The average bed shear stress and bed friction factor of samples with any roughness was derived from the head loss between upstream and downstream of a test section in an erosion tunnel. The method was validated in both hydraulically smooth (plexiglass; Reynolds number less than 25,000) and rough regimes (calibrated particles with known roughness). As a first step toward using this method on nat...

The machining system based on an industrial robot is a new type of equipment to meet the requirements high quality, efficiency and flexibility for large complex components aircraft spacecraft. error compensation technology widely used in robotic improve positioning accuracy with intention meeting precision aerospace manufacturing. However, robot’s decreases significantly when orientation tool c...

Suspended substances in car washes can often be easily removed by physicochemical processes. The main problem is to remove dissolved such as detergents from the water. In this study, a biodegradable substance Sodium Lauryl Sulfate (SLS) was wash wastewater use of Phragmites australis subsurface constructed wetland. For 4 plexiglass reactors having an effective volume 10.8 L with dimensions 15cm...

A new triangular shape solar distillation system is fabricated using locally available materials by integrating with PV panel connected to DC water heater. It designed for the first time distill saline or seawater heat energy directly (to sample water) and indirectly (through heater water). The trough made of Plexiglass painted in black color which placed inside frame UPVC pipe. performance sti...

In this study, one dimensional model is developed for capsule train flow in a horizontal pipe. Simulation model calculates the pressure drop of the flow of solid-water two-phase mixture inside the pipe. Through this model, effects of different suspension viscosity models and suspension to wall friction coefficients on the pressure drop of the capsule train flow are investigated. The simulation ...

A newly designed capillary deoxygenator has been constructed by using microporous polypropylene hollow fibers sealed into an airtight plexiglass housing. Oxygenated red cell suspensions and hemoglobin solutions flowing through the hollow fibers were subjected to deoxygenation with a gas mixture composed of 95 percent N2 and 5 percent CO2 passed through the housing. At a given flow rate of the o...

A new kind of memory effect on low frequency dielectric measurements on plexiglass (PMMA) is described. These measurements show that cooling and heating the sample at constant rate give an hysteretic dependence on temperature of the dielectric constant ǫ. A temporary stop of cooling produces a downward relaxation of ǫ. Two main features are observed i) when cooling is resumed ǫ goes back to the...

Spool valves are subject to a deteriorated performance and noise due the occurrence of cavitation phenomena. It is well known that effects component causes an unwanted noise. The sound levels influenced by many parameters like geometries opening areas. In this paper simple valve body made in plexiglass has been tested analyzing cavitating area U-grooves. A dedicated test rig equipped with high-...

It is difficult to determine the coefficient of restitution accurately due small size, light weight, and complex influencing factors rice grain. In study, experimental principle was described by impact method, coefficients four typical varieties in Northeast China were measured. According orthogonal experiment, primary secondary affecting grain collision material, spring compression (initial ve...