71 citations · 161 across the 22 of their papers we have counts for
24 papers
Spatiotemporal Oscillations Driven by Spatial Heterogeneity and Growth
Lewis S. Mosby, Mohit P. Dalwadi, Zena Hadjivasiliou
Temporal oscillations arise naturally in biological systems with feedback loops or explicit delays. When incorporating spatial effects, the travel times of propagating signals can…
A nonlinear theory for chemotactic fronts of mixed populations
Giulia L. Celora, Marjorie Watts, Carles Falcó +1
Collective migration of heterogeneous cell populations is central to many biological and physiological processes, including development and immune response. Recent experimental and…
Bacterial adhesion to curved surfaces in fluid flow
Edwina F. Yeo, Benjamin J. Walker, Philip Pearce +1
Minimising bacterial surface adhesion and subsequent biofilm formation in industrial and medical settings requires understanding how bacteria are transported and adhere to complex…
Far-field approximations for multi-timescale microswimmers near a boundary
Sara Drummond-Curtis, Mohit P. Dalwadi, Benjamin J. Walker
Hydrodynamic interactions with boundaries can significantly affect the trajectories of microscale swimmers. In simple swimmer models, a common assumption is that swimmer shape rema…
Modelling Intermediate-Current Transitions in Asymmetric-Valence Binary Electrolytes
Georgina C. Ryan, Mohit P. Dalwadi, Ian M. Griffiths
Asymmetric valences in a binary electrolyte can significantly affect the performance of systems such as reverse electrodialysis cells, batteries, and supercapacitors. To generate a…
Theory of adhesion-driven self-organisation in growing tissues
Carles Falcó, Samuel W. S. Johnson, Mohit P. Dalwadi +1
Cell invasion and spatial pattern formation are two distinct manifestations of cellular self-organisation in development, regeneration, and disease. Here, we develop and analyse a…
A multiscale discrete-to-continuum framework for structured population models
Eleonora Agostinelli, Keith L. Chambers, Helen M. Byrne +1
Mathematical models of biological populations commonly use discrete structure classes to capture trait variation among individuals (e.g. age, size, phenotype, intracellular state).…
Chemotaxis of cell aggregates: morphology and dynamics of migrating active droplets
Giulia L. Celora, Benjamin J. Walker, Mohit P. Dalwadi +1
Biological tissues have been observed to display emergent fluid-like properties, owing to physical interactions between cells. However, it remains unclear in general how these flui…
A Weakly Nonlinear Theory for Pattern Formation in Structured Models with Localized Solutions
Wesley J. M. Ridgway, Mohit P. Dalwadi, Philip Pearce +1
Structured models, such as PDEs structured by age or phenotype, provide a setting to study pattern formation in heterogeneous populations. Classical tools to quantify the emergence…
Effective permeability conditions for diffusive transport through impermeable membranes with gaps
Molly Brennan, Edwina F. Yeo, Philip Pearce +1
Membranes regulate transport in a wide variety of industrial and biological applications. The microscale geometry of the membrane can significantly affect overall transport through…
A shear-induced limit on bacterial surface adhesion in fluid flow
Edwina F. Yeo, Benjamin J. Walker, Philip Pearce +1
Controlling bacterial surface adhesion and subsequent biofilm formation in fluid systems is crucial for the safety and efficacy of medical and industrial processes. Here, we theore…
Integral Asymptotics, Coalescing Saddles, and Multiple-scales Analysis of a Generalised Swift-Hohenberg Equation
Václav Klika, Mohit P. Dalwadi, Andrew L. Krause +1
Integral asymptotics play an important role in the analysis of differential equations and in a variety of other settings. In this work, we apply an integral asymptotics approach to…
A homogenised model for dispersive transport and sorption in a heterogeneous porous medium
Lucy C Auton, Mohit P. Dalwadi, Ian M. Griffiths
When a fluid carrying a passive solute flows quickly through porous media, three key macroscale transport mechanisms occur. These mechanisms are diffusion, advection and dispersion…
Rapidly yawing spheroids in viscous shear flow: Emergent loss of symmetry
Mohit P. Dalwadi
We investigate the emergent three-dimensional (3D) dynamics of a rapidly yawing spheroidal swimmer interacting with a viscous shear flow. We show that the rapid yawing generates no…
An agent-based modelling framework to study growth mechanisms in EGFR-L858R mutant alveolar type II cells
Helena Coggan, Clare E. Weeden, Philip Pearce +4
Mutations in the epidermal growth factor receptor (EGFR) are common in non-small cell lung cancer (NSCLC), particularly in never-smoker patients. However, these mutations are not a…
Generalised Jeffery's equations for rapidly spinning particles. Part 1: Spheroids
Mohit P. Dalwadi, Clément Moreau, Eamonn A. Gaffney +2
The observed behaviour of passive objects in simple flows can be surprisingly intricate, and is complicated further by object activity. Inspired by the motility of bacterial swimme…
Generalised Jeffery's equations for rapidly spinning particles. Part 2: Helicoidal objects with chirality
Mohit P. Dalwadi, Clément Moreau, Eamonn A. Gaffney +2
In this two-part study, we investigate the motion of rigid, active objects in shear Stokes flow, focusing on bodies that induce rapid rotation as part of their activity. In Part 2,…
Emergent rheotaxis of shape-changing swimmers in Poiseuille flow
Benjamin J. Walker, Kenta Ishimoto, Clément Moreau +2
A simple model for the motion of shape-changing swimmers in Poiseuille flow was recently proposed and numerically explored by Omori et al. (2022). These explorations hinted that a…
The effects of rapid yawing on simple swimmer models and planar Jeffery's orbits
Benjamin J. Walker, Kenta Ishimoto, Eamonn A. Gaffney +2
Over a sufficiently long period of time, or from an appropriate distance, the motion of many swimmers can appear smooth, with their trajectories appearing almost ballistic in natur…
A homogenised model for flow, transport and sorption in a heterogeneous porous medium
Lucy C. Auton, Satyajit Pramanik, Mohit P. Dalwadi +2
A major challenge in flow through porous media is to better understand the link between microstructure and macroscale flow and transport. For idealised microstructures, the mathema…
Optimising the flow through a concertinaed filtration membrane
Victoria E. Pereira, Mohit P. Dalwadi, Enrique Ruiz-Trejo +1
Membrane filtration is a vital industrial process, with applications including air purification and blood filtration. In this paper, we study the optimal design for a concertinaed…
A multiscale method to calculate filter blockage
Mohit. P. Dalwadi, Maria Bruna, Ian M. Griffiths
Filters that act by adsorbing contaminant onto their pore walls will experience a decrease in porosity over time, and may eventually block. As adsorption will generally be larger t…
On the boundary layer structure near a highly permeable porous interface
Mohit P. Dalwadi, S. Jonathan Chapman, Sarah L. Waters +1
The method of matched asymptotic expansions is used to study the canonical problem of steady laminar flow through a narrow two-dimensional channel blocked by a tight-fitting finite…
Understanding how porosity gradients can make a better filter using homogenization theory
Mohit P. Dalwadi, Ian M. Griffiths, Maria Bruna
Filters whose porosity decreases with depth are often more efficient at removing solute from a fluid than filters with a uniform porosity. We investigate this phenomenon via an ext…