The numerical simulation of the interaction between a free surface flow and a moving obstacle is considered for the analysis of hydroplaning flows. A new augmented Lagrangian method, coupled to fictitious domains and penalty methods, is proposed for the simulation of multiphase flows. The augmented Lagrangian parameter is estimated by an automatic analysis of the discretization matrix resulting...

The results of batch settling tests (BST) are used to investigate settling behavior of solids suspension, which contribute to sizing thickeners. Conventional methods in analyzing BST on the basis of visual and graphical procedures lead to sub-optimally sized and selected thickeners. A computational approach based on quantitative analysis of BST can be beneficial. About 300 settling experiments ...

Nutrients such as phosphate and soil particles are much more susceptible to loss with sediments in eroding run-off water, this due the erosion has a negative influence on agricultural output. To prevent it, various approaches have been taken, including idea that particle driven coagulation may speed up sedimentation minimize quantity of material lost. The specific purpose study was examine effi...

202 Published By: Blue Eyes Intelligence Engineering & Sciences Publication Pvt. Ltd.  Abstract—This paper presents the use of meta-heuristic technique to obtain three parameters (KP, KI and KD) of PID controller for Coupled Tank System (CTS). Particle Swarm Optimization (PSO) is chosen and Sum Squared Error is selected as objective function. This PSO is implemented for controlling desired liq...

Proposed crewed and robotic exploration activities demand that high-performance, cryogenically fueled, in-space stages perform high delta-V missions that range from days to months in duration. In 2011 ULA presented a concept for the integration of in-space tank pressurization/vent, power-generation, attitude control and vehicle propellant settling functions into a single system based on the uti...

Membrane biological reactors combine the use of biological processes and membrane technology to treat wastewater. The use of biological treatment can be traced back to the late nineteenth century. It became a standard method of wastewater treatment by the 1930s (Rittmann, 1987). Both aerobic and anaerobic biological treatment methods have been extensively used to treat domestic and industrial w...

In Chemical industries level control of non linear interacting and non interacting systems is on huge demand due to multivariable process interactions. In this work a non linear liquid level process represented by a 40 liter four non interacting spherical tank was subjected to dynamic analysis. The data was indentified to be non linear and approximated to first order model with an error of less...

The article presents a method for calculating the parameters of treatment facilities to bring level precipitation and wastewater from small enterprises, shops, services Republic sewage irrigation trays. aim is improve design resource-efficient plants their widespread use, increase production capacity local plants, prevent environmental degradation. Hydraulic calculation settling tank was carrie...

Štúdium viazania stopových prvkov v sedimente vodnej nádrže Ružín Pre účely posúdenia možnosti využitia fyzikálnych a fyzikálno-chemických metód separácie, vybraná vzorka sedimentu z Ružína bola podrobené 5-stupňovej procedúre sekvenčnej extrakcie (SE) podľa Tessiera (Tessier et al., 1979) a Horowitza (Horowitz, 1991). Vo výluhoch bolo stanovované zastúpenie konštitučných (Fe, Mn, Ca a Mg) ako ...

In an influential 1977 article in Mother Jones magazine, journalist Ma•k Dowie accused Ford Motor Company executives of callously deciding to produce and continuing to market he Pinto (which he labeled a "firetrap") even after company crash tests showed that its gas tank would mptu•e in rea•end collisions at relatively low speeds [Dowie, 1977]. This reprehensible decision, according to Dowie's ...