiddynamicsarechanged.So,themethod tocalculatethebedshearstressforcombinedwaveand current conditions is somewhat more uncertain due to the possibility of the nonlinear interaction as the flow becomes more energet- ic (Soulsby et al., 1993; Soulsby, 1997). A number of models ...
spins, the edge experiences a higher wall shear stress because it is moving faster relative to the fluid. At the center of the disk, there is minimal shear stress as the cells are moving slowly with respect to the fluid. This produces a shear stress gradient that is described by the ...
Tang BT, Pickard SS, Chan FP, Tsao PS, Taylor CA, Feinstein JA: Wall shear stress is decreased in the pulmonary arteries of patients with pulmonary arterial hypertension: An image-based, computational fluid dynamics study. Pulm circ. 2012, 2: 470-476. 10.4103/2045-8932.105035. Article PubMed...