From the visualization results: (1) Mixing in the region of the venturi tube and throttle valve was influenced by the throttle opening and by the distance of the nozzle and valve, and in addition, in this region natural gas behavior shows many different flow patterns. (2) The mixing (...
In shock bubble interaction (SBI), the baroclinic vorticity generated by misalignment of pressure and density gradient will lead to flow instability which promotes the mixing between the bubbles and surrounding gas. A numerical study on the flow and mixing of shock-accelerated elliptic helium cylinder...
In a straight cylindrical pipe of radius a and length L, the equation becomes a hydraulic equivalent of Ohm’s law: [6.1.2]QV=ΔPR where R is the equivalent resistance to gas flow through the airways. These equations are identical to those we use in cardiovascular physiology (see Unit 5...
The inspiratory flow generation in standard critical care ventilators can be based on several different mechanisms. The vast majority of mechanical ventilators comprises a proportional valve and a mixing chamber15. However, manufacturing of ventilators using this technical solution requires custom made pneum...
with her distance and near vision; she was referred to our retina clinic for evaluation. At the timeof this writing, the patient was asymptomatic with best-corrected visual of CSHRPE have beendescribed, and only one case reported optical coherence tomography characteristics. Keywords...
Welding fumes induce lung toxicity and are carcinogenic to humans but the molecular mechanisms have yet to be clarified. The aim of this study was to evaluate the toxicity of stainless and mild steel particles generated via gas–metal arc welding using p
to a 5 SLPM unit as well as a 50 SLPM unit, allowing for a total possible Argon flow of 55 SLPM. Depending on the instantaneous requirement for Argon in the mixture, MXM will choose to utilize either (or both) controllers to meet the demand, with the best accuracy and control possible...
Sinusoidal volume changes were through the tube by a piston pump ventilator, driven by a linear motor (Hummingbird High Frequency Oscillator, Senko Medical Products, Tokyo, Japan). 64 OPTIMAL f, V,, AND PawDURING HFOV 65 A high impedance bias flow (6 L/m) supplied fresh humidified gas. ...
The practical actions referred to as stirring, mixing, and blending, and so on rely on the ability to produce stochastic trajectories of particles within g... Aref,Hassan - 《Physics of Fluids A Fluid Dynamics》 被引量: 72发表: 1991年 Steady flow of Burgers' nanofluid over a stretching sur...
In total we detected six mechanisms that facilitate gas exchange during HFOV: (i) turbulent vortices in large airways; (ii) asymmetric in- and expiratory flow profiles; (iii) radial mixing in main bronchi; (iv) laminar flow in higher generations of the respiratory tract; (v) pendelluft; (...