A mathematical model describing dynamics of the cluster of gas bubbles in an acoustic field is presented. According to this model a cluster is considered as a large drop with microbubbles inside. The proposed model is used as a basis (1) for an analytical study of small bubble oscillations in mono- and polydisperse clusters and (2) for numerical investigations of nonlinear bubble oscillations a...

In this study, a model of Bayesian Dynamic Stochastic General Equilibrium (DSGE) from Real Business Cycles (RBC) approach with the aim of identifying the factors shaping price bubbles of Tehran Stock Exchange (TSE) was specified. The above-mentioned model was conducted in two scenarios. In the first scenario, the baseline model with sentiment shock was examined. In this model, stock price bubbl...

In this study, at the first stage, the rupture criterion of bubbles wall in Aluminum metal foam liquid was investigated by using Lattice Boltzmann. The two phases modeling were accomplished by using a modified Shan-Chen model. This model was run for several bubbles in A356+3wt.%SiC melt system. Then, bubbles morphologies (virtual metallographic) for A356+3wt.%SiC foams were simulated. Results s...

Bakery products such as breads are characterized by a typical porous structure and a high specific volume. To obtain such a porous structure, air bubbles have to be incorporated during a mixing or blending step. Gas retention and final volume of the baked good depend, therefore, to a large extent on how fast these bubbles disappear again by one of the following processes: Buoyancy is the proces...

My research on bubbles started with my book “Asymmetric Information: Bubbles, Crashes, Technical Analysis and Herding” (Oxford University Press, 2001). The book surveys and critiques the literature on bubbles and herding in settings in which different investors hold different information. One conclusion of the book is that it is difficult to obtain bubbles in models in which all market particip...

My research on bubbles started with my book “Asymmetric Information: Bubbles, Crashes, Technical Analysis and Herding” (Oxford University Press, 2001). The book surveys and critiques the literature on bubbles and herding in settings in which different investors hold different information. One conclusion of the book is that it is difficult to obtain bubbles in models in which all market particip...

Experiments reported herein document heterogeneous crystal nucleation on bubbles in supercooled lithium disilicate melt. Crystalline lithium disilicate (Li2Si2O5) nucleated and grew on small bubbles (;1 mm) with a one-to-one correspondence between the number of bubbles and crystals (ranging from ,102 to ;105 bubbles/mm3). Crystals grew on large bubbles (.100 mm) only in samples fused in N2, sug...