Physics of Fluids, Volume 35, Issue 4, April 2023. We present an experimental study on the effects of polymer additives on the entrainment of a circular water jet and their dependence on the polymer concentration [math] (in the range of 0–40 ppm) and W…
Physics of Fluids, Volume 35, Issue 4, April 2023. A phase proper orthogonal decomposition (phase POD) method is demonstrated utilizing phase averaging for the decomposition of spatiotemporal behavior of statistically non-stationary turbulent flows in …
Physics of Fluids, Volume 35, Issue 4, April 2023. We study the effect of spin ([math]) of a cylinder, placed in uniform flow, on the transition of the boundary layer. Large Eddy Simulation, with the Sigma turbulence model to account for the sub-grid s…
Physics of Fluids, Volume 35, Issue 4, April 2023. Stall is a common phenomenon in centrifugal pumps under low-flow conditions; it has a significant impact on fatigue and can even damage mechanical structural components. Computational fluid dynamics wa…
Physics of Fluids, Volume 35, Issue 4, April 2023. Vortex-induced vibration of twin tandem square cylinders at an inclined angle of 45° to the fluid, i.e., twin diamond cylinders of mass ratio m* = 3, is numerically investigated at Reynolds number Re =…
Physics of Fluids, Volume 35, Issue 4, April 2023. We carry out a numerical study on the dynamics of a single non-Brownian flexible fiber in two-dimensional confined simple shear (Couette) flows at finite Reynolds numbers. We employ the bead-spring mod…
Physics of Fluids, Volume 35, Issue 4, April 2023. A fluid droplet, in general, deforms if subject to active driving, such as a finite slip velocity or active tractions on its interface. Starting from Stokes equations, we show that these deformations a…
Physics of Fluids, Volume 35, Issue 4, April 2023. A shallow water model that incorporates surface tension and electric field effects is developed to investigate the dynamics of an electrified liquid surface. The computational model is verified against…
Physics of Fluids, Volume 35, Issue 4, April 2023. To explain the phenomenon observed in previous experiments of kerosene-ignition failure in scramjet combustors as the kerosene temperature increases, we numerically investigate the mixing characteristi…
Physics of Fluids, Volume 35, Issue 4, April 2023. The transport phenomena of [math] type reactive miscible front undergoing radial displacement in a porous medium are numerically investigated. For a stable displacement when the viscosity of fluids A, …