A numerical simulation is performed to study the effect of two types vortex generators (VGs) on heat transfer coefficient and pressure drop in duct. There are V.G., one concave V.G. other rectangular. The aim observe effects shape arrangement this V.Gs channel increase with Reynolds number range from (300 1500). Both were placed 45o angle attack, an line staggered position. results shows that p...

Interpreting the complex interaction of nanostructured fluid flow with a dipole in duct, peripherally uniform temperature distribution, is main focus current work. This paper also sheds light on changes Nusselt number, profiles, and velocity distributions for fully developed nanofluid vertical rectangular duct due to placed near corner duct. A finite volume approach has been incorporated numeri...

Global active noise control has been obtained on the tonal noise from a small centrifugal blower, similar to those used in laptop computers. Compact control systems were investigated for two configurations. The blower was mounted in both a short rectangular duct and in a mock laptop case that was modeled as a two-dimensional rectangular enclosure. Secondary sources and error sensors were locate...

We consider magnetohydrodynamic (MHD) flows in a conducting rectangular duct with a non-conducting flow channel insert (FCI) in a constant transverse magnetic field. The computations based on the fully developed flow model are performed for three FCI modifications: (i) without pressure equalization openings, (ii) with the pressure equalization slot (PES) in the FCI wall parallel and (iii) perpe...

During metabolic acidosis, the cortical collecting duct (CCD) of the rabbit reverses the polarity of bicarbonate flux from net secretion to net absorption, and this is accomplished by increasing the proton secretory rate by α-intercalated cells (ICs) and decreasing bicarbonate secretion by β-ICs. To better characterize dynamic changes in H(+)-secreting α-ICs, we examined their morphology in col...

In this paper, planar and the cylindrical broadband non-uniform acoustic absorbers were constructed, both of which use absorption units (BAUs) as their building blocks. The impedance boundary Navier–Stokes equation (IBNSE) method was developed to predict characteristics lined duct with absorbers, in each small piece perforated plate is acoustically equivalent a semi-empirical model through cond...