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Bauingenieur

Browse Volumes: Bauingenieur

Bauingenieur Volume 98 (2023) Issue 06 ISSN Online: 0005-6650

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Marjan Pipenbaher Pelješac bridge, Croatia – Part 2: Construction and Assembly/Pelješac-Brücke, Kroatien – Teil 2: Ausführung und Montage S. 188-196

„… ):• Parameters describing the current state of the structure (tem-perature of the superstructure, stay cables and …” „… corrosion of steel superstructure, condition of steel wires of stay cables, …).2 Construction of the …” „… concrete. This method is used for shorter piles on the approach parts of the bridge where the layers of …”

doi.org/10.37544/0005-6650-2023-06

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VDI Wissensforum GmbH (ed.)

Baudynamik 2018

Series: VDI-Berichte

Volume 2321 2018

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F. Pospischil, Effectiveness of Under-Sleeper-Pads – Recent S. 137-148

„… superstructure, Under-Sleeper-Pads (USP) are primarily used for ballast protection and therefore to improve the …” „… , reduce the formation of hollowness beneath sleepers, and lower superstructure settlements. However …” „… high quality superstructure system. Continue with the basis of vibration measurement interpretation and …”

doi.org/10.51202/9783181023211

Xiao Zhao - Reactor network synthesis with guaranteed robust performance

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Xiao Zhao

Reactor network synthesis with guaranteed robust performance

Series: Verfahrenstechnik

Volume 952 2017

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Introduction S. 1-16

„… method with numerical optimization. Superstructure approach. The superstructure approach for reactor …” „… superstructure approach using static or dynamic optimization. The first presentation of the superstructure …” „… approach, a superstructure of a reactor network containing different candidates of connection patterns of …”

Titelei/Inhaltsverzeichnis S. I-XIV

„… , Integration of process and control system design, Superstructure approach, Eigenvalue constraints …” „… presented. The work is based on the superstructure approach and aims to find an optimal process flowsheet …” „… process design. The superstructure approach results in an optimal process flowsheet with determined …”

Case study of allyl chloride production S. 107-132

„… steady-state operating point. 6.1.1 Problem setting The superstructure shown in Fig. 3.1 is used, which …” „… consists of both PFR and CSTR. For comparison, we consider superstructures with different numbers of N PFR …” „… and CSTR. When N is an even number, the superstructure contains an equal number of CSTR and PFR. When …”

Open-loop reactor network synthesis S. 30-46

„… eigenvalue-based dynamic properties for the design of open-loop reactor networks. A structured modeling approach …” „… superstructure as a separate subsystem and then builds the flow connections to form a connected network. 30 3.1 …” „… reactor network models Fig. 3.1 shows an open-loop superstructure of a N -reactor network [87], which will …”

Summary and outlook S. 133-140

„… in the reactor network superstructure. A structured modeling procedure is proposed to formulate the …” „… open-loop model of the reactor network. Each reactor in the reactor network superstructure is modeled by a …” „… by applying the normal vector approach, which guarantees robust dynamic properties. A great advantage …”

Bibliography S. 158-176

„… ] L. Achenie and L. Biegler. A superstructure based approach to chemical reactor network synthesis …” „… programming approaches to mathematical programs with complementarity constraints. SIAM Journal on Optimization …” „… . Constructive targeting approaches for the synthesis of chemical ractor networks. Industrial & Engineering …”

Simultaneous design of reactor network and its decentralized control system S. 47-59

„… parameters in an integrated step. The advantages of using a simultaneous design approach have been discussed …” „… network superstructure are degrees of freedom of the design problem. This chapter is organized in a …” „… flowsheet structure without the need for integers as in the established synthesis approaches. 1In this case …”

Appendices S. 141-157

„… , the proposed synthesis method can be applied straightforwardly to reactor network superstructures …” „… including CSTR and PFR. Assume that the i-th reactor in a reactor network superstructure, Fig. 3.1, is a PFR …” „… , k → 0, and hence, yk is a sequence approaching y∗. Also, for any q∗, qk can be selected so that all …”

doi.org/10.51202/9783186952035

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Bauingenieur

Browse Volumes: Bauingenieur

Bauingenieur Volume 95 (2020) Issue 11 ISSN Online: 0005-6650

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H. D. B. Aji, M. B. Basnet, Frank Wuttke A numerical study on the influences of underlying soil and backfill characteristics on the dynamic behaviour of typical integral bridges S. S 2-S 11

„… transfer between the soil and the superstructure. The results also show that the degree of influence of …” „… [19], [22]. The integral concept is realized by building monolithically the superstructure with its …” „… , especially in the case of short span or high stiffness superstructure. From the standpoint of …”

doi.org/10.37544/0005-6650-2020-11

Sebastian Recker - Systematic and Optimization-Based Synthesis and Design of Chemical Processes

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Sebastian Recker

Systematic and Optimization-Based Synthesis and Design of Chemical Processes

Series: Verfahrenstechnik

Volume 951 2017

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Introduction S. 1-10

„… expert-knowledge and heuristics involving problem decomposition. Examples are the hierarchical approach to …” „… approaches to conceptual process design deal only with one of these specific subproblems. A recent database …” „… region concepts, dynamic optimization, and superstructure optimization. Reactor selection heuristics can …”

A unifying framework for conceptual process design S. 11-54

„… reactor feed concentration, which is often not known in the early design phase. Superstructure approaches …” „… Nj,i N0,i Ni,out Ni,j Vi , zi Figure 2.2: State-space representation of the superstructure formulation …” „… RD, xR, bR,n RB, yB, bB,n Ln, xnVn+1, yn+1 F, zF, bF,nF, zF B, xB D, xD Figure 2.5: Superstructure …”

Conclusions and final thoughts S. 95-98

„… methods for the optimization-based process design by means of superstructure optimization. Marquardt et al …” „… optimization procedure integrate existing and new approaches. After all of these advancements, the process …” „… alternatives and as such the approach is not completely systematic. Especially for catalytic processes, the …”

Titelei/Inhaltsverzeichnis S. I-XIV

„… . Various industrial case studies illustrate the application of the novel approaches and highlight their …” „… . . . . . . . . . . . . . . . . . . . . 39 2.4.4 Optimization of a process superstructure with shortcut models . . . 41 V Contents 2.4.5 …” „… superstructure optimization. Marquardt, Kossack and Kraemer (2008) proposed a framework for an optimization-based …”

Bibliography S. 99-114

„… Engineering 81, 218 – 244. Balakrishna, S. and Biegler, L. (1993): A unified approach for the simultaneous …” „… Fair, J. R. (1990): Separation system synthesis: a knowledge-based approach. 1. Liquid mixture …” „… ): Separation system synthesis: a knowledgebased approach. 2. Gas/vapor mixtures, Industrial & Engineering …”

Systematic design of a butadiene telomerization process S. 63-94

„… heuristic approach described in Chapter 3, in the following alternative flowsheet variants for a …” „… than TPP ligand, cost likely to be higher. Alternative immobilization approaches for metal-ligand based …” „… approach to immobilization) to be used to select viable immobilization options based on expert knowledge …”

doi.org/10.51202/9783186951038

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