Erschließung der automatischen Strömungsoptimierung zur Lösung von Gestaltungsaufgaben im Wasserbau

Today, numerical flow models are widely used tools in hydraulic engineering, as for the design of turbine intakes. In this field, problems are often closely linked to the question of an optimal solution depending on various influences. With the connection of an optimization algorithm and a flow model the tool of automatic optimization is created, which can be used to find the optimal solution. The intention of this thesis is to answer the question, if automatic optimization is a trustworthy tool and to what extend it can contribute to the design process in hydraulic engineering. The various types of problems in hydraulic engineering demand a flexible tool, which can be adapted to a specific application. A concept was developed, which easily allows the exchange of the modules of the automatic optimization. A comprehensive error analysis shows, how errors can impede a successful termination of the optimization process. In order to ensure a validated optimization, a stepwise process of error control was developed. The separation pier of a small water power plant was optimized to show the practical applicability of the new tool. The horizontal and the vertical shape of the pier were subject to optimization. In comparison to other, well known pier geometries the optimized contours offer an additional reduction of flow losses at the trash-rack. With the help of the automatic optimization a pier contour was identified, which also shows good properties regarding constructional demands

Erschließung der automatischen Strömungsoptimierung zur Lösung von Gestaltungsaufgaben im Wasserbau

Today, numerical flow models are widely used tools in hydraulic engineering, as for the design of turbine intakes. In this field, problems are often closely linked to the question of an optimal solution depending on various influences. With the connection of an optimization algorithm and a flow model the tool of automatic optimization is created, which can be used to find the optimal solution. The intention of this thesis is to answer the question, if automatic optimization is a trustworthy tool and to what extend it can contribute to the design process in hydraulic engineering. The various types of problems in hydraulic engineering demand a flexible tool, which can be adapted to a specific application. A concept was developed, which easily allows the exchange of the modules of the automatic optimization. A comprehensive error analysis shows, how errors can impede a successful termination of the optimization process. In order to ensure a validated optimization, a stepwise process of error control was developed. The separation pier of a small water power plant was optimized to show the practical applicability of the new tool. The horizontal and the vertical shape of the pier were subject to optimization. In comparison to other, well known pier geometries the optimized contours offer an additional reduction of flow losses at the trash-rack. With the help of the automatic optimization a pier contour was identified, which also shows good properties regarding constructional demands

Evaluating point and process fugitive emission sources of particulate matter from feed mills associated with cattle feed yards

Due to the character of the original source materials and the nature of batch digitization, quality control issues may be present in this document. Please report any quality issues you encounter to [email protected], referencing the URI of the item.Includes bibliographical references: p. 90-92.Issued also on microfiche from Lange Micrographics.Feed mills associated with cattle feed yards are experiencing the effects of the Clean Air Act Amendments (CAAAS) of 1990 through the implementation of Title V of the act. This law requires any feed mill that qualifies as a major pollutant source (i.e. by emitting more than 90.7 tonnes (100 tons) of a regulated pollutant annually) to obtain from its state air pollution regulatory agency (SAPRA) a federal operating permit (FOP). The results from this study will be used to develop scientifically based emission factors for cyclones separating steam flaked grain at feed mills associated with cattle feed yards, quantify the emissions from various sizes of simulated model feed mills using process fugitive emission factors from a study recently conducted at Texas A&M University and newly developed point source emission factors and use dispersion modeling to determine if these emissions will comply with EPA's National Ambient Air Quality Standards (NAAQS). Current methods of determining annual emissions for a feed mill operation associated with a cattle feed yard are in error due to inaccurate emission factors. The emission factors developed from this study will be compared with those currently used to regulate feed mills associated with cattle feed yards