منابع مشابه
Waterhammer Caused by Intermittent Pump Failure in Pipe Systems Including Parallel Pump Groups
The use of pumps linked in parallel or series in large scale pipe systems is usually inevitable, to meet the required head and discharge. Transient flow occurs following a pump failure in a pump group as a result of variations in the flow rate. This research is an investigation about waterhammer caused by one or more pump-switch off in a pump group when they are connected in parallel. The opera...
متن کاملA precursor in waterhammer analysis – rediscovering
In 1883 Johannes von Kries published the theory of waterhammer in a study of blood flow in arteries. He derived the “Joukowsky formula” before Joukowsky (1898) and Frizell (1898) did. He considered skin friction in unsteady laminar flow and thus derived formulas for wave attenuation and line pack. The theory was confirmed by experimental results obtained in rubber hoses. In 1892 he published th...
متن کاملGeneration of Cardiomyocytes in Pipe-Based Microbioreactor Under Segmented Flow.
BACKGROUND/AIMS Embryonic stem (ES) cells have got a broad range differentiation potential. The differentiation is initiated via aggregation of non-differentiated ES cells into embryoid body (EB) capable of multi-lineage development. However experimental variables present in standard differentiation techniques lead to high EB heterogeneity, affecting development into the cells of desired lineag...
متن کاملFinite Element Analysis Of The Precracked Line Scratch Test
In MEMS packages and silicon devices, the adhesion of interconnects to the substrate is a critical reliability issue. A Precracked Line Scratch Test (PLST) is among one of the available tests to measure the thin line adhesion. In the test, an initial crack is introduced at the interface between the thin line and the substrate. The line is then loaded from the precracked end. The load is recorde...
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ژورنال
عنوان ژورنال: Nuclear Engineering and Design
سال: 1995
ISSN: 0029-5493
DOI: 10.1016/0029-5493(95)01027-f