Abstract In this article, a numerical investigation of the effect miniaturized five-hole probe downstream transonic low-pressure turbine vane row is presented. First, calibration was performed in uniform flow conditions, as case for any traditional calibration, wide range Mach number, yaw angle, and pitch angle conditions. The on general field throughout segments then evaluated by performing co...

Our insights into the basic characteristics of neuronal function were significantly advanced by combining the in vitro slice technique with the visualization of neurons and their processes. The visualization through water immersion objectives requires keeping slices submerged in recording chambers where delivering artificial cerebro-spinal fluid (aCSF) at flow rates of 2-3 ml/min results in a l...

Due to the numerous applications of lipases in industry, there is a need to study their characteristics, because lipases obtained from different sources may present different properties. The aim of this work was to accomplish the partial characterization of lipases obtained through submerged fermentation and solid-state fermentation by two species of Aspergillus. Fungal strains were isolated fr...

The heat transfer performance of a solar external receiver tube with guide vanes was numerically studied under non-uniform flux conditions. Models the smooth and were built. distributions temperature, velocity, turbulence intensity, Nu predicted by these two models compared to investigate enhancement mixing effect vanes. Re α on also studied. results show that form spiraling flows, reduce maxim...

Abstract Fan systems used to transport fluids are widely and have become a major consumer of electrical energy worldwide. A significant part the available transported air in HVAC has usually been lost (in form dynamic pressure) at system outlet. It is well-known that using outlet diffusers leads this loss be reduced. In some cases, it necessary use shortened wide-angle diffusers, which higher c...

This paper describes the effects of guide vanes installed in curved conduits with main emphasis on pressure loss reduction. In parts conduits, eddy zones are created due to flow separation resulting an increased value drop. Installation can prevent creation large zones. On other hand, cross-section conduit is decreased by placing vanes, leading growth That why properties needed be selected care...

Wood is a common material used for the manufacture of many products, and submerged wood, in particular, has been used in niche markets and musical instruments. In order to examine if submerged wood in British Columbia, Canada, would be appropriate for use as musical instruments, a study was performed in 2007 on submerged wood from Ootsa Lake, British Columbia, Canada. The results of that study ...

In process of AC square wave submerged arc welding, electric signal waveform determines the arc energy characteristics in the time and frequency domain, which also reflects the arc stability of welding proc ess and quality indirectly. Using Wigner-Ville distribution (WVD), time frequency analysis is conducted to the current signal of AC square wave submerged arc welding. The Pseudo Wigner-Ville...

A multistage centrifugal pump is designed for pumping low-viscosity, highly volatile and flammable chemicals, including hydrocarbons, high head requirements. The five-stage consists of a double-suction impeller at the first stage followed by twin volute. impellers stages two through five are single-suction diffuser vanes return channel vanes. analytical performance calculated initially in desig...