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Mar 22, 2018Open Access
This work presents the computation of depreciation
under Modified Accelerated Cost Recovery System using simulation software
developed for the purpose. The three case studies presented provide in-depth
analysis and applications of the simulation software that was developed. The
results from the three case studies proved that the investment of $900,000 by Virgin Atlantic
airline to purchase three new aircrafts will be ...
Feb 23, 2018Open Access
The Ranque-Hilsch vortex tube is a simple device with no moving parts and no mechanical operations. This tube separates the inlet air into two distinctive regions; an outward high temperature region and an inner low-temperature one. A computational study of the vortex tube is presented in this article using the ANSYS Fluent software whose results showed good agreement with the ex-perimental measurements. ...
Jan 24, 2018Open Access
To judge the driver’s
driving intention can effectively improve the car braking energy recovery.
Aiming at the problem of braking energy recovery of four wheel drives electric vehicle, combined with the main
restrictive conditions of ECE regulations, motor characteristics and battery
SOC, a braking force distribution strategy for different braking intention is
established. The MATLAB/ Simulink platform is used for modeling and
sim ...
Jan 15, 2018Open Access
Polycarbonate is a transparent commercial
engineering polymer used in many applications especially in mobile protector screen for its good properties.
In the present paper, nano composite material composed of polycarbonate sheet
and nano titanium dioxide particles was prepared. Three ratios of TiO2 (0.01-0.03-0.05 g) were employed with polycarbonate by using pressing technique. Diff ...
Dec 28, 2017Open Access
The performance, emissions and combustion
characteristics of a spark ignition engine
at varying compression ratio and spark timing using two grades of gasoline in
Saudi Arabian market, RON91 and RON95 have been presented on
this paper. The tests were conducted using a single cylinder, four-stroke spark ignition research engine that operates with
different RON fuel. The experiments were conducted at a wide-open throttle with
an eng ...
Nov 30, 2017Open Access
Micro-Electro-Mechanical-Systems (MEMS) is an emerging technology that integrates micromachined mechanical structures with integrated circuits (IC). During the last two decades, it has grown vastly as a prominent research area among scientists and engineers. Usually the main components of MEMS are sensors, actuators, and structures with all in microscale. A photostrictive mate-rial has high potential to be used in a MEMS applicati ...
Jun 26, 2017Open Access
Load fluctuation
characteristics have a
great influence on drilling performance. So, study
the influence of drilling kinematic parameters on
the load fluctuation characteristics of PDC bit becomes more and more important. Gas drainage drilling experiment table was
built and Gas
drainage drilling experiment was carried out under different feed speed, different
rotation speed and same drilling thickness with different feed speed and ...
May 17, 2017Open Access
Vertical
or straight hole drilling that usually has less than 30 degree still is utilized
to drilling operations in conventional and even in unconventional resources in
nowadays worldwide for increasing recovery i.e. higher rate of penetration where there are kind of challenges that demand
investigation of this type of drilling. One key challenge is efficient ho ...
Feb 27, 2017Open Access
In the work being presented, computational fluid dynamics (CFD) analysis on fluidized bed gasification of rice husk has been carried out. The multiphase Eulerian model was undertaken in the analysis. Due to the lack of computational space, two dimensional models of fluidized bed were created. The objective of the investigation was to study the effect of variation on velocity with varying particle sizes. The quality of syn ...
Feb 09, 2017Open Access
In the present study, computational details of two parallel plane jets with nozzle separation ratio = 4.25 and Re = 11,000 are presented. A study of the turbulence has also been done. The computational domain size, grid resolution, and different discretization schemes on the predictions are discussed. The existence of a recirculation flow region, a merging region and a combined region in the two parallel plane jets configuration h ...
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