Johann Friedrich Gülich – författare

This handbook summarizes the research results on hydraulic problems in centrifugal pump design and describes the state of the art in a comprehensive way. For this 4th edition, current research results of practical relevance were included. The selection and presentation of the material was oriented towards the needs of pump manufacturers, system planners and pump operators. Much space is devoted to understanding the physical relationships as essential knowledge for correct application. The latter is supported by more than 160 diagrams and tables for calculation and problem diagnosis .The book has been extensively updated. New additions: - A separate chapter on "Vibrations on vertical pumps".- Measurements of hydraulic exciter and impeller reaction forces- Alternating stresses and fatigue fractures of impellers- a critical study on the accuracy of numerical flow calculations of pumps- Design of inlet housings and double spirals formultistage pumps.

This handbook summarizes the research results on hydraulic problems in centrifugal pump design and describes the state of the art in a comprehensive way. For this 4th edition, current research results of practical relevance were included. The selection and presentation of the material was oriented towards the needs of pump manufacturers, system planners and pump operators. Much space is devoted to understanding the physical relationships as essential knowledge for correct application. The latter is supported by more than 160 diagrams and tables for calculation and problem diagnosis .The book has been extensively updated. New additions: - A separate chapter on "Vibrations on vertical pumps".- Measurements of hydraulic exciter and impeller reaction forces- Alternating stresses and fatigue fractures of impellers- a critical study on the accuracy of numerical flow calculations of pumps- Design of inlet housings and double spirals formultistage pumps.

This book gives an unparalleled, up-to-date, in-depth treatment of all kinds of flow phenomena encountered in centrifugal pumps including the complex interactions of fluid flow with vibrations and wear of materials. The scope includes all aspects of hydraulic design, 3D-flow phenomena and partload operation, cavitation, numerical flow calculations, hydraulic forces, pressure pulsations, noise, pump vibrations (notably bearing housing vibration diagnostics and remedies), pipe vibrations, pump characteristics and pump operation, design of intake structures, the effects of highly viscous flows, pumping of gas-liquid mixtures, hydraulic transport of solids, fatigue damage to impellers or diffusers, material selection under the aspects of fatigue, corrosion, erosion-corrosion or hydro-abrasive wear, pump selection, and hydraulic quality criteria. As a novelty, the 3rd ed. brings a fully analytical design method for radial impellers, which eliminates the arbitrary choices inherent to former design procedures. The discussions of vibrations, noise, unsteady flow phenomena, stability, hydraulic excitation forces and cavitation have been significantly enhanced. To ease the use of the information, the methods and procedures for the various calculations and failure diagnostics discussed in the text are gathered in about 150 pages of tables which may be considered as almost unique in the open literature. The text focuses on practical application in the industry and is free of mathematical or theoretical ballast. In order to find viable solutions in practice, the physical mechanisms involved should be thoroughly understood. The book is focused on fostering this understanding which will benefit the pump engineer in industry as well as academia and students.

Die Wissenschaft der Kreiselpumpen in einem BuchDie komplexen Funktionen der Kreiselpumpe regen immer wieder neue Forschungsprojekte an. Dementsprechend müssen auch erfahrene Ingenieure ihr Wissen über Pumpen ständig überprüfen und erweitern. Dieses Buch fasst die bisherigen Forschungsergebnisse zum Thema Kreiselpumpen zusammen und verschafft Lesern einen Überblick zum derzeitigen Stand der Technik. Dabei liegt der Fokus auf hydraulischen Problemen, die es beim Bau von Pumpenanlagen zu überwinden gilt. Pumpensysteme in Theorie und PraxisDie aktuelle Ausgabe bezieht viele Erkenntnisse zur Strömungslehre mit ein, die Wissenschaftler in den letzten Jahren gewonnen haben. Das Handbuch zielt jedoch nicht allein darauf ab, theoretische Grundlagen zu vermitteln. Vielmehr zeigt es mithilfe von anschaulichen Beispielen, wie die Grundlagen der Hydraulik praktisch angewandt werden. Davon profitieren vor allem Fachkräfte in folgenden Bereichen:• Pumpenbau• Anlagenplanung• PumpenbetriebNur wenn Ingenieure physikalische Abläufe richtig erfassen, können sie daraus Lösungsansätze für konkrete Problemstellungen entwickeln. Zu diesem Zweck finden Leser auf 160 Tafeln und Tabellen alle wichtigen Fakten und Zusammenhänge. Hydraulische Kräfte verstehen und anwendenFür die fünfte Ausgabe hat der Autor Johann F. Gülich sein Buch über Kreispumpen umfassend überarbeitet. Zu den thematischen Ergänzungen zählen:• Schwingungen an Vertikalpumpen• Messungen zu hydraulischen Erreger- und Laufrad-Reaktionskräften• Wechselspannungen und Ermüdungsbrüche von Laufrädern• eine kontroverse Untersuchung zur Genauigkeit der Berechnungen von 3D-Strömungsvorgängen• Auslegung von Einlaufgehäusen und Doppelspiralen für mehrstufige Pumpen