An investigation has been carried out to assess the effect of volute design on the performance of a centrifugal compressor. Three volutes, based on a turbocharger compressor volute, have been fabricated and tested. These volutes provided two that were larger than the original design, and one that was smaller. The alternative volute designs were fabricated from sheet steel and had a square cross...

• Euler-Lagrange simulations of agitated solids suspensions including breakage Solids distribution and flow structures evolve with particle size reduction process Revolving impeller is the major source Two-way coupled solids-liquid in a lab-scale mixing tank operating at Reynolds number 4000 volume fraction 10% have been performed. The keep track individual particles, their collisions. Upon col...

Multi-objective genetic algorithm (GAs) is used for pump design pareto optimization, competing objectives for centrifugal pump design are total head (H), input power (Ps), hydraulic efficiency ( H η ), and input parameter are capacity (Q), and the outer radius of the impeller ( ). Multi-objective presents a set of compromised solution, and provides non-dominated optimal choices for designer. 2 ...

Oil-water emulsion flow behaviour was characterized with respect to surface chemistry. A state of the art stirred tank experimental set up was constructed that measured dynamic droplet size evolution with varying impeller speed. This technique was demonstrated with model Nexbase oil (with and without SPAN 80 surfactants) and water emulsions. Further, a CFD model for droplet size prediction was ...

We study the influence on steady turbulent states of the forcing in a von Karman flow, at constant impeller speed, or at constant torque. We find that the different forcing conditions change the nature of the stability of the steady states and reveal dynamical regimes that bear similarities to low-dimensional systems. We suggest that this forcing dependence may be applicable to other turbulent ...

Crossflow turbines represent a valuable choice for energy recovery in aqueducts, due to their constructive simplicity and good efficiency under variable head jump conditions. Several experimental numerical studies concerning the optimal design of crossflow hydraulic have already been proposed, but all them assume that structural safety is fully compatible with sought after geometry. We show fir...

The issues of numerical modeling hydrodynamic resistance the impeller for mixing slurry mixtures in production cement compositions are considered. Mathematical models based on finite element method to analyze processes occurring cement-containing developed. influence rotor design value torque power shaft has been investigated. It is established that most acceptable option a vane creates good tu...