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Centrifugal Compressor Spiral Dry Gas Seal Simulation Working at Reverse Rotation
(
Elsevier Ltd
, 2013 , Conference Paper)
Unidirectional dry gas seal may experiences reverse rotation when equipped in a centrifugal compressor. This paper describes how the reverse rotation effects on the spiral unidirectional dry gas seal performance and pressure ...
The effects of gas tungsten arch welding on the corrosion and mechanical properties of AA 6061 T6
(2013 , Article)
Corrosion of welded and un-welded Aluminum Alloy 6061 T6 was investigated by immersing specimens in 3.5% (wt) NaCl solution. Potentiodynamic and open circuit potential measurements were conducted. The mechanical properties ...
Greedy algorithms and metaheuristics for a multiple runway combined arrival-departure aircraft sequencing problem
(
Elsevier
, 2013 , Article)
This paper examines the Aircraft Sequencing Problem (ASP) over multiple runways, under mixed mode operations with the objective of minimizing the total weighted tardiness of aircraft landings and departures simultaneously. ...
MIP models for minimizing total tardiness in a two-machine flow shop
(
Palgrave Macmillan Ltd.
, 2013 , Article)
We propose compact mixed-integer programming models for the NP-hard problem of minimizing tardiness in a two-machine flow shop. Also, we propose valid inequalities that aim at tightening the models' representations. We ...
Microstructure, thermal and mechanical response of AZ51/Al2O3 nanocomposite with 2 wt.% Ca addition
(
Elsevier, Ltd
, 2013 , Article)
In the present study, new AZ51/Al2O3–2Ca magnesium nanocomposite was successfully synthesized by simultaneously adding 2wt.% aluminum, 2wt.% Ca and 1.5vol.% nanosized Al2O3 (50nm) into AZ31 matrix using a disintegrated ...
Design of thin wall structures for energy absorption applications: Enhancement of crashworthiness due to axial and oblique impact forces
(2013 , Article)
This paper describes a computationally aided design process of a thin wall structure subject to dynamic compression in both axial and oblique directions. Several different cross sectional shapes of thin walled structures ...
Evaluation of thermal comfort and cooling performance of residential buildings in arid climates
(
Institute of Electrical and Electronics Engineers Inc.
, 2013 , Conference Paper)
In this paper, a parametric study on the thermal comfort and cooling performance of residential buildings is reported. The study was carried out in the hot arid climatic conditions of Qatar. The influence of diurnal variation ...
An integrated approach for airline flight selection and timing, fleet assignment, and aircraft routing
(
INFORMS Inst.for Operations Res.and the Management Sciences
, 2013 , Article)
Airline profits critically depend on the nature and efficiency of service they provide and accrue from a complex planning process involving schedule design fleet assignment aircraft routing and crew scheduling which are ...
Using hierarchical composite approach to improve mechanical response of Mg and Mg–Bi2O3 nano-composites
(
Elsevier, Ltd
, 2013 , Article)
Novel Mg nano-composites reinforced with either Bi2O3 nano-particles or hybrid Al–Bi2O3 particles (Bi2O3 nano-particles hybridized with Al using ball milling) have been synthesized, in this work, through powder metallurgy ...
A lifted compact formulation for the daily aircraft maintenance routing problem
(
INFORMS Inst.for Operations Res.and the Management Sciences
, 2013 , Article)
Given a set of flights for a specific fleet type the aircraft routing problem (ARP) determines the flying sequence for each individual aircraft while incorporating specific considerations of minimum turn time maintenance ...