An approach to combine the second-order and third-order analysis methods for optimization of a Stirling engine

New results from the most recent work within the Norwegian Joint Industry Project (JIP) “Higher Order Wave Load Effects on Large Volume Structures” are presented. A nonslender theoretical model is validated from experiments for two fixed, vertical cylinders with different diameter/peak wavelength ratios. A combination of complete diffraction first-order simulations, sum and difference frequency second-order simulations, and third-order FNV (Faltinsen, Newman, and Vinje, nonlinear long wave model) is implemented in order to develop a simplified and robust ringing load model for a large range of cylinder diameter/peak wavelength ratios. Results from the full diffraction second-order analysis show a significant reduction of second-order loads compared to pure FNV in the wavelength range relevant for ringing loads. The results show improved correspondence with high-frequency experimental loads compared with the unmodified FNV. Results for different cylinder peak wavelength ratios are presented, including validation against experiments. In addition, a few simplified response simulations are carried out demonstrating significant improvements with the modified FNV model.

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Multi-objective optimization of GPU3 Stirling engine using third order analysis

Energy Conversion and Management ◽

10.1016/j.enconman.2014.06.066 ◽

2014 ◽

Vol 87 ◽

pp. 521-529 ◽

Cited By ~ 40

Author(s):

Somayeh Toghyani ◽

Alibakhsh Kasaeian ◽

Seyyed Hasan Hashemabadi ◽

Morteza Salimi

Keyword(s):

Stirling Engine ◽

Multi Objective Optimization ◽

Third Order ◽

Order Analysis ◽

Multi Objective

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Moment Restraint and Second- Order Analysis of a Cantilevered Precast Column Supported by an Isolated Footing

PCI Journal ◽

10.15554/pcij.11012002.80.93 ◽

2002 ◽

Vol 47 (6) ◽

pp. 80-93 ◽

Cited By ~ 1

Author(s):

J. Dario Aristizabal-Ochoa

Keyword(s):

Second Order ◽

Order Analysis ◽

Precast Column

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Bulk Contributions Modulate the Sum-Frequency Generation Spectra of Interfacial Water on Model Sea-Spray Aerosols

10.26434/chemrxiv.5743638 ◽

2018 ◽

Author(s):

Sandeep K. Reddy ◽

Raphael Thiraux ◽

Bethany A. Wellen Rudd ◽

Lu Lin ◽

Tehseen Adel ◽

...

Keyword(s):

Single Layer ◽

Sum Frequency Generation ◽

Second Order ◽

Interfacial Structure ◽

Sea Spray ◽

Third Order ◽

Systematic Analysis ◽

Sum Frequency ◽

Structure Of Water ◽

Frequency Generation

Vibrational sum-frequency generation (vSFG) spectroscopy is used to determine the molecular structure of water at the interface of palmitic acid monolayers. Both measured and calculated spectra display speci c features due to third-order contributions to the vSFG response which are associated with nite interfacial electric potentials. We demonstrate that theoretical modeling enables to separate the third-order contributions, thus allowing for a systematic analysis of the strictly surface-sensitive, second-order component of the vSFG response. This study provides fundamental, molecular-level insights into the interfacial structure of water in a neutral surfactant system with relevance to single layer bio-membranes and environmentally relevant sea-spray aerosols. These results emphasize the key role that computer simulations can play in interpreting vSFG spectra and revealing microscopic details of water at complex interfaces, which can be difficult to extract from experiments due to the mixing of second-order, surface-sensitive and third-order, bulk-dependent contributions to the vSFG response.

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Second-order analysis of composite beam-columns with interlayer slip

The publications of the MultiScience - XXXII. MicroCAD International Scientific Conference ◽

10.26649/musci.2018.032 ◽

2018 ◽

Author(s):

Ákos József Lengyel ◽

István Ecsedi

Keyword(s):

Composite Beam ◽

Second Order ◽

Beam Columns ◽

Order Analysis ◽

Interlayer Slip

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Discrete optimization of semi-rigid steel frames in second-order analysis

10.26678/abcm.mecsol2019.msl19-0110 ◽

2019 ◽

Author(s):

Marcos Henrique Bossardi Borges ◽

Adelano Esposito ◽

Herbert Gomes

Keyword(s):

Discrete Optimization ◽

Steel Frames ◽

Second Order ◽

Order Analysis

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Evidence for general base catalysis by protic solvents in a kinetic study of alcoholyses and hydrolyses of 1-(phenoxycarbonyl)pyridinium ions under both solvolytic and non-solvolytic conditions

Collection of Czechoslovak Chemical Communications ◽

10.1135/cccc2008164 ◽

2009 ◽

Vol 74 (1) ◽

pp. 43-55 ◽

Cited By ~ 1

Author(s):

Dennis N. Kevill ◽

Byoung-Chun Park ◽

Jin Burm Kyong

Keyword(s):

Second Order ◽

Base Catalysis ◽

Substitution Reactions ◽

Third Order ◽

Methoxy Derivative ◽

First Order ◽

General Base ◽

Protic Solvents ◽

Kinetics Of ◽

Pyridinium Ions

The kinetics of nucleophilic substitution reactions of 1-(phenoxycarbonyl)pyridinium ions, prepared with the essentially non-nucleophilic/non-basic fluoroborate as the counterion, have been studied using up to 1.60 M methanol in acetonitrile as solvent and under solvolytic conditions in 2,2,2-trifluoroethan-1-ol (TFE) and its mixtures with water. Under the non- solvolytic conditions, the parent and three pyridine-ring-substituted derivatives were studied. Both second-order (first-order in methanol) and third-order (second-order in methanol) kinetic contributions were observed. In the solvolysis studies, since solvent ionizing power values were almost constant over the range of aqueous TFE studied, a Grunwald–Winstein equation treatment of the specific rates of solvolysis for the parent and the 4-methoxy derivative could be carried out in terms of variations in solvent nucleophilicity, and an appreciable sensitivity to changes in solvent nucleophilicity was found.

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