The centrifugal fan is widely used in converting mechanical energy to aerodynamic energy. To improve the pressure of multi-blade an air purifier, optimization process was proposed based on extreme learning machine (ELM) combined with particle swarm (PSO). blade definition position parameter and radian were designed using full-factor simulation experimental method. steady numerical each point ca...

The paper deals with numerical simulations of transonic flow through the turbine blade cascade consisting flat profiles. is one variants tip section ultra-long blades, which were designed for last stage steam turbine. CFD realized by means ANSYS CFX commercial software using γ-Re θ bypass transition model completed two-equation SST turbulence model. Some made only comparison. Numerical results ...

The synthesis of a novel functional biomaterial for wound healing treatment was carried out by adopting a free-radical grafting procedure in aqueous media. With this aim, ciprofloxacin (CFX) was covalently incorporated into collagen (T1C) chains employing an ascorbic acid/hydrogen peroxide redox pair as biocompatible initiator system. The covalent insertion of CFX in the polymeric chains was co...

This article describes a 3D CFD (computational fluid dynamics) simulation implementation of the stepped planning hull in calm water. The turbulent free surface flow around the stepped planing hull is computed with a RANSE method, using the solver ANSYS-CFX. The turbulence model used is standard k–ε. In order to simulate the disturbed free surface, VOF model is implemented. The CFD model has bee...

The efficiency and economical performance of sewer systems is an essential issue in urban drainage. The need for sewers to carry sediment has been recognized for many years. One of the main problems in designing sewerage systems is the sediment deposition. Sedimentation in sewers occurs regularly according to the alternating natural flow. The present study investigates the hydraulic characteris...

In this paper, a numerical simulation of fluid flow and conjugate heat transfer in solar thermal parabolic trough collector (PTC) system is presented. The being carried out on prototype designed the Mechanical Laboratory order to analyze performance system. main objective compare with without secondary reflector (SR). PVSYST software used provide temporal values flux Laghouat city (ALGERIA). So...

An investigation on new rotor blade designs conceived to produce higher exit relative kinetic energy of a mixed flow turbine is undertaken. Accelerating the through in frame reference improves transfer shaft, which only produced rotating rotor. A three-dimensional converging channel might respond analysis requirements subsonic regimes. Effectively, machine experiences 3.71 % and 3.67 increase w...

Dietary proteins are mostly absorbed as di- and tripeptides by the intestinal proton-dependent transporter PepT1. We have examined the effects of leptin on PepT1 function in rat jejunum and in monolayers of the human enterocyte-like 2 cell Caco-2. Leptin is produced by the stomach and secreted in the gut lumen. We show here that PepT1 and leptin receptors are expressed in Caco-2 and rat intesti...