CFD

Biopiles are a common treatment worldwide for the ex-situ remediation of contaminated soil. Much research has been carried out on understanding and modelling microbial degradation, but hitherto no study has attempted to model the effect on a biopile of its ambient surroundings. This paper presents a

In this study, the appropriate cell type for periodic boundary conditions (PBC) in CFD analysis for spacerfilled membrane module design was validated by comparing the simulated values of pressure drop with that obtained by experiments. The pressure drop through spacer-filled channel depends on the g

In this study, the hydrodynamics of a pilot scale membrane bioreactor (MBR) with different configurations for air scouring were investigated experimentally and numerically. The results were analyzed with the aim to derive a correlation between the aeration flow rate and the circulation velocity in t

Recently, computational fluid dynamics (CFD) models of flows in membrane channels have been proposed and validated against published simplified models available in the literature. In this paper, experimental and numerical analysis is performed for a reverse osmosis (RO) module and results compared i

Spacers are designed to create directional changes in the flow through membrane modules. Such secondary flow structures reduce concentration polarization and membrane fouling. Obviously, type of the spacer used in membrane modules strongly influences the resulting flow and therefore performance of t

The objective of this research project was to develop a process that makes use of low-grade heat provided from solar irradiation to drive a distillation-desalination process. An optimized distillation process re-uses input heat, by using the heat-of-condensation as the heat source for pre-heating th

UV-photolysis and photo-initiated oxidation are promising technologies for water disinfection and the degradation of some organic precursors of disinfection by-products (DBPs). Due to the complexity of UV systems and the interaction of many parameters, the simulation of UV reactors for design optimi

A numerical study was carried out to investigate the micro-climatic environmental conditions inside a greenhouse– distillation system, self-sufficient for irrigating water. The greenhouse consists of the planting cavity, circulating air channels and roof solar distiller for the production of a rathe

CFD simulations were used to determine mass transfer coefficients and power consumptions in channels filled with non-woven net spacers. The geometric parameters of a non-woven spacer were found to have a great influence on the performance of a spacer in terms of mass transfer enhancement and power c

While models of membrane systems with varying degrees of complexity have been developed since the early 1960s, reports of the use of computational fluid dynamics to provide in-depth insights into the separation phenomenon have only recently appeared in the literature. This paper describes the valida