A compressor tip clearance flow control scheme is explored using fluidic actuators, the so-called " synthetic jets " , on the casing wall acting over the clearance region. The analysis of flow visualization images show the largest increase in mixing level when forced at the optimal frequency. A reduction in the tip clearance-related blockage is demonstrated using an array of synthetic jet actua...

Microfluidic particle separation arrays are capable of passive sorting of microparticles or cells by size while avoiding blockage. Despite the usefulness of boundaries for concentration and parallel integration of arrays, separation efficiency is severely degraded in the areas adjacent to the boundaries due to the aberrant fluid flow found there. This letter shows how to eliminate this problem ...

A thermal lattice Boltzmann method (TLBM) is used for analysis of flow and heat transfer in two-dimensional channels. Simulation results are presented for thermal Couette and thermal Poiseuille channel flows. Analytical solution for temperature field in hydraulically and thermally developed flows are used to verify the current TLBM results. The method is further applied to study the forced conv...

Tidal turbines are located in shallow water depths comparison to their dimensions (15 m-diameter 40 m depths, typically). Constrained vertically by the depth and laterally neighbouring turbines, flow within a tidal farm is subjected blockage effects that influence performance of individual devices. The Betz limit (which maximum power extractable from an unconstrained flow) can, therefore, be ex...

Presented here is a 47-year-old man for whom right central venous chemoport catheterization was performed without radiological guidance. Within 8 days, the catheter became nonfunctional and non-contrasted thoracic CT was performed to trace its course. The tip of the catheter appeared to have perforated the opposite wall of the ipsilateral brachiocephalic vein and entered the adjacent brachiocep...

Optical coherence tomography angiography (OCT-A) is a recently established noninvasive technology for evaluation of the retinal and choroidal vasculature. The literature regarding the findings in choroidal nevi is scarce. We report the OCT-A findings associated with two different variants. Subject one had decreased vascular flow signal in the choroidal, choriocapillaris, deep retinal, and super...

Wind-induced interference effects may result in a significant increase or decrease the wind loads on buildings constructed groups due to modifying flow around, depending shape and relative location of buildings. Experimental study wind-induced mean root square (RMS) pressure coefficients between two tall are investigated detail for various conditions this study. The Interference RMS presented a...

Hepatic outflow obstruction created by balloon occlusion of the hepatic vein induces characteristic angiographic findings in the occluded area: prolonged enhancement on hepatogram followed by reversed portal opacification on the hepatic arteriogram and perfusion defect on the arterial portogram. The following induced hepatic hemodynamic changes are suggested: hepatic arterial flow increases, an...