The loss of oil fluid flow in the piping system petroleum industry due to friction is cause low efficiency. To reduce loss, viscosity can be lowered by adding water as a mixture. Actually, influenced several factors including pattern, type, velocity, pressure and pipe diameter. This study aims determine effect patterns on changes velocity two-phase system. numerical analysis research was carrie...

The fragility of Chinese banking system is of a complex mixed-type. It is a special mixture of the fragility that comes from the friction between a general fragility and the system of the systematic transition. This paper measures the degree and distribution of the fragility of Chinese banking system form 1985 to 2006 by macroscopic economic rules and makes an empirical analysis of the factors ...

In this manuscript, a general formulation of 3-dimensional compressible fluids based on the port-Hamiltonian framework is presented, both for isentropic and non-isentropic assumptions, describing energy flux between mechanical, chemical, thermal domains, with an explicit characterization first second law thermodynamics. For fluids, conversion kinetic into heat by viscous friction considered as ...

introduction increasing the area of absorber plate between the flowed air through the duct can be accomplished by corrugating the absorber plate or by using the artificial roughness underside of the absorber plate as the commercial methods for enhancing the thermohydraulic performance of the flat plate solar air heaters. evaluation of this requires the construction of separated solar air heater...

We have examined by molecular dynamics simulations the friction which arises when two hydrogen-te~inated diamond (111) surfaces are placed in sliding contact. In particular, the effects of load, crystallographic sliding direction, and substitution of surface hydrogen groups by methyl groups on the friction coefkient p were investigated. For the hydrogen-terminated system, it is possible to have...

This paper analyzes natural circulation flow in solid breeder blanket designs with poloidal coolant channels under a LOFA condition. Analyses couple the flow transient behaviors with transient heat transport models. While two-phase natural circulation exists in the system, a homogenous mixture model is used. The results of example calculations performed for an ITER solid breeder design concept ...

The present work is carried out to investigate heat transfer and friction factor characteristics of fluid (air) flow through turbulent channel i.e. parallel plate heat exchanger for different geometry and designs parameters, with a bottom plate applied to uniform constant heat flux thermal boundary condition, and upper plate is provided with a insulated condition. The fluid domain is designed u...

Variations of the partial thromboplastin time (PTT) were tested to determine the best screening method for detection of inhibitors of factor VIII. Variables tested included the duration of preincubation of a mixture of patient plasma and factor VIII source (normal plasma), the ratio of the patient plasma to the normal plasma, and the duration of incubation of the normal plasma-patient plasma mi...