Modifications to MacCormack's 2-D Navier-Stokes Compression Ramp Code for Application to Flows with Axes of Symmetry and Wall Mass Transfer

Modifications to MacCormack's 2-D Navier-Stokes Compression Ramp Code for Application to Flows with Axes of Symmetry and Wall Mass Transfer
Title Modifications to MacCormack's 2-D Navier-Stokes Compression Ramp Code for Application to Flows with Axes of Symmetry and Wall Mass Transfer PDF eBook
Author Richard G. Hindman
Publisher
Pages 60
Release 1981
Genre Axial flow compressors
ISBN

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A computer code for solving the two-dimensional compressible Navier-Stokes equations governing the supersonic/hypersonic flow over a compression ramp as developed by MacCormack was extended to apply to axisymmetric flows over cylinder-flare shapes. Two new operators were developed for this extension, one of which was found to produce an upper stability bound on the step size. This bound is proportional to the Prandtl number and inversely proportional to the ratio of thermal capacities of the fluid times the maximum value over all grid points of the kinematic viscosity scaled by the radial coordinate value. Additionally, the computer code was modified to allow for the option of wall mass transfer. This required reformulation of the hyperbolic fine mesh operator because of an assumption in the development of the original operator that the wall-normal velocity in the fine mesh is much less than the sound speed. Numerical results are presented for a particular hollow cylinder-flare configuration, and comparisons are made with the experimental data of Roshko and Thomke and with the results of a boundary-layer code attributable to Patankar and Spalding. (Author).

Application of Modified Atmosphere Packaging on Quality of Selected Vegetables

Application of Modified Atmosphere Packaging on Quality of Selected Vegetables
Title Application of Modified Atmosphere Packaging on Quality of Selected Vegetables PDF eBook
Author Achilleas Bouletis
Publisher Springer
Pages 99
Release 2014-11-19
Genre Technology & Engineering
ISBN 331910232X

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This Brief critically reviews the applied techniques in all the studied vegetables and summarizes the effect of modified atmosphere packaging (MAP) in all the quality parameters. In a brief introduction chemical and microbiological parameters that affect shelf life are mentioned, followed by a definition of modified atmosphere packaging. The referred vegetables are categorized into 10 categories: roots, tubers, leafy vegetables, fruits-vegetables, bulbs, stems and shoots, flowers, seeds, fungi and other. The effect of selected MAP applications on the shelf life of the vegetables is also highlighted. Along with atmosphere modification, several storage parameters such as temperature, several pretreatments, film permeability or light and dark storage conditions are studied and their interaction on the quality of the product is also taken under consideration. The increasing demand for healthier and “safer” foods has led the food industry in pursuit of storage technologies that will serve the primary role of storage life prolongation but with no sacrifice on nutritional value and without the presence of additives. MAP is a storage technique that has already proven to be effective in extending the shelf life of the product by reducing respiration rate and preserving all its quality characteristics. Due to many physiological factors that affect the shelf life of minimally processed vegetables (respiration rate, ethylene production, maturation and ripening) the selection of the ideal storage parameters (gas mixture, storage temperature, packaging film, and treatments prior to packaging) of MAP is a challenging procedure and must be planned carefully.

Field testing, application of combustion modifications to control pollutant emissions from industrial boilers

Field testing, application of combustion modifications to control pollutant emissions from industrial boilers
Title Field testing, application of combustion modifications to control pollutant emissions from industrial boilers PDF eBook
Author G. A. Cato
Publisher
Pages 274
Release 1976
Genre Air
ISBN

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"Code of Massachusetts regulations, 2001"

Title "Code of Massachusetts regulations, 2001" PDF eBook
Author
Publisher
Pages 2838
Release 2002
Genre Administrative law
ISBN

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Archival snapshot of entire looseleaf Code of Massachusetts Regulations held by the Social Law Library of Massachusetts as of January 2020.

Loan Modification For Dummies

Loan Modification For Dummies
Title Loan Modification For Dummies PDF eBook
Author Ralph R. Roberts
Publisher John Wiley & Sons
Pages 316
Release 2009-08-31
Genre Business & Economics
ISBN 0470501995

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The crucial information you need to secure a reliable loan modification and save your home Behind on your mortgage payments? Worried about losing your home? Don't panic. Loan Modification For Dummies gives you the reliable, authoritative, easy-to-understand guidance you need to apply for and secure a loan modification that lowers your monthly house payment and keeps you in your home. This practical, plain-English guide leads you step by step through the loan modification process, from contacting your lender to applying for a loan modification, evaluating the lender's initial offer, and negotiating a modification that lowers your monthly payment while helping you catch up on any past-due amounts. You'll learn how to communicate with your bank or loan servicer, recognize and avoid loan-modification scams, and find a knowledgeable loan modification specialist, if you choose not to do it yourself. Advice on determining whether you're likely to qualify for your lender's loan modification program Guidance on preparing and submitting a loan modification application that improves your chances of success Helps you figure out a monthly payment you really can afford Tips on modifying your loan even when you owe more than your home's current market value Negotiation advice for securing the best possible terms and lowest monthly payment Resources for contacting your lender, obtaining free or affordable third-party assistance, and getting government agencies on your side Read Loan Modification For Dummies and start saving your home today.

Polymer Surfaces and Interfaces: Characterization, Modification and Application

Polymer Surfaces and Interfaces: Characterization, Modification and Application
Title Polymer Surfaces and Interfaces: Characterization, Modification and Application PDF eBook
Author Kash L. Mittal
Publisher CRC Press
Pages 435
Release 2023-01-06
Genre Science
ISBN 1466563702

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Polymeric materials are used for a legion of applications in a wide array of technological areas, and their proper surface/interface characteristics are of cardinal importance for their applications. Therefore, the need to characterize polymer surfaces/interfaces and their suitable modification to impart desired characteristics is quite patent. This book chronicles the proceedings of the Symposium on Polymer Surfaces and Interfaces: Characterization, Modification and Application held as a part of the Society of Plastics Engineers Annual Technical Conference, Boston, May 7--11, 1995. The articles in this book address many aspects of polymer surfaces and interfaces. Topics covered include: various ways (chemical, photochemical, laser, flame, corona) to modify polymer surfaces; modification of contact lens surfaces; various ways to analyze/characterize polymer surfaces; metal/polymer interfaces; metal/polyimide adhesion; metal/self-assembled organic monolayer interfaces; polymer alignment layers for liquid crystals; alignment of liquid crystal surfaces; polyimide alignment layers; molecular re-orientation of polymer surfaces; plasma polymerized organic coatings; epoxy/fiber interphase; epoxy underfill materials for packaging integrated circuits; transport in polymers; polymer miscibility; and cell adhesion.

Ecological Aspects for Application of Genetically Modified Mosquitoes

Ecological Aspects for Application of Genetically Modified Mosquitoes
Title Ecological Aspects for Application of Genetically Modified Mosquitoes PDF eBook
Author W. Takken
Publisher Springer Science & Business Media
Pages 248
Release 2003-07-31
Genre Science
ISBN 9781402015854

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This book is the reflection of a workshop, held in June 2002. Experts on mosquito ecology met for the first time to discuss the current knowledge of mosquito ecology with respect to GM-insect technology. Emphasis of the workshop was on evaluating how human health and natural ecosystems, including target wild-mosquito populations, will respond to the invasion of GM vectors. This volume will stimulate discussion by clearly showing the importance of vector ecology for prevention of vector-borne diseases.