The study of phase change heat transfer crude oil melting is important for preheating and restarting pipelines. Combining the characteristics waxy melting, a novel mathematical model was established, which can accurately describe nonlinear release latent heat, liquid-solid interface changes, natural convection other key problems. In process heating variation law solid-phase position in pipe at ...

A mathematical model of mixing and crushing a liquid at the initial site device for supplying solution with high-temperature gas flow has been developed. The process using energy hot water vapor, cotton oil misc when it is fed to final distillation considered. An analytical method calculating actual size section nozzle supply Based on data in production, by methods modeling hydrodynamics phases...

In the movement process of continuous bubbles, different liquid-flow state and initial temperature bubbles have important influence on bubble heat transfer. this study, flow transfer characteristics high in normal liquid are investigated. The rising studied by numerical simulation compared with experimental results for verification. show that shape, velocity affected position bubble. Because cl...

(30 pts) 1. You have been requested to troubleshoot problems with a well stirred reactor in your Texas chemical production plant. After taking the red eye flight and a long taxi ride to your hotel and then the plant your arrive exhausted, but eager to solve this problem. Apparently the problem with this 165 L reactor is that the conversion of the reactant, Anychemical, is too low at XA = 0.53. ...

The flow field produced by a shock wave reflecting from a helium gas-liquid interface was investigated using a cryogenic shock tube. Incident and reflected shock waves were observed in the gas; transmitted firstand second-sound shocks were observed in the liquid. Wave diagrams are constructed to compare the data with theoretical wave trajectories. Qualitative agreement between data and theory i...

The proper culture conditions for producing cellulase of Bacillus amyloliquefaciens S1, isolated from the cecum of goose was optimized by single-factor experiment combined with orthogonal test. The properties of the cellulase were investigated by DNS method. The appropriate doses of B. amyloliquefaciens S1 were obtained by adding them to goose feed. It indicated that the suitable culture condit...

Motivated by recent experiments in ultracold atomic gases that explore the nonequilibrium dynamics of interacting quantum many-body systems, we investigate the opposite limit of Landau's Fermi-liquid paradigm: We study a Hubbard model with a sudden interaction quench, that is, the interaction is switched on at time t=0. Using the flow equation method, we are able to study the real time dynamics...

Incorporation of layers of noble metals in non-van der Waals layered materials may be used to form novel layered compounds. Recently, we demonstrated a high-temperature-induced exchange process of Au with Si in the layered phase Ti3SiC2, resulting in the formation of Ti3AuC2 and Ti3Au2C2. Here, we generalize this technique showing that Au/Ti2AlC and Au/Ti3AlC2 undergo an exchange reaction at 65...

Microporous poly(vinylidene fluoride) (PVDF) membranes were prepared from PVDF/N,N-dimethylacetamide (DMAC) solutions by using upercritical CO2 phase inversion process. As revealed by scanning electron microscope (SEM) and differential scanning calorimeter (DSC), he PVDF membranes exhibit morphological characteristics resulting from both liquid–liquid phase separation and crystallization, i.e.,...

In the present work, the process of carbon dioxide absorption is analyzed at high partial pressures, in aqueous solutions of 1-amino-2-propanol (monoisopropanolamine (MIPA)), in relation to the thermal effects involved. All experiments were made in a stirred-tank reactor with a plane unbroken gas-liquid interface. The variables considered were the MIPA concentration within the range 0.1-2.0 M a...