Control of Turbulent and Magnetohydrodynamic Channel Flows

Control of Turbulent and Magnetohydrodynamic Channel Flows PDF Author: Rafael Vazquez
Publisher: Springer Science & Business Media
ISBN: 0817646981
Category : Language Arts & Disciplines
Languages : en
Pages : 218

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Book Description
This monograph presents new constructive design methods for boundary stabilization and boundary estimation for several classes of benchmark problems in flow control, with potential applications to turbulence control, weather forecasting, and plasma control. One of the main features of the book is a unique "backstepping" approach to parabolic partial differential equations, which yields not only the stabilization of the flow, but also the explicit solvability of the closed-loop system. The work is an excellent reference for a broad, interdisciplinary engineering and mathematics audience: control theorists, fluid mechanicists, mechanical engineers, aerospace engineers, chemical engineers, electrical engineers, applied mathematicians, as well as research and graduate students in these fields.

Control of Turbulent and Magnetohydrodynamic Channel Flows

Control of Turbulent and Magnetohydrodynamic Channel Flows PDF Author: Rafael Vazquez
Publisher: Springer Science & Business Media
ISBN: 0817646981
Category : Language Arts & Disciplines
Languages : en
Pages : 218

Get Book

Book Description
This monograph presents new constructive design methods for boundary stabilization and boundary estimation for several classes of benchmark problems in flow control, with potential applications to turbulence control, weather forecasting, and plasma control. One of the main features of the book is a unique "backstepping" approach to parabolic partial differential equations, which yields not only the stabilization of the flow, but also the explicit solvability of the closed-loop system. The work is an excellent reference for a broad, interdisciplinary engineering and mathematics audience: control theorists, fluid mechanicists, mechanical engineers, aerospace engineers, chemical engineers, electrical engineers, applied mathematicians, as well as research and graduate students in these fields.

Hydromagnetic Channel Flows

Hydromagnetic Channel Flows PDF Author: Lawson P. Harris
Publisher: MIT Press (MA)
ISBN:
Category : Fluid dynamics
Languages : en
Pages : 104

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Book Description
Analysis of three kinds of flow of viscous, incompressible, electrically conducting fluids in high-aspect-ration rectangular channels subjected to transverse magnetic fields: turbulent flow in the presence of a d-c magnetic field, and both laminar and turbulent induction-driven flows.

Magnetohydrodynamics

Magnetohydrodynamics PDF Author: Sergei S. Molokov
Publisher: Springer Science & Business Media
ISBN: 1402048335
Category : Science
Languages : en
Pages : 408

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Book Description
This book revises the evolution of ideas in various branches of magnetohydrodynamics (astrophysics, earth and solar dynamos, pinch, MHD turbulence and liquid metals) and reviews current trends and challenges. Uniquely, it contains the review articles on the development of the subject by pioneers in the field as well as leading experts, not just in one, but in various branches of magnetohydrodynamics, such as liquid metals, astrophysics, dynamo and pinch.

Boundary Control of PDEs

Boundary Control of PDEs PDF Author: Miroslav Krstic
Publisher: SIAM
ISBN: 0898716500
Category : Mathematics
Languages : en
Pages : 196

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Book Description
A clear and concise introduction to backstepping, an elegant new approach to boundary control of partial differential equations (PDEs).

Traffic Congestion Control by PDE Backstepping

Traffic Congestion Control by PDE Backstepping PDF Author: Huan Yu
Publisher: Springer Nature
ISBN: 3031193466
Category : Science
Languages : en
Pages : 363

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Book Description
This monograph explores the design of controllers that suppress oscillations and instabilities in congested traffic flow using PDE backstepping methods. The first part of the text is concerned with basic backstepping control of freeway traffic using the Aw-Rascle-Zhang (ARZ) second-order PDE model. It begins by illustrating a basic control problem – suppressing traffic with stop-and-go oscillations downstream of ramp metering – before turning to the more challenging case for traffic upstream of ramp metering. The authors demonstrate how to design state observers for the purpose of stabilization using output-feedback control. Experimental traffic data are then used to calibrate the ARZ model and validate the boundary observer design. Because large uncertainties may arise in traffic models, adaptive control and reinforcement learning methods are also explored in detail. Part II then extends the conventional ARZ model utilized until this point in order to address more complex traffic conditions: multi-lane traffic, multi-class traffic, networks of freeway segments, and driver use of routing apps. The final chapters demonstrate the use of the Lighthill-Whitham-Richards (LWR) first-order PDE model to regulate congestion in traffic flows and to optimize flow through a bottleneck. In order to make the text self-contained, an introduction to the PDE backstepping method for systems of coupled first-order hyperbolic PDEs is included. Traffic Congestion Control by PDE Backstepping is ideal for control theorists working on control of systems modeled by PDEs and for traffic engineers and applied scientists working on unsteady traffic flows. It will also be a valuable resource for researchers interested in boundary control of coupled systems of first-order hyperbolic PDEs.

A Variational Principle for Magnetohydrodynamic Channel Flow

A Variational Principle for Magnetohydrodynamic Channel Flow PDF Author: Norman C. Wenger
Publisher:
ISBN:
Category : Magnetohydrodynamics
Languages : en
Pages : 36

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Book Description
Variational principle for calculating velocity profile and electric potential distribution in magnetohydrodynamic channel flow.

Hydrodynamic and Magnetohydrodynamic Turbulent Flows

Hydrodynamic and Magnetohydrodynamic Turbulent Flows PDF Author: A. Yoshizawa
Publisher: Springer
ISBN: 9789048150908
Category : Science
Languages : en
Pages : 0

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Book Description
TUrbulence modeling encounters mixed evaluation concerning its impor tance. In engineering flow, the Reynolds number is often very high, and the direct numerical simulation (DNS) based on the resolution of all spatial scales in a flow is beyond the capability of a computer available at present and in the foreseeable near future. The spatial scale of energetic parts of a turbulent flow is much larger than the energy dissipative counterpart, and they have large influence on the transport processes of momentum, heat, matters, etc. The primary subject of turbulence modeling is the proper es timate of these transport processes on the basis of a bold approximation to the energy-dissipation one. In the engineering community, the turbulence modeling is highly evaluated as a mathematical tool indispensable for the analysis of real-world turbulent flow. In the physics community, attention is paid to the study of small-scale components of turbulent flow linked with the energy-dissipation process, and much less interest is shown in the foregoing transport processes in real-world flow. This research tendency is closely related to the general belief that universal properties of turbulence can be found in small-scale phenomena. Such a study has really contributed much to the construction of statistical theoretical approaches to turbulence. The estrangement between the physics community and the turbulence modeling is further enhanced by the fact that the latter is founded on a weak theoretical basis, compared with the study of small-scale turbulence.

Metallurgical Technologies, Energy Conversion, and Magnetohydrodynamic Flows

Metallurgical Technologies, Energy Conversion, and Magnetohydrodynamic Flows PDF Author: Herman Branover
Publisher: AIAA
ISBN: 9781600864025
Category : Direct energy conversion
Languages : en
Pages : 766

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Book Description


Turbulent Flow

Turbulent Flow PDF Author: Peter S. Bernard
Publisher: John Wiley & Sons
ISBN: 9780471332190
Category : Technology & Engineering
Languages : en
Pages : 516

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Book Description
Provides unique coverage of the prediction and experimentation necessary for making predictions. * Covers computational fluid dynamics and its relationship to direct numerical simulation used throughout the industry. * Covers vortex methods developed to calculate and evaluate turbulent flows. * Includes chapters on the state-of-the-art applications of research such as control of turbulence.

Turbulence in Open Channel Flows

Turbulence in Open Channel Flows PDF Author: Hiroji Nakagawa
Publisher: Routledge
ISBN: 1351406612
Category : Technology & Engineering
Languages : en
Pages : 293

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Book Description
A review of open channel turbulence, focusing especially on certain features stemming from the presence of the free surface and the bed of a river. Part one presents the statistical theory of turbulence; Part two addresses the coherent structures in open-channel flows and boundary layers.