DESCRIPTION A 25-year-old man presented with worsening dyspnoea on exertion of 5 months duration along with two episodes of thromboembolic stroke to the left side of the body over a span of the last 2 months. The patient had a history suggestive of rheumatic heart disease. On cardiac auscultation, a long rumbling mid-diastolic murmur was heard. ECG showed atrial fibrillation. Chest roentgenogra...

We present experimental observations of the spatial distribution large inertial particles suspended in a turbulent swirling flow at high Reynolds number. The plastic are heavier than working fluid so that their dynamics results from competition between gravitation and agitation. Two suspension regimes observed. At low rotation rate confined near bottom for any size or density. rate, loosely con...

Understanding the flow fields at the micro-scale is key to developing methods of success-fully mixing fluids for micro-scale applications. This paper investigates flow characteristics and mixing efficiency of three different geometries in micro-channels. The geometries of these channels were rectangular with a dimension of; 300 m wide, 100 m deep and 50 mm long. In first channel there was no ob...

dense medium cyclone is a high capacity device that is widely used in coal preparation. it is simple in design but the swirling turbulent flow, the presence of medium and coal with different density and size fraction and the presence of the air-core make the flow pattern in dmcs complex. in this article the flow pattern simulation of dmc is performed with computational fluid dynamics and fluent...

One-dimensional stability analysis of a hydraulic system composed of a penstock, a runner, and a draft tube was carried out to determine the cause of the full load draft tube surge. It is assumed that the cavity volume at the runner exit is a function of the pressure at the vortex core evaluated from the instantaneous local pressure at the runner exit and an additional pressure decrease due to ...