...Yingying Hu; Francesco Romanò; James B. Grotberg We study the effects of surface tension and yield stress on mucus plug rupture. A three-dimensional simplified configuration is employed to simulate mucus plug rupture in a collapsed lung airway of the tenth generation. The Herschel–Bulkley model...

.... In this study, we used computational fluid dynamics to investigate how gravity, inertia, and surface tension influence both microbubble flow patterns in bifurcating airways and the magnitude/distribution of hydrodynamic stresses on the airway wall. Direct interface tracking and finite element techniques were...

... tissue in ductal rings, septal tissue properties, and surface tension-surface area characteristics of surfactant. To test this hypothesis, we have extended the well-known structural model of the alveolar duct by Wilson and Bachofen (1982, “A Model for Mechanical Structure of the Alveolar Duct,” J. Appl...

... that the formulation is able to model aggregates of several hundred cells without difficulty. Simulations carried out using this formulation suggest new experimental approaches for measuring cell surface tensions and interfacial tensions. The formulation holds promise as a tool for gaining insight into the mechanics...

... procedure of the therapy is investigated by direct numerical simulations. The nonlinear, multiphase, computational model is comprised of an ideal gas bubble surrounded by liquid inside a long tube. Convective and unsteady inertia, viscosity, and surface tension affect the bubble dynamics and are included...

... . Manuscript received by the Bioengineering Division May 19, 2003; revision received November 18, 2003. Associate Editor: A. Yoganathan. 19 May 2003 18 November 2003 27 09 2004 biotransport surface tension lung biomechanics physiological models pneumodynamics biochemistry...

... uniformity and assume that the liquid wets the tube wall with zero contact angle. Non-zero surface tension has a profound effect on the tube’s quasi-steady inflation-deflation characteristics. At low liquid volumes, hysteresis arises through two distinct mechanisms, depending on the buckling wavenumber...

.... A. , Pfleger , C. M. , Forgacs , G. , and Steinberg , M. S. , 1996 , “ Surface Tensions of Embryonic Tissues...

...Wei Huang; Raghbir S. Bhullar; Yuan Cheng Fung In tissue, medical, or dental engineering, when blood comes into contact with a new artificial material, the flow may be influenced by surface tension between the blood and the surface of the material. The effect of surface tension on the flow of blood...

... surfactants biodiffusion physiological models surface tension adsorption Surface Tension Dynamic Model Surfactometer Diffusion Adsorption The behavior of surfactant in the lung is frequently characterized in vitro using a bubble surfactometer 1 2 3 4 . In such a device, a small...

... cellular biophysics aggregation finite element analysis biomechanics digital simulation surface tension biological tissues adhesion Cytoskeletal Mechanics Cell Sorting Tissue Envelopment Checkerboard-Pattern Formation Cell–Cell Adhesions Computer Simulations Finite Element Method...

...E. Denny; R. C. Schroter A study is conducted into the oscillatory behavior of a finite element model of an alveolar duct. Its load-bearing components consist of a network of elastin and collagen fibers and surface tension acting over the air–liquid interfaces. The tissue is simulated using a visco...