Vesselin K. Krastev

On the effects of surface corrugation on the hydrodynamic performance of cylindrical rigid structures

Abstract.In this work, we perform fully three-dimensional numerical simulations of the flow field surrounding cylindrical structures characterized by different types of corrugated surface. The simulations are carried out using the Lattice Boltzmann Method (LBM), considering a flow regime with a Reynolds number

Multi-component Lattice Boltzmann simulation of the hydrodynamics in drip emitters

{\rm Re}\sim 130

3D CFD modeling and experimental characterization of HT PEM fuel cells at different anode gas compositions

Re ∼130. The fluid-dynamic wake structure and stability are investigated by means of PSD analyses of the velocity components and by visual inspection of the vortical coherent structure evolution. Moreover, the energy dissipation of the flow is assessed by considering an equivalent discharge coefficient

Heterogeneous catalysis in pulsed-flow reactors with nanoporous gold hollow spheres

C_{d}^{\ast}

Direct Numerical Simulation of SCR Reactors through Kinetic Approach

Cd*, which measures the total pressure losses of the flow moving around the various layout under investigation. Outcomes from our study demonstrate that the helical ridges augment energy dissipation, but might also have a role in the passive control of the characteristic frequencies of the unsteady wake flow.Graphical abstract

Simulating Engineering Flows through Complex Porous Media via the Lattice Boltzmann Method

In this paper, we propose a fast and efficient numerical technique based on the Lattice Boltzmann method (LBM) to model the flow through a reference drip emitter geometry. The aim of the study is to demonstrate the applicability of the LBM as a reliable simulation tool for the hydraulic optimisation of irrigation systems. Results for the water flow through a rectangular drip emitter are in good agreement with literature numerical and experimental data. Furthermore, we demonstrate the feasibility of the proposed model to simulate a multi-component flow that could be used to simulate the presence of additives, contaminants, and suspended particles.