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Entropy generation analysis of laminar flows of water-based nanofluids in horizontal minitubes under constant heat flux conditions
(MDPI AG, 2018-04)
During the last decade, second law analysis via entropy generation has become important in terms of entropy generation minimization (EGM), thermal engineering system design, irreversibility, and energy saving. In this ...
Investigation of combined optical and thermal effects on phosphor converted light-emitting diodes with liquid immersion cooling
(SPIE, 2018)
The inclusion of phosphor into a high brightness light-emitting diode (LED) package is a complicated task since LEDs are encapsulated with a phosphor and epoxy mixture to convert blue photons to white light. Moreover, this ...
Impact of orifice location on the mechanical response of side and central orifice synthetic jets
(2018-07-24)
Synthetic jets have been at the focus of a number applications including flow control and thermal management of microelectronics due to their unique characteristics of transferring linear momentum through a flow structure ...
Development of a computational modeling and experimental validation approach for KSF LED packages in a 65” ultra thin LED TV system
(IEEE, 2018-07-24)
The customer expectations in global TV market have changed over the last decade significantly towards a thinner with a higher brightness and a wider color gamut (WCG) TV products. These requirements led to a drastic increase ...
An investigation of performance of synthetic jets emanating from circular, elliptical and rectangular nozzles
(IEEE, 2018-07-24)
Impinging synthetic jets have been considered as a future solution for cooling miniature structures. Synthetic jet performance is sensitive to a number of parameters such as orifice size, orifice shape and nozzle-to-target ...
A comparative study on the junction temperature measurements of LEDs with raman spectroscopy, microinfrared (IR) imaging, and Forward voltage methods
(IEEE, 2018-11)
Energy efficiency, long life, exceptional color, and performance of solid-state light sources have resulted in a rapidly increasing trend in a number of practical applications especially for general lighting after a long ...
The effect of pH on particle agglomeration and optical properties of nanoparticle suspensions
(Elsevier, 2018-11)
Nanoparticle suspensions (NPSs) are used extensively to improve the thermal efficiency of different engineering systems because of their unique thermo-optical properties. NPSs have also been uses in coatings as they improve ...
A stability analysis for the acceleration-based robust position control of robot manipulators via disturbance observer
(IEEE, 2018-10)
This paper proposes a new nonlinear stability analysis for the acceleration-based robust position control of robot manipulators by using disturbance observer (DOb). It is shown that if the nominal inertia matrix is properly ...
A comparison study on observer-based force control of series elastic actuators
(IEEE, 2018)
This paper presents a comparison study for the robust force control of series elastic actuators (SEAs). In most robotics systems, SEAs are used as an essential actuation method due to the benefits such as lower reflected ...
Mars gezgini prototipi Merih-2
(Gazi Üniversitesi, 2018-12)
Merih-2, Özyeğin Üniversitesi Rover Takımı tarafından University Rover Challenge 2016 ve European Rover Challenge 2016’ya katılmak ve Mars koşullarında görev yapmak için tasarlanan gezgindir. Sürüş için Merih-2’nin 6 adet ...
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