Browsing Mechanical Engineering by Author "1"
Now showing items 21-40 of 179
-
A Complete procedure for predicting and improving the performance of HAWT's
Al-Abadi, A.; Ertunç, Özgür; Sittig, F.; Delgado, A. (IOP Publishing, 2014)A complete procedure for predicting and improving the performance of the horizontal axis wind turbine (HAWT) has been developed. The first process is predicting the power extracted by the turbine and the derived rotor ... -
A computational and experimental investigation of synthetic jets for cooling of electronics
Arık, Mehmet; Utturkar, Y. V. (The American Society of Mechanical Engineers, 2015-06-01)Seamless advancements in electronics industry resulted in high performance computing. These innovations lead to smaller electronics systems with higher heat fluxes than ever. However, shrinking nature of real estate for ... -
A computational and experimental study on a harsh environment LED system for vehicle exterior lighting applications
Saati Khosroshahi, Ferina; Tüfekçi, C. S.; Arık, Mehmet (IEEE, 2014)Effect of compact thermal packaging approaches and challenges are investigated for a next generation automotive LED lighting. A challenging three-purpose in one (3i1) highly packaged light emitting diodes (LEDs) lighting ... -
A computational study on the momentum and heat transfer distribution of a low frequency round impinging synthetic jet
Ikhlaq, M.; Dogruoz, B.; Ghaffari, O.; Arık, Mehmet (ASME, 2015)Impinging synthetic jets have been considered as a possible solution for cooling miniature structures. It has been shown that synthetic jet performance is sensitive to the distance between the jet nozzle and the target ... -
Conceptual design of a fully passive transfemoral prosthesis to facilitate energy-efficient gait
Ünal, Ramazan; Behrens, S.; Carloni, R.; Hekman, E.; Stramigioli, S.; Koopman, B. (IEEE, 2018-12)In this paper, we present the working principle and conceptual design toward the realization of a fully-passive transfemoral prosthesis that mimics the energetics of the natural human gait. The fundamental property of the ... -
Conduction-driven cooling of LED-based automotive LED lighting systems for abating local hot spots
Saati, F.; Arık, Mehmet (SPIE, 2018-02)Light-emitting diode (LED)-based automotive lighting systems pose unique challenges, such as dual-side packaging (front side for LEDs and back side for driver electronics circuit), size, harsh ambient, and cooling. Packaging ... -
Connection characteristics of silicon nanowire waveguides and fabrication of physical contact switches
Bulgan, Erdal; Kanamori, Y.; Hane, K. (IEEE, 2010)Optical characteristics of silicon nanowire waveguide connections are studied both theoretically and experimentally. Effects of geometrical sizes and positional alignments on optical performance are investigated. Results ... -
Control of near-field radiative heat transfer via surface phonon-polariton coupling in thin films
Francoeur, M.; Mengüç, Mustafa Pınar; Vaillon, R. (Springer Business+Media, 2011-06)The possibility of controlling near-field radiative heat transfer with the use of silicon carbide thin films supporting surface phonon–polaritons in the infrared spectrum is explored. For this purpose, the local density ... -
Controlled thermal design of LED SLIM TV systems
Özaydın, M. C.; Arık, Mehmet (IEEE, 2017)The market trend of global TV industry is nourished due to recent advancements in optical component technology and user expectations. Due to strong market requirement for slimmer mechanical designs (<;10mm) and increased ... -
Coupling of near-field thermal radiative heating and phonon Monte Carlo simulation: Assessment of temperature gradient in n-doped silicon thin film
Wong, B. T.; Francoeur, M.; Bong, V. N.-S.; Mengüç, Mustafa Pınar (Elsevier, 2014-08)Near-field thermal radiative exchange between two objects is typically more effective than the far-field thermal radiative exchange as the heat flux can increase up to several orders higher in magnitudes due to tunneling ... -
Credible intervals for nanoparticle characteristics
Charnigo, R.; Francoeur, M.; Kenkel, P.; Mengüç, Mustafa Pınar; Hall, B.; Srinivasan, C. (Elsevier, 2012-01)Solving the inverse problem of nanoparticle characterization has the potential to advance science and benefit society. While considerable progress has been made within a framework based on the scattering of surface ... -
Dependent absorption and scattering by interacting nanoparticles
Donmezer, F. N.; Mengüç, Mustafa Pınar; Okutucu-Ozyurt, T. (Begell House Inc., 2010)Dependent light scattering and absorption patterns of metallic nano-sized particles in interaction with other spherical and cone-like structures were investigated. The numerical solution of the light scattering problem was ... -
Derivation of generalized Camassa-Holm equations from Boussinesq-type equations
Erbay, Hüsnü Ata; Erbay, Saadet; Erkip, A. (Informa Group, 2016)In this paper we derive generalized forms of the Camassa-Holm (CH) equation from a Boussinesq-type equation using a two-parameter asymptotic expansion based on two small parameters characterizing nonlinear and dispersive ... -
A design and optimization method for matching the torque of the wind turbines
Al-Abadi, A.; Ertunç, Özgür; Weber, H.; Delgado, A. (AIP Publishing, 2015)An aerodynamic shape optimization method for a horizontal axis wind turbine is developed and verified through experimentation with a laboratory-scale wind turbine. Our method is based on matching the rotor's and the coupled ... -
Design of a parallel robot for needle-based interventions on small animals
Bebek, Özkan; Hwang, M. J.; Çavuşoğlu, M. C. (IEEE, 2013-02)In this paper, a novel 5-degrees-of-freedom robot for performing needle-based interventions on small animal subjects is presented. The robot can realize dexterous alignment of the needle using two parallel mechanisms, and ... -
Design of bio-joint shaped knee exoskeleton assisting for walking and sit-to-stance
Kapci, M. F.; Ünal, Ramazan (Springer Nature, 2019)In this study, a bio-joint shaped knee joint exoskeleton is presented. This design is meant for avoiding misalignment of the exoskeleton joint with the biological knee joint. For this purpose a cam mechanism has been ... -
Design sensitivity and optimization of powertrain mount system design parameters for rigid body modes and kinetic energy distributions
Şendur, Polat; Tunç, B. (Springer Nature, 2020-08-24)This study evaluates the influences of the powertrain mount design parameters on the frequencies of powertrain rigid body modes and their kinetic energy distributions (KEDs), which play an important role in the low-frequency ... -
A design tool for direct and non-stochastic calculations of near-field radiative transfer in complex structures: The NF-RT-FDTD algorithm
Didari, Azadeh; Mengüç, Mustafa Pınar (Elsevier, 2017)Advances in nanotechnology and nanophotonics are inextricably linked with the need for reliable computational algorithms to be adapted as design tools for the development of new concepts in energy harvesting, radiative ... -
Design, operation, and motion characteristics of a precise piezoelectric linear motor
Hii, K.-F.; Vallance, R. R.; Mengüç, Mustafa Pınar (Elsevier, 2010-04)This paper presents the design, operation, and motion characteristics of a precise piezoelectric motor for linear translation. The motor is compact, thermally stable, ultra-high vacuum compatible, and suitable for applications ... -
Developing a standard measurement and calculation procedure for high brightness LED junction temperature
Arık, Mehmet; Kulkarni, K. S.; Royce, C.; Weaver, S. (2014)White light emitting diodes (LEDs) are appearing in general illumination applications. Clusters of such LEDs can replace an incandescent light bulb of equal luminosity on the merit of considerably low power consumption. ...
Share this page