Fluids have fascinated many generations of scientists and engineers. Although a considerable amount of research has been devoted to the study of uids of low molecular weight (well described by the Navier-Stokes equations), ...

Multiparticle collision dynamics (MPCD) is a particle based mesoscopic simulation technique for incorporating hydrodynamics and thermal fluctuations in complex fluid simulations. Due to its simplicity, theMPCD algorithm ...

High fidelity aerodynamic shape optimization using the adjoint method for gradient calculation is presented for an aircraft wing with particular emphasis on designing wings for propeller-driven aircraft with lower induced ...

Differential operators such as gradient, curl, laplacian and divergence used in vector algebra follow certain identities and symmetries, which often is absent in their discrete counterpart. For example, the laplacian ...

We study the merger of three or more identical co-rotating vortices initially arranged on the vertices of a regular polygon, and compare it to the merger of two like-signed vortices. The latter is a well-studied problem, ...

Turbulence can be defined as that state of matter characterized by a loss of coherence in space and time, as a result of the non-linear interaction of a large number of degrees of freedom, in excess of billions even for ...

A granular material is a conglomeration of discrete macroscopic (>1 mm in size) solid particles or grains. Granular materials are commonplace in nature and industry. According to Richard et al. (2005), “Granular materials ...

In this thesis, we report results from laboratory experiments conducted to study mantle convection. Mantle convection corresponds to a regime of high Rayleigh and Prandtl numbers. In this chapter, we first give a introduaction ...

Granular materials are conglomerations of discrete macroscopic particles, which are ubiquitous in our daily lives, whose size can vary from 1 mm to meters to kilometres. They play an important role in applications as ...

Buoyancy drives many flows in nature as well as in industrial processes. It drives the climate - it plays an important role in the vertical transport of heat and water vapour. Buoyancy also acts as a restoring force in ...