Filters








66,039 Hits in 4.8 sec

Towards the design of an optimal mixer

OLEG GUBANOV, LUCA CORTELEZZI
2010 Journal of Fluid Mechanics  
We define as an optimal mixer a mixing device able to deliver a uniformly optimal mixing performance over a wide range of operating and initial conditions.  ...  First, we optimize the time sequence of the switching protocols and show that the mixing performance of the time-optimized mixer, although substantially improved with respect to the reference mixer, is  ...  Recently, Thiffeault & Pavliotis (2008) applied a variational approach to determine the optimal source distributions which maximize mixing for a range of operating conditions.  ... 
doi:10.1017/s0022112009993806 fatcat:5zkorh6wyfhbrlgsq5ctzen6fe

Modeling and Control of a Parallel Waste Heat Recovery System for Euro-VI Heavy-Duty Diesel Engines

Emanuel Feru, Frank Willems, Bram de Jager, Maarten Steinbuch
2014 Energies  
To achieve this, a switching model predictive control strategy is developed.  ...  This paper presents the modeling and control of a waste heat recovery system for a Euro-VI heavy-duty truck engine.  ...  Acknowledgments The authors gratefully acknowledge the financial support of TNO Automotive, The Netherlands. Author Contributions All the authors contributed to the work in this manuscript.  ... 
doi:10.3390/en7106571 fatcat:4cfkfyfr3vbztecg3pz7sn35si

Optimal Control of Digital Hydraulic Drives using Mixed-Integer Quadratic Programming

Mateusz Sniegucki, Markus Gottfried, Uwe Klingauf
2013 IFAC Proceedings Volumes  
In this work we present an optimal control approach for torque control of Digital Hydraulic Drives using Mixed-Integer Quadratic Programming in a Model Predictive Control framework.  ...  With the presented approach, optimal switching sequences for the electrical valves are computed that produce the desired torque trajectory with fast tracking and minimal ripple, while keeping switching  ...  Section 3 presents the physical system modeling and derives a mixed logical dynamical system representation. In section 4 the design of optimal control is shown.  ... 
doi:10.3182/20130904-3-fr-2041.00013 fatcat:2umhgdrzzrgxlgkyu7ggomos4q

A Pulsed Source-Sink Fluid Mixing Device

B.A. Cola, D.K. Schaffer, T.S. Fisher, M.A. Stremler
2006 Journal of microelectromechanical systems  
In order to conserve fluid and promote mixing, the fluid extracted through a sink is subsequently injected through a source.  ...  Efficient fluid mixing can be achieved in a high-aspect-ratio volume by periodically pulsing an arrangement of source-sink pairs.  ...  Mixing is achieved in this system by combining piecewise constant operation of these two source-sink pairs with periodic relocation of fluid from a sink to a source.  ... 
doi:10.1109/jmems.2005.863786 fatcat:fkktbg624fdvdihx56xdhdbpgi

Bericht über den 4. internationalen Philosophenkongress zu Bologna

G. Faller
1911 Kant-Studien  
In this manuscript, we discuss modular platforms as a potential concept to facilitate the transfer of optofluidic sensing systems to an industrial implementation.  ...  Optofluidics is increasingly gaining impact in a number of different fields of research, namely biology and medicine, environmental monitoring and green energy.  ...  The system functionality and its application will define the approach to follow. For operating analysis systems, the sensor components need to be combined with switching and manipulating elements.  ... 
doi:10.1515/kant-1911-0135 fatcat:dbzz65bl4ndpdbkgxyosetkjvm

Die periodische Presse Deutschlands

1897 Jahrbücher für Nationalökonomie und Statistik  
In this manuscript, we discuss modular platforms as a potential concept to facilitate the transfer of optofluidic sensing systems to an industrial implementation.  ...  Optofluidics is increasingly gaining impact in a number of different fields of research, namely biology and medicine, environmental monitoring and green energy.  ...  The system functionality and its application will define the approach to follow. For operating analysis systems, the sensor components need to be combined with switching and manipulating elements.  ... 
doi:10.1515/jbnst-1897-0143 fatcat:psxt4fwlrrf6romqn2amj56iwa

Beiträge zur Textgeschichte der Historia Augusta

Ernst Hohl
1913 Klio : Beiträge zur alten Geschichte  
In this manuscript, we discuss modular platforms as a potential concept to facilitate the transfer of optofluidic sensing systems to an industrial implementation.  ...  Optofluidics is increasingly gaining impact in a number of different fields of research, namely biology and medicine, environmental monitoring and green energy.  ...  The system functionality and its application will define the approach to follow. For operating analysis systems, the sensor components need to be combined with switching and manipulating elements.  ... 
doi:10.1515/klio-1913-1326 fatcat:afd2n2kajvbutpabzpno7nymd4

VII. Die zweite Lesung des Entwurfes eines Bürgerlichen Gesetzbuches für das Deutsche Reich

Greiff
1895 Jahrbücher für Nationalökonomie und Statistik  
In this manuscript, we discuss modular platforms as a potential concept to facilitate the transfer of optofluidic sensing systems to an industrial implementation.  ...  Optofluidics is increasingly gaining impact in a number of different fields of research, namely biology and medicine, environmental monitoring and green energy.  ...  The system functionality and its application will define the approach to follow. For operating analysis systems, the sensor components need to be combined with switching and manipulating elements.  ... 
doi:10.1515/jbnst-1895-0148 fatcat:djswsezbhja6liewibsxfr2lz4

XI. Geschichte und Kritik der Lehre von der Grundrente

T. Trunk
1866 Jahrbücher für Nationalökonomie und Statistik  
In this manuscript, we discuss modular platforms as a potential concept to facilitate the transfer of optofluidic sensing systems to an industrial implementation.  ...  Optofluidics is increasingly gaining impact in a number of different fields of research, namely biology and medicine, environmental monitoring and green energy.  ...  The system functionality and its application will define the approach to follow. For operating analysis systems, the sensor components need to be combined with switching and manipulating elements.  ... 
doi:10.1515/jbnst-1866-0137 fatcat:fp6zbhzwcbbf3nqgwd2jcy6yfa

Feasibility, efficiency and transportability of short-horizon optimal mixing protocols

LUCA CORTELEZZI, ALESSANDRA ADROVER, MASSIMILIANO GIONA
2008 Journal of Fluid Mechanics  
We present a computationally efficient optimization procedure able to find a sub-optimal protocol through a sequence of short-time-horizon optimizations.  ...  We use the mix-norm as the cost function to be minimized by the optimization procedure.  ...  Since the goal of this study is to provide an optimization procedure for engineering applications, we proposed finding a sub-optimal protocol with a sequence of short-time-horizon optimizations, which  ... 
doi:10.1017/s0022112007009676 fatcat:mxbxwmfyoffjtaqmrhe7ae5m2m

Modular Platforms for Optofluidic Systems

Marko Brammer, Timo Mappes
2014 Optofluidics, Microfluidics and Nanofluidics  
In this manuscript, we discuss modular platforms as a potential concept to facilitate the transfer of optofluidic sensing systems to an industrial implementation.  ...  AbstractOptofluidics is increasingly gaining impact in a number of different fields of research, namely biology and medicine, environmental monitoring and green energy.  ...  The system functionality and its application will define the approach to follow. For operating analysis systems, the sensor components need to be combined with switching and manipulating elements.  ... 
doi:10.2478/optof-2013-0001 fatcat:acttuci5ebgzjlegziummpphmu

OPTIMAL CONTROL OF DISPERSIVE TUBULAR CHEMICAL REACTORS: PART I

F. Logist, I.Y. Smets, J.F. Van Impe
2005 IFAC Proceedings Volumes  
This paper, the first of a series of two, deals with the determination of optimal steady-state jacket fluid temperature profiles for dispersive tubular chemical reactors, ranging from plug flow to perfectly  ...  The bang-bang switching position is numerically optimised, by means of a weighted shooting-type procedure for the determination of the reactor profiles, ensuring the Danckwerts boundary conditions are  ...  Based on this procedure, simulations are performed to determine the optimal switching position for a max-min jacket fluid temperature for whole family of tubular reactors, i.e, from almost perfectly mixed  ... 
doi:10.3182/20050703-6-cz-1902.01677 fatcat:35w53t6qq5filgubsvah5ioa64

MC-Fluid: Fluid Model-Based Mixed-Criticality Scheduling on Multiprocessors

Jaewoo Lee, Kieu-My Phan, Xiaozhe Gu, Jiyeon Lee, Arvind Easwaran, Insik Shin, Insup Lee
2014 2014 IEEE Real-Time Systems Symposium  
A mixed-criticality system consists of multiple components with different criticalities.  ...  Abstract-A mixed-criticality system consists of multiple components with different criticalities.  ...  In LO-mode, jobs of all LO-and HI-tasks are released. • If a job of any HI-task τ i ∈ τ H executes for more than its LO-WCET (C L i ), the system switches the system mode from LO to HI (called mode-switch  ... 
doi:10.1109/rtss.2014.32 dblp:conf/rtss/LeePGLESL14 fatcat:ygtvtyge5jcv3n25fgjyhjwgkq

Nonlinear Functional Difference Equations with Applications

Hua Su, Yuriy V. Rogovchenko, Youssef Raffoul, Yanbin Sang, Fuyi Xu
2013 Discrete Dynamics in Nature and Society  
We appreciated the depth of ideas and the intention to give them a scientific approach.  ...  When there exists at least one uncontrollable subsystem, a sufficient condition is also given to guarantee the stabilization of the switched impulsive system under appropriate switching signal.  ...  Acknowledgments We would like to express appreciation to the authors for their excellent contributions and patience in assisting us.  ... 
doi:10.1155/2013/360860 fatcat:5qxxsm3whvcwbjzmacobo37xxu

A rapid DNA digestion system

Lung-Ming Fu, Che-Hsin Lin
2006 Biomedical microdevices  
The experimental and numerical results show that a mixing performance of 98% can be achieved within a mixing channel of length 1.6 mm when a 150 V/cm driving voltage and a 5 Hz switching frequency are  ...  Through the appropriate control of fixed and periodic switching DC electric fields, electrokinetic forces are established to mix the DNA and restriction enzyme samples and to drive them through the reaction  ...  Acknowledgments The current authors gratefully acknowledge the financial support provided to this study by the National Science Council of Taiwan under grant numbers NSC94-2320-B-020-001, NSC94-2320-B-  ... 
doi:10.1007/s10544-006-9036-0 pmid:17195107 fatcat:a3ya7hvcrranxpx242mkirviau
« Previous Showing results 1 — 15 out of 66,039 results