scholarly journals GAMES: A Dynamic Model Development Workflow for Rigorous Characterization of Synthetic Genetic Systems

2022 ◽  
Author(s):  
Kate E. Dray ◽  
Joseph J. Muldoon ◽  
Niall M. Mangan ◽  
Neda Bagheri ◽  
Joshua N. Leonard
Keyword(s):  
Dynamic Model ◽  
Model Development ◽  
Genetic Systems

Treatment system response to transient AOX (adsorbable organic halogen) loadings

1997 ◽  
Vol 35 (2-3) ◽  
pp. 85-91
Author(s):  
D. A. Barton ◽  
J. D. Woodruff ◽  
T. M. Bousquet ◽  
A. M. Parrish
Keyword(s):  
Paper Industry ◽  
Model Development ◽  
Operating Conditions ◽  
System Response ◽  
Additional Information ◽  
Organic Halogen ◽  
Aox Removal ◽  
Variable Operating Conditions ◽  
Plant Shutdown

If promulgated as proposed, effluent guidelines for the U.S. pulp and paper industry will impose average monthly and maximum daily numerical limits of discharged AOX (adsorbable organic halogen). At this time, it is unclear whether the maximum-day variability factor used to establish the proposed effluent guidelines will provide sufficient margin for mills to achieve compliance during periods of normal but variable operating conditions within the pulping and bleaching processes. Consequently, additional information is needed to relate transient AOX loadings with final AOX discharges. This paper presents a simplistic dynamic model of AOX decay during treatment. The model consists of hydraulic characterization of an activated sludge process and a first-order decay coefficient for AOX removal. Data for model development were acquired by frequent collection of influent and effluent samples at a bleach kraft mill during a bleach plant shutdown and startup sequence.

Dynamic model development based on experimental investigations of acoustically levitated suspension droplets

2021 ◽  
Vol 171 ◽  
pp. 121057
Author(s):  
Moritz Buchholz ◽  
Johannes Haus ◽  
Fritz Polt ◽  
Swantje Pietsch ◽  
Michael Schönherr ◽  
...  
Keyword(s):  
Dynamic Model ◽  
Model Development ◽  
Experimental Investigations

Dynamic model development of a fixed speed stall control wind turbine at start-up

2006 ◽  
Author(s):  
R.R. Peters ◽  
D. Muthumuni ◽  
T. Bartel ◽  
H. Salehfar ◽  
M. Mann
Keyword(s):  
Wind Turbine ◽  
Dynamic Model ◽  
Model Development ◽  
Start Up ◽  
Stall Control

Material Model Development of Sandwich Composite: Numerical-Experimental Investigation of Head Dummy Impacting at Vehicle Interior Components

2019 ◽  
Vol 827 ◽  
pp. 55-60
Author(s):  
A. Vettorello ◽  
G.A. Campo
Keyword(s):  
Numerical Models ◽  
Fibre Composite ◽  
Model Development ◽  
Material Model ◽  
Sandwich Composite ◽  
Crash Analysis ◽  
Vehicle Interior ◽  
Polymeric Foam ◽  
Glass Fibre Composite

This paper shows the applicability of a non-linear Finite Element (FE) methodology to analyse the elasto-plastic behaviour and the energy absorption of a padding noise-protection material applied to the vehicle interior components. This material is a sandwich built from alternating layers of polymeric foam and of glass fibre composite. The approach considers two design steps. The first one involves the experimental characterization of the material while the latter deals with the assessment of the numerical models validated for a full-vehicle crash analysis.

Pseudo-Dynamic Modeling to Evaluate a Remote Gas-to-Liquids Process

2011 ◽  
Vol 6 (1) ◽  
Author(s):  
Glen Hay ◽  
John Nighswander
Keyword(s):  
Steady State ◽  
Dynamic Model ◽  
Dynamic Modeling ◽  
Model Development ◽  
Liquid Fuels ◽  
Sensitivity Analyses ◽  
Small Scale ◽  
Process Viability ◽  
Gas To Liquids ◽  
Steady State Simulation

A project team was given the task of evaluating various technology options for design of a small-scale gas-to-liquids (GTL) process operated remotely at or near an individual gas source. For this study, small-scale plants were considered those producing between 100 and 500 barrels per day of liquid fuels. In addition, being remote enforced limitations on utility sources available to the plant site such as water and grid power. A secondary goal was development of a dynamic model of the plant to use in operator training. To accomplish these objectives, the authors investigated the suitability of a process-simulation application. The conceptual design of the GTL unit included many different possibilities, such as front-end design, back-end design, heat integration, and recycling of materials. Complications associated with plant start-up and shutdown, utilities, process reliability, and economics were included in the decision-making process. The authors present selective results from a steady-state model and sensitivity studies. Considerations for the development of the dynamic model included both a fully rigorous dynamic model and a pseudo-dynamic steady-state-based model; results of the latter model are provided. The study concluded that an industrial steady-state simulation tool provided sufficient flexibility to complete the material and energy-balance calculations, sensitivity analyses, and pseudo-dynamic modeling. This study yielded significant insights into the importance of model assumptions and their impact on the overall process viability. The pseudo-dynamic model also provided insight for improving the process control design. During the work completed the authors determined that the object-oriented structure adopted for the model enabled an efficient, rapid model development.

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