99 citations · 225 across the 15 of their papers we have counts for
15 papers
Turbulence anisotropy in a bubbly vertical channel flow with topological change
Arturo A. Arosemena, Davide Procacci, Simone Di Giorgio +2
High-fidelity numerical simulations of bubble-laden, vertical channel flow in the upward configuration, where the bubbles undergo topological changes (breakup and coalescence), wer…
A universal diffuse interface modeling framework for surfactants
Shahab Mirjalili, Mathieu Bignolles
We propose a universal diffuse-interface modeling framework for surfactant transport in two-phase flows, applicable to all solubility scenarios and to any conservative phase field…
Solid adsorption: the missing mechanism for surfactant contact lines -- a phase-field approach
Parvathy K. Kannan, Kazi T. Iqbal, Diego Díaz +5
We develop a thermodynamically consistent phase-field model for soluble surfactants in two-phase flows, incorporating both interfacial and solid surface adsorption. The model is de…
An LES model with finite-rate phase change and subgrid spray based on a thermodynamically consistent four-equation multiphase model
Henry Collis, Shahab Mirjalili, Makrand Khanwale +2
In this work, an LES model with finite-rate phase change and subgrid spray based on a high-resolution numerical scheme for multiphase multi-component simulations which satisfies in…
Convolutional autoencoders for the reconstruction of three-dimensional interfacial multiphase flows
Murray Cutforth, Shahab Mirjalili
We present a systematic investigation of convolutional autoencoders for the reduced-order representation of three-dimensional interfacial multiphase flows. Focusing on the reconstr…
A thermodynamically consistent and robust four-equation model for multi-phase multi-component compressible flows using ENO-type schemes including interface regularization
Henry Collis, Deniz A. Bezgin, Shahab Mirjalili +1
In this work, a concise and robust computational framework is proposed to simulate compressible multi-phase multi-component flows. To handle both shocks and material interfaces, a…
A mass-conserving contact line treatment for second-order conservative phase field methods based on the generalized Navier boundary condition
Reed L. Brown, Shahab Mirjalili, Makrand A. Khanwale +1
A mass-conserving contact line treatment for second-order conservative phase field methods is presented and applied to the conservative diffuse interface (CDI) model. The treatment…
Diffuse interface treatment in generalized curvilinear coordinates with grid-adapting interface thickness
Henry Collis, Shahab Mirjalili, Ali Mani
A general approach for transforming phase field equations into generalized curvilinear coordinates is proposed in this work. The proposed transformation can be applied to isotropic…
Inverse asymptotic treatment: capturing discontinuities in fluid flows via equation modification
Shahab Mirjalili, Søren Taverniers, Henry Collis +2
A major challenge in developing accurate and robust numerical solutions to multi-physics problems is to correctly model evolving discontinuities in field quantities, which manifest…
Spectral analysis of multidimensional current-driven plasma instabilities and turbulence in hollow cathode plumes
Wai Hong Ronald Chan, Ken Hara, Jonathan M. Wang +3
Large-amplitude current-driven instabilities in hollow cathode plumes can generate energetic ions responsible for cathode sputtering and spacecraft degradation. A 2D2V (two dimensi…
Assessment of an energy-based surface tension model for simulation of two-phase flows using second-order phase field methods
Shahab Mirjalili, Makrand A Khanwale, Ali Mani
Second-order phase field models have emerged as an attractive option for capturing the advection of interfaces in two-phase flows. Prior to these, state-of-the-art models based on…
Consistent, energy-conserving momentum transport for simulations of two-phase flows using the phase field equations
Shahab Mirjalili, Ali Mani
Realistic two-phase flow problems of interest often involve high flows with high density ratios. Accurate and robust simulation of such problems requires special treatments. I…
High Fidelity Simulations of Micro-Bubble Shedding from Retracting Thin Gas Films in the Context of Liquid-Liquid Impact
Shahab Mirjalili, Wai Hong Ronald Chan, Ali Mani
Micro-bubbles are of significant interest due to the long-living signature they leave behind naval ships. In order to numerically model and predict these bubbles in naval applicati…
Comparison between the diffuse interface and volume of fluid methods for simulating two-phase flows
Shahab Mirjalili, Christopher Blake Ivey, Ali Mani
A wide variety of interface capturing methods have been introduced for simulating two-phase flows throughout the years. However, there is a noticeable dearth of literature focusing…
A conservative diffuse interface method for two-phase flows with provable boundedness properties
Shahab Mirjalili, Christopher B. Ivey, Ali Mani
Central finite difference schemes have long been avoided in the context of two-phase flows for the advection of the phase indicator function due to numerical overshoots and undersh…