122 citations · 1.4k across the 76 of their papers we have counts for
45 papers · 1 filter
Comment on "Note on the start-up of Couette flow for viscoelastic fluids" [Phys. Fluids 35, 113108 (2023)]
Ivan C. Christov
I show that the initial conditions imposed by Balan [Phys. Fluids 35, 113108 (2023)] are incompatible with a nonzero retardation time, so that the problem solved is not impulsive s…
Variational Acoustics
Md Mahmudur Rahman, Ivan C. Christov
Many variational principles for acoustics have appeared in the literature, often introduced in an \textit{ad hoc} manner by picking and choosing terms in a Lagrangian density to yi…
Flow in a porous non-axisymmetric annular conduit: Coupling wall compliance and peristalsis
Nishanth Surianarayanan, Ivan C. Christov
Coenen \textit{et al.}\ (\textit{J. Fluid Mech.}, vol.~921, 2021, p.~R2) developed a reduced-order model of peristaltic pumping in non-axisymmetric annular conduits with rigid wall…
Correlations for the Interphase Drag in the Two-Fluid Model of Gas--Liquid Flows through Packed-Bed Reactors
Pranay P. Nagrani, Amy M. Marconnet, Ivan C. Christov
Experiments conducted by NASA measured the pressure drop due to gas--liquid flow through a packed-bed reactor under microgravity conditions. From these experiments, we develop corr…
Reciprocal theorem for calculating the flow rate of oscillatory channel flows
Shrihari D. Pande, Evgeniy Boyko, Ivan C. Christov
We demonstrate the use of the Lorentz reciprocal theorem in obtaining corrections to the steady flow rate due to flow oscillations in rigid channels. Starting from the unsteady Sto…
Hydrodynamics of bubble flow through a porous medium with applications to packed bed reactors
Pranay P. Nagrani, Amy M. Marconnet, Ivan C. Christov
Gas-liquid flows through packed bed reactors (PBRs) are challenging to predict due to the tortuous flow paths that fluid interfaces must traverse. Experiments at the International…