A5052112601- Fluid Dynamics and Heat Transfer
- Surface Modification and Superhydrophobicity
- Lattice Boltzmann Simulation Studies
- Fluid Dynamics and Turbulent Flows
- Electrohydrodynamics and Fluid Dynamics
- Plant Surface Properties and Treatments
- Fluid Dynamics Simulations and Interactions
- Wave and Wind Energy Systems
- Advanced Combustion Engine Technologies
- Particle Dynamics in Fluid Flows
- Aerodynamics and Acoustics in Jet Flows
- Computational Fluid Dynamics and Aerodynamics
- Fluid Dynamics and Thin Films
- Advanced Numerical Methods in Computational Mathematics
- Oil Spill Detection and Mitigation
- Combustion and flame dynamics
- Biodiesel Production and Applications
- Icing and De-icing Technologies
- Inhalation and Respiratory Drug Delivery
- nanoparticles nucleation surface interactions
- Respiratory Support and Mechanisms
- Fluid Dynamics and Vibration Analysis
- Computer Graphics and Visualization Techniques
- Rheology and Fluid Dynamics Studies
- Combustion and Detonation Processes
University of Massachusetts Dartmouth
2016-2025
University of Toronto
2004-2010
This work presents a machine learning (ML) approach to volume-tracking for computational simulations of multiphase flow. It is an alternative commonly used procedure in the volume-of-fluid (VOF) method volume tracking, which phase interfaces are reconstructed flux calculation followed by advection. Bypassing computationally expensive steps interface reconstruction and calculation, proposed ML performs advection single step, directly predicting fractions at next time step. The function...
Abstract We present an implementation of Hysing's ( Int. J. Numer. Meth. Fluids 2006; 51 :659–672) semi‐implicit method for treating surface tension, finite volume models interfacial flows. Using this method, the tension timestep restriction, which is often very stringent, can be exceeded by at least a factor 5 without destabilizing solution. The force in consists explicit part, regular continuum force, and implicit part represents diffusion velocities induced on fluids interfaces. applied...
This work investigates surface impingement of monodispersed diesel drop trains using computational simulations. The three-dimensional simulations include high-speed impact micrometer-sized fuel drops onto initially dry and wetted stainless steel substrates. size velocity are representative injection conditions in internal combustion engines (ICEs). serve as a simplified representation spray. To accurately capture the film that naturally develops on substrates, dynamic diesel-stainless...
Although the longevity of superhydrophobic surface (SHS) induced by diffusive gas transfer has been extensively studied, scaling relation between SHS and undersaturation level liquid is still an open question. In this study, we address question performing experiments where plastron decay visualized a nonintrusive optical technique based on light reflection, diffusion introduced using with low dissolved concentrations, measured status entire surface. We find that (tf) follows relation: tf ∼...
A three-dimensional model of droplet impact and solidification has been modified to include the effects density variation during phase change. The governing equations for conservation mass, momentum, energy, a volume-of-fluid (VOF) equation are derived by assuming different but constant solid liquid densities. solved numerically using control-volume approach. is validated against Stefan planar problems. It then applied simulate molten tin in mold also an impacting on substrate.
When a molten metal droplet hits solid plate and freezes, the shape of flattened, solidified splat that is formed depends on temperature plate. Figure 1 shows aluminum splats produced by wire arc spraying, widely used coating process in which an electric struck between tips two continuously fed wires. A high velocity air jet directed at gap wires strips off droplets propels them onto surface being coated. In study from Fig. was taken diameters ranged 16 to 25 μm velocities 100 125 m/s....
The work presented in this article focuses on improving the understanding of spray–wall interaction phenomena and predictivity computational models for modern internal combustion engine–like conditions. Previous from authors highlighted some limitations currently available sub-models, especially those based experimental observations carried out single droplet impingement non-hydrocarbon fluids. direct numerical simulations provided unique qualitative quantitative details that were leveraged...
The feasibility of running MPI-parallel, GPU-accelerated, multiphase flow simulations on Amazon's Elastic Compute Cloud (EC2) service is evaluated as an alternative computational resource. A cloud cluster Amazon EC2 compared to a conventional local high-performance computing in terms performance and cost. steps necessary set up acquire the appropriate hardware software stacks are outlined. incompressible solver benchmarked both clusters by performing strong weak scaling analyses. competitive...
Wave energy converter (WEC) devices harness the renewable ocean wave and convert it into useful forms of energy, e.g. mechanical or electrical. This paper presents an advanced 3D computational framework to study interaction between water waves WEC devices. The tool solves full Navier–Stokes equations considers all important effects impacting device performance. To enable large-scale simulations in fast turnaround times, solver was developed MPI parallel framework. A multigrid preconditioned...