We derive a theorem for the lower bound on energy dissipation rate by rigid surface-driven active microswimmer of arbitrary shape in fluid at low Reynolds number. show that, any swimmer, minimum given velocity can be expressed terms resistance tensors two passive bodies same with no-slip and perfect-slip boundary. To achieve absolute dissipation, optimal swimmer needs surface profile that corre...

The best known analytical model of swimming was originally developed by Lighthill and is known as large amplitude elongated body theory (LAEBT). Recently, this theory has been improved and adapted to robotics through a series of studies [Boyer et al., 2008, 2010; Candelier et al., 2011] ranging from hydrodynamic modelling to mobile multibody system dynamics. This article marks a further step to...

In 1992, experts at the National Science Foundation Workshop titled "Low-Frequency Electrical Precursors to Earthquakes: Fact or Fiction?" concluded that "seismic electric signals observed in Greece are generated in the Earth, and the apparent correlation with earthquakes is promising" [Park, 1992]. On March 5 and 26,1993, strong earthquakes hit Pirgos City, Greece. Despite heavy damage, there ...

Turbulence statistics that are relevant to jet noise modeling but difficult to measure in experiments are computed using a previously validated simulation database of a Mach 0.9 cold jet. Initial focus is on fourth-order statistics that are at the core of acoustic analogy based models built on both the Lilley and Lighthill equations. Common simplifications of fourth-order correlations based on ...

We propose and study a nonlocal conservation law modelling traffic flow in the existence of inter-vehicle communication. It is assumed that information travels at finite speed model involves space-time integral weighted density. The well-posedness established under suitable conditions on parameters by suitably-defined initial condition. In special case where weight kernel an exponential functio...

A recently introduced scheme for networked conservation laws is analyzed in various experiments. The makes use of a novel relaxation approach that governs the coupling conditions network and does not require solution Riemann problem at nodes. We numerically compare dynamics obtained by to solutions using classical condition. In particular, we investigate case two outgoing edges Lighthill–Whitha...

Traffic jams are common in developing countries. This is generally caused by traffic density, road conditions, and the driver's personality. phenomenon can be simulated using a mathematical model, allowing it to seen how these factors affect conditions. The goal of this study simulate effect density conditions Lighthill-Whitham-Richard (LWR) model. model used describe macroscopic flow which aff...

Abstract We propose a neural network approach to model general interaction dynamics and an adjoint-based stochastic gradient descent algorithm calibrate its parameters. The parameter calibration problem is considered as optimal control that investigated from theoretical numerical point of view. prove the existence controls, derive corresponding first-order optimality system formulate identify p...