Computing and Systems Engineering

Advances in Mathematical Programming Models for Enterprise-wide Optimization

CAST Division

Apr 26, 2012

Ignacio Grossmann

Enterprise-wide optimization (EWO) has become a major goal in the process industries due to the increasing pressures for remaining competitive in the global marketplace.

Evaluation of Key Parameters for Designing Effective Water Curtain Systems for LNG Facilities Using Computational Fluid Dynamics

Apr 5, 2012

Byung Kyu Kim, Byung Kyu Kim

Concerns over public safety and security of an accidental LNG spill have motivated the continued study of LNG mitigation measures. Forced dispersion of LNG vapors using a water curtain system has been proven to be effective in reducing the LNG vapor exclusion zone by enhancing the dispersion...

Modeling of LNG Spills Into Trenches and Troughs

Apr 5, 2012

Nicolas F. Ponchaut

Trenches and troughs are commonly used in LNG storage and transfer facilities to contain potential LNG spills. The trenches are concrete-lined rectangular channels dug into the ground. They are typically slightly inclined from the horizontal to direct the flow of LNG towards the sump and they are...

Source Term Modeling of Vapor Cloud Formation During a Cryogenic Liquid Spill Based on a Boiling Model by CFD Method

Apr 4, 2012

Yi Liu

The formation of a flammable vapor cloud following a spill of cryogenic liquids, such as ammonia and LNG (liquefied natural gas), on a ground or water includes significant toxic, fire or explosion hazards. The ability to predict the consequences of such an event is crucial to perform proper risk...

Theoretical Study of Expansion Foam Application on LNG Pool Using Computational Fluid Dynamics

Apr 4, 2012

Bin Zhang

LNG facilities could harm the personnel on site and jeopardize local communities nearby, due to the flammability and dense gas behaviors of LNG. Nowadays, the growing concern with chemical process safety leads to the timely establishment of regulations and standards regarding to consequence...

A Numerical Study On Bio-Oil Gasification Using A Multicomponent Approach

Oct 17, 2011

Song-Charng Kong

A Numerical Study on Bio-Oil Gasification Using A Multicomponent Approach Bio-oil, also called pyrolysis oil, is a complex biorenewable fuel produced from fast pyrolysis of biomass. Since bio-oil is carbon dioxide neutral, it can be an ideal replacement for petroleum fuel to be used in many kinds...

Computational Modeling and On-Sun Model Validation for a Multiple Tube Solar Reactor with Reflective Cavity Walls

Oct 17, 2011

Janna Martinek

A three-dimensional steady state computational fluid dynamics model is developed for a solar receiver consisting of a reflective cavity with a windowed aperture enclosing an array of five tubes. The computational model couples radiative transfer with fluid flow, heat transfer, mass transfer, and...

Simulation Study of Different Alternatives for Isoamyl Butyrate Production by Using Aspen Plus®

Oct 17, 2011

Jairo A. Duran

Simulation Study of Different Alternatives for Isoamyl Butyrate Production by Using Aspen Plus ® Jairo Duran, Karen Cañón, Iván Gil, Gerardo Rodríguez, Julio Vargas Grupo de Procesos Químicos y Bioquímicos. Department of Chemical and Environmental Engineering. Universidad Nacional de Colombia...

Simulation and Economics of Biodiesel Production From Microbial Lipids

Oct 17, 2011

Ramalingam Subramaniam

In this work, production of lipid from Lypomyces starkeyi on soluble sweet potato starch was simulated in Aspen Plus simulation. A kinetic model based on experimental results of medium optimization and high density cultivation was used for cell growth and lipid production. The simulation...

Mechanistic Modeling of Fast Pyrolysis of Cellulose to Predict Bio-Oil Composition

Oct 16, 2011

Vinu Ravikrishnan

Fast pyrolysis, a potential strategy for the production of transportation fuels from biomass, involves a complex network of competing reactions, which result in the formation of bio-oil, non-condensable gaseous species, and solid char. Bio-oil is a mixture of anhydro sugars, furan derivatives, and...

Flare Minimization Via Dynamic Simulation

Mar 15, 2011

Kuyen Li

Flaring in chemical process industry (CPI) is an important method to protect equipment and personnel safety during the process upset and the chemical plant turnaround. However, excessive flaring emits lots of carbon dioxide as well as air pollutants, which cause negative environmental and social...

Teach Yourself the Basics of Aspen Plus

January, 2011

Aspen Plus is on of the most popular process simulation software programs used industrially and academically. Though the software is available at many corporations and universities, there are no textbooks which are dedicated to teaching the step-by-step use of the software. This book is designed to...

Framing Workshop Objectives for Determining AIChE Institute Roles In Simulation Based Engineering and Science

Nov 8, 2010

Bond Calloway

This opening presentation will describe plans in this workshop session to examine AIChE's roles as an institute in Simulation Based Engineering & Science. Roles could include workshops, publications, education both student and public, grants and sponsorships, programming, and roles in national...

Unit Operations for Smart Nanomanufacturing

Nov 8, 2010

Roger T. Bonnecaze

There is a chasm between promising nanotechnological advances in the laboratory and commercial manufacturing. Many techniques have been developed to produce exquisitely controlled nanopatterned surfaces with amazing and potentially valuable properties. These methods, however, are almost always on...

Sustainability and Systems Engineering: Reducing the Carbon Footprint of Chemical Plants

Nov 8, 2010

Jeffrey J. Siirola

Despite some carbon dioxide producing chemistries, Most CO2 emissions in the chemical industry result from the combustion of carbonaceous fuels. Reducing the carbon footprint of chemical plants then involves two strategies: reducing process energy requirements, and reducing the carbon emissions...

Open Discussion On High Performance Computing in Chemical Engineering

Nov 8, 2010

Sharon C. Glotzer

This will be an open discussion with the speakers and attendees to identify key elements of high performance computing for innovation, prediction, substitution for physical experiment. An objective will be define actions and approaches in which Simulation Based Engineering and Science can benefit...

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