A population balance framework based on high order moment conserving method of classes is extended to capture surfactant dynamics and its effect drop size distributions. The proposed flexible for incorporating various closure models breakage coalescence, mass transfer, physical equilibria between dispersed continuous phase as well adsorption the interface. first schematically explained derived ...

In this paper, we numerically investigate the effects of surfactant on dropdrop interactions in a 2D shear flow using a coupled level-set and immersed interface approach proposed in (Xu et al., J. Comput. Phys., 212 (2006), 590–616). We find that surfactant plays a critical and nontrivial role in drop-drop interactions. In particular, we find that the minimum distance between the drops is a non...

Coalescence of binary supermassive black holes (SBHs) would constitute the strongest sources of gravitational waves to be observed by LISA. While the formation of binary SBHs during galaxy mergers is almost inevitable, coalescence requires that the separation between binary components first drop by a few orders of magnitude, due presumably to interactions of the binary with stars and gas in a g...

INTRODUCTION ILLUSTRATIONS CHAPTER I 1.1 1.2 1.3 COALESCENCE OF DISTILLED WATER DROPS Introduction Experimental Methods Experimental Results a) Dimple stability of water drops b) Effects of relative humidity and Impact velocity on coalescence c) Interference patterns for colliding water ii iii vii 1 1 2 6 6 drops 8 d) Retardation of water drop evaporation 13 e) Electrical effects on dimpling 14...

Simulating droplet coalescence is challenging because small-scale (tens of nanometers) phenomena determine the behavior of much larger (micrometer- to millimeter-scale) droplets. In general, liquid droplets colliding in a liquid medium coalesce when the capillary number is less than a critical value. We present simulations of droplet collisions and coalescence in simple shear flow using the fre...

Adaptive interface-Mesh un-Refinement (AiMuR) based Sharp-Interface Level-Set-Method (SI-LSM) is proposed for both uniform and non-uniform Cartesian-Grid. The AiMuR involves interface location dynamic un-refinement (with merging of the four control volumes) Cartesian grid away from interface. solver only. A detailed numerical methodology presented ghost-fluid method SI-LSM. Advantage novel as c...

This review summarizes a large set of related experimental results about protein adsorption and drop coalescence in emulsions, stabilized by globular milk proteins, beta-lactoglobulin (BLG) or whey protein concentrate (WPC). First, we consider the effect of drop coalescence on the mean drop size, d32, during emulsification. Two regimes of emulsification, surfactant-rich (negligible drop coalesc...