Zahra Hosseini

Machine Learning for Feature Identification and Characterization of Fluid Flow Around a Cylinder Using Airborne Acoustic Signature

Zahra Hosseini, Arman Mohseni

This study employs machine learning (random forest, adaptive boosting, and multilayer perceptron) to identify flow features around a cylinder using airborne acoustic signatures. Acoustic data, including sound pressure levels, are derived from numerical simulations. The studied machine learning models effectively distinguish between …

ir (code pays fourni par la source)

Micromechanical modeling of hydrogen, dislocation, and short-range ordering interactions for austenitic steels

Zahra Hosseini, Kshitij Vijayvargia, Mohsen Dadfarnia, Brian P. Somerday et autres

Abstract Austenitic stainless steels are a hydrogen compatible class of materials but they are expensive and have lower yield strength in comparison to ferritic systems. Decades of experimental investigation have revealed that fracture of these steels in hydrogen is advanced by hydrogen …

us, jp, it (code pays fourni par la source)

Spatio-Temporal Oriented Gradient (STOG) Filtering for Ultrasound Localization Microscopy: Preserving Slow and Fast Flow Components

Yutaek Seo, Zahra Hosseini, Kang Kim, Jungyul Park et autres

Ultrasound Localization Microscopy (ULM) enables super-resolution vascular imaging but depends heavily on clutter filtering. Conventional Singular Value Decomposition (SVD) struggles to distinguish slow microvascular flows from static tissue, often suppressing diagnostically important signals. We propose a Spatio-Temporal Oriented Gradient (STOG) filter that …

kr, us (code pays fourni par la source)

Mechanistic model for hydrogen accelerated fatigue crack growth in a low carbon steel

Zahra Hosseini, Mohsen Dadfarnia, Masanobu KUBOTA, Akihide Nagao et autres

jp, us (code pays fourni par la source)

A Fully Resolved Computational Fluid Dynamics Study of the Boundary Layer Flow of an Aqueous Nanoliquid Comprising Gyrotactic Microorganisms over a Stretching Sheet: The Validity of Conventional Similarity Models

Zahra Hosseini, Awatef Abidi, Sajad Mohammadi, S.A.M. Mehryan et autres

When materials are processed in the form of sheets that are stretched, cooling is often required. Coolants have been developed to maximize the rate of heat transfer away from the sheet, including by adding nanoparticles and microorganisms to control the physical properties …

Tunisie, sa, ir, se (code pays fourni par la source)

Modeling the Hydrogen Effect on the Constitutive Response of a Low Carbon Steel in Cyclic Loading

Zahra Hosseini, Mohsen Dadfarnia, Akihide Nagao, Masanobu KUBOTA et autres

Abstract Hydrogen-accelerated fatigue crack growth is a most severe manifestation of hydrogen embrittlement. A mechanistic and predictive model is still lacking partly due to the lack of a descriptive constitutive model of the hydrogen/material interaction at the macroscale under cyclic loading. Such …

jp, us (code pays fourni par la source)

Dynamical modeling and thermo-economic optimization of a cold room assisted vapor-compression refrigeration cycle

Hassan Hajabdollahi, Zahra Hosseini

A cold room assisted vapor-compression refrigeration cycle is dynamically modeled in a year and optimized. Total annual cost (TACO) and coefficient of performance (COP) are selected as two objective functions. Both cold room and refrigeration cycle parameters are considered as design variables. …

ir (code pays fourni par la source)

On the theoretical modeling of fatigue crack growth

Zahra Hosseini, Mohsen Dadfarnia, Brian P. Somerday, Petros Sofronis et autres

jp, us (code pays fourni par la source)

Trapping Against Hydrogen Embrittlement

Zahra Hosseini, Mohsen Dadfarnia, Kevin A. Nibur, Brian P. Somerday et autres

Petrochemical pressure vessels operating in high pressure H2 at high temperature suffer from hydrogen embrittlement (HE) during repressurization after shutdown cooling to ambient temperature. HE may be mitigated by introduction of hydrogen (H) traps in the steel microstructure to suppress accumulation of …

Modal energy flow analysis of a highly modulated wake behind a wall-mounted pyramid

Zahra Hosseini, Robert J. Martinuzzi, Bernd R. Noack

We experimentally investigate the highly modulated turbulent wake behind a wall-mounted square-base pyramid protruding through the boundary layer. We present the first modal energy flow analysis of a time-resolved three-dimensional velocity field from experimental particle image velocimetry data. The underlying low-order representation …

ca, fr, de (code pays fourni par la source)

Three-Dimensional Instabilities in the Wake of a Wall-Mounted Low-Aspect-Ratio Pyramid

Zahra Hosseini, Robert J. Martinuzzi

ca (code pays fourni par la source)

Modal Energy Flow Analysis the Highly Modulated Wake of a Wall-mounted Square-based Pyramid

Robert J. Martinuzzi, Zahra Hosseini, Bernd R. Noack