A mathematical model has been developed to investigate the effect of a sprinkler spray on adjacent horizontal smoke venting and in particular the water droplet drag component. The pressure difference across a roof vent and the volumetric flow of smoke vented are determined by considering the interaction between the drag force of the sprinkler spray and the buoyancy of the smoke layer in the spr...

Reports from the Nebraska Tractor Test Laboratory (NTTL) show improved fuel efficiency during the past 20 years. A 4.8% decrease in average annual specific volumetric fuel consumption for the data used in theASAE Standards was shown. Using fuel consumption and power data from the NTTL reports, new equations for fuel consumption were established that predict fuel consumption for diesel engines d...

In this paper we discuss two imagebased 3D modeling methods based on a multi-resolution evolution of a volumetric function's levelset. In the former the role of the levelset implosion is to fuse ("sew'' and "stitch") together several partial reconstructions (depth maps) into a closed model. In the latter the levelset's implosion is steered directly by the texture mismatch between views. Both so...

A method to improve model based diagnosis for the air path of a truck engine is presented. Originally, inaccuracies in both the volumetric efficiency static model and sensors limited the diagnosis performances. Statistical charts built from truck operational data were tested in order to reduce the overall residual dispersion. Data taken from two different trucks working in various operating con...

One of the major challenges in petroleum industry is producing residual oil from underground. One of the major techniques for enhancing oil recovery (EOR) is using gas injection. However, gas has poor volumetric sweep efficiency, this is attributed to its high mobility which considers to be higher compared with oil and water mobility. Several techniques are proposed and applied for reducing gas...

the scarcity of water resources and supply resources limitation, have caused an increasing gap between water supply and demand specially in recent decades in almost all regions of the globe. one of the best known solutions proposed by the economists is using the different water pricing approaches thereby obtaining the optimal allocation and social justice. to this purpose, this paper uses the p...

A new failure mechanism has been discovered for today’s latest high volumetric efficiency multilayer chip capacitors. Over the past couple of years, the drive for lower costs has been promoted by the replacement of silver palladium electrodes by nickel. Diligent qualification procedures predicted very long life. However, experience has uncovered an Achilles heel. The capacitors fail when expose...

We discuss two image-based 3D modeling methods based on a multiresolution evolution of a volumetric function’s level set. In the former method, the role of the level set implosion is to fuse (“sew” and “stitch”) together several partial reconstructions (depth maps) into a closed model. In the later, the level set’s implosion is steered directly by the texture mismatch between views. Both soluti...

Nickel Cadmium batteries are popular because they have a relatively low cost and offer a mature technology. Nickel Metal Hydride batteries have improved volumetric efficiency and have less environmental concerns than Nickel Cadmium. Lithium-Ion batteries are emerging as a leader in the portable market due to their high energy density. Lithium-Ion batteries have the highest initial cost, however...