A solution layer crystallization process in a concentric annulus is presented that removes the need for filtration. A dynamic model for layer crystallization with and without a recirculation loop is developed in the form of coupled partial differential equations describing the effects of mass transfer, heat transfer, and crystallization kinetics. The model predicts the variation of the temperat...

Stream surfaces are a classic flow visualization technique used to portray the characteristics of vector fields, and texture advection research has made rapid advances in recent years. We present a novel hybrid visualization of texture advection on stream surfaces. This approach conveys properties of the vector field that stream surfaces alone cannot. We apply the visualization technique to var...

Thermodynamic temperature measurement techniques fall into three separate classes: pneumatic devices, heattransfer gages, and calorimetric methods. All three are characterized by the ability to measure temperatures (or related fluid properties such as enthalpy) at levels beyond the capability of thermoelectric materials or pyrometer calibration devices. The pneumatic probe consists of a tube ha...

Simulation has a big importance nowadays when the speed of computers grows rapidly and the price is on the other hand decreasing. The paper is focused on the simulation of the steady-state and dynamic behaviour of the nonlinear system represented by the tubular chemical reactor with the co-current and countercurrent cooling in the jacket. These analyses are then used for the choice of the suita...

development of a numerical model which describes launching of offshore jackets from barge is presented in this paper. in this model, in addition to capabilities of commercial softwares, water entry forces on jacket members and an implicit newmark solution technique are included. the results are in general agreement with other numerical software’s available (sacs). fluid forces acting on jacket ...

− A new controlled-clearance pressure balance has been developed to improve the hydraulic pressure standard for pressures up to 1 GPa. For several controlledclearance piston-cylinders, characterization experiments based on the Heydemann-Welch model were performed to estimate the effective area of them. The results for the piston-cylinders of different pressure ranges are exemplified in this pap...

This paper reports the improved model of a tempering machine for heating formulation mixture marshmallow, characterized by heat supply to working tank through replacement steam jacket with film resistive electric heater radiative type (FREhRT). The surface exchange device was increased stirrer FREhRT; secondary energy (30....85 °C) used converting it Peltier elements autonomous operation superc...

The successful design of a liquid rocket engine is strictly linked to the development efficient cooling systems, able dissipate huge thermal loads coming from combustion in thrust chamber. Generally, architectures are based on regenerative strategies, adopting fuels as coolants; and jackets, including several narrow axial channels allocated around chambers. Moreover, since cryogenic used, case ...

The halo body jacket and plaster Minerva body jacket have been the preferred orthoses when maximal stabilization of the cervical spine is required. This report identifies some disadvantages of these orthoses, introduces the thermoplastic Minerva body jacket (TMBJ), and discusses its advantages in the rehabilitation of patients with cervical spine instability. A preliminary roentgenographic stud...