The Coalescence Mechanism of Multiple Slug Bubbles

Partial coalescence of soap bubbles

The Coalescence of Bubbles - a Numerical Study

The dynamics of bubble coalescence is studied using a robust numerical model for a multiphase flow system with interfaces. The effects of liquid viscosity and surface tension on bubble coalescence, for which Reynolds number ranges from 10 to 100 and Bond number ranges from 5 to 50, are investigated. It is shown that the numerical model used in this study can accurately capture the complex topol...

Evaluation of Multiple Bubbles in the Stock Market of Tehran

عدم تشخیص حباب‌های قیمت دارایی و نوع آن (یگانه و چندگانه) موجب اثرات مخربی بر اقتصاد می‌شود. ابزارهای اقتصادی جدید، نه تنها تحلیل رفتار انفجاری ملایم حباب را ممکن گردانیده؛ بلکه تعیین تاریخ شروع و خاتمه آنها را نیز مهیا کرده است. هدف مطالعه حاضر کشف حباب‌های قیمت بورس اوراق بهادار تهران و شرکت فرابورس ایران و تعیین تاریخ‌های شروع، انفجار و محو کامل حباب در دوره 01/1389 تا 01/1395 است. در این ر...

The dynamics of slug trains in volcanic conduits: Evidence for expansion driven slug coalescence

a University of Sheffield, Dept. of Geography, Winter Street, S10 2TN, United Kingdom b Istituto Nazionale di Geofisica e Vulcanologia, Sezione di Palermo, Via Ugo La Malfa, 153, 90146 Palermo, Italy c School of Geosciences, The University of Sydney, Sydney, NSW 2006, Australia d Lancaster Environment Centre, Lancaster University, Lancaster LA1 4YQ, UK e Department of Earth Sciences, Durham Uni...

Hydrodynamic investigation of multiple rising bubbles using lattice Boltzmann method

Hydrodynamics of multiple rising bubbles as a fundamental two-phase phenomenon is studied numerically by lattice Boltzmann method and using Lee two-phase model. Lee model based on Cahn-Hilliard diffuse interface approach uses potential form of intermolecular forces and isotropic finite difference discretization. This approach is able to avoid parasitic currents and leads to a stable procedure t...