Resources

Author(s): Grant Rydquist and Mahdi Esmaily Algorithms used to calculate red blood cell damage are often constructed empirically from laminar flows, and the extensibility of these algorithms to turbulent flows is an open question. To examine this question, we investigate the effect of turbulent flows on red blood cell damage by simulating individual red blood cells in turbulent channel flow using a multiscale computational framework. The results...

Author(s): Shubhra Sahu, Bapan Mondal, and Somnath Bhattacharyya In this study we have extended the mean-field based model to analyze the layered structure of the electric double layer and found that oscillations in charge density arise in multivalent counterions. Formation of the counterion condensed layer and overscreening creates a larger accumulation of coions in the electric double layer, leading to an electroosmotic flow reversal and attenuation...

Author(s): I. Misra and V. Kumaran The dynamics of a magnetic particle of moment m in an oscillating magnetic field H has a qualitative dependence on the magnetization model. There are sustained oscillations for a particle with a permanent dipole. The particle is static for an induced dipole with no hysteresis. For an induced dipole with hysteresis, there is a transition between oscillations with a magnetic moment oscillating about a particle...

Author(s): Tristan Aurégan, Sylvain Courrech du Pont, and Benjamin Thiria Flexible structures subjected to varying flow conditions are often more resilient than their rigid equivalents. We exploit this bio-inspired strategy, called reconfiguration, to improve the efficiency of a scale model underwater propeller. Using flexible blades that deform passively, we show experimentally that it is possible to program the deformation of the rotor such...

Author(s): Arefe Ghazi Nezami and Blair Anne Johnson Turbulence generated with a random jet array (RJA) can be homogeneous, isotropic, and exhibit negligible mean flow, making it suitable for many applications. However, achieving these characteristics requires a thorough understanding of the turbulence generation process within RJA facilities. In this study, we investigate the evolution of turbulence within an RJA-driven water tank, from its generation...

Author(s): Atul S. Vivek, Ranabir Dey, and Harish N. Dixit As liquid films on solid substrates approach submicron thickness, they tend to become naturally unstable due to the action of long-range dispersion forces. Interestingly, the presence of surfactants and gravitational drainage alters the stability characteristics of these films. Using linear and nonlinear stability analyses in the lubrication limit, we show that draining films containing...

Author(s): Cat Tuong Nguyen and Martin Oberlack A large-scale direct numerical simulation of a spatially evolving turbulent round jet flow has been conducted at a Reynolds number of 3500 based on the orifice diameter and the mean bulk velocity at the orifice. A fully turbulent pipe flow profile is used as the inlet condition, and high-quality statistical data is generated by averaging over 200 washouts of a particle. The present data include statistical...