scholarly journals Stress Calculation on Swirling Flow in Suction Pipe of a Centrifugal Pump

1965 ◽  
Vol 31 (228) ◽  
pp. 1222-1229
Author(s):  
Mitsukiyo MURAKAMI ◽  
Naomichi HEYA
Keyword(s):  
Centrifugal Pump ◽  
Swirling Flow ◽  
Stress Calculation ◽  
Suction Pipe

scholarly journals Stress Calculation on a Swirling Flow in Suction Pipe of Centrifugal Pumps

1966 ◽  
Vol 9 (34) ◽  
pp. 352-360
Author(s):  
Mitsukiyo MURAKAMI ◽  
Naomichi HEYA
Keyword(s):  
Swirling Flow ◽  
Centrifugal Pumps ◽  
Stress Calculation ◽  
Suction Pipe

Experimental Study of the Flow in the Suction Pipe of a Centrifugal Pump at Partial Flow Rates in Unsteady Conditions

1999 ◽  
Vol 121 (3) ◽  
pp. 291-295 ◽  
Author(s):  
S. Bolpaire ◽  
J. P. Barrand
Keyword(s):  
Centrifugal Pump ◽  
Flow Rate ◽  
Static Pressure ◽  
Pressure Measurements ◽  
Flow Rates ◽  
Suction Pipe ◽  
Start Up ◽  
Test Loop ◽  
Fast Start ◽  
Operational Range

The operational range and the performances of pumps are limited by the occurrence of backflow and prerotation in the suction pipe as the flow rate is reduced. This paper presents the study of static pressure measurements and visualizations in the suction pipe, near the inlet of a centrifugal pump, at partial flow rates, in steady conditions, and during a fast start-up of the pump. The tests were carried out in water on the DERAP© test loop of the ENSAM Lille laboratory. Standard methods allowed to determine the recirculation critical flow rate. A visualization method showed that the axial extent of the recirculation and the prerotation with the flow rate is considerably reduced during a fast start-up compared to steady conditions.

scholarly journals STUDI VARIASI JENIS MATERIAL TALI PADA MODIFIKASI ALAT PENGUKURAN TORSI POMPA SENTRIFUGAL

Otopro ◽  
2021 ◽  
Vol 16 (2) ◽  
pp. 50
Author(s):  
Taufik Afandi ◽  
Edi Widodo ◽  
Prantasi Harmi Tjahjanti ◽  
Iswanto Iswanto
Keyword(s):  
Elastic Modulus ◽  
Tensile Test ◽  
Centrifugal Pump ◽  
Modulus Of Elasticity ◽  
Stress Calculation ◽  
A Value ◽  
Polypropylene Monofilament ◽  
The Wire

The focus of this research is to analyze variations in the type of rope material and size as a link for measuring the force on a centrifugal pump, namely to find out the type of material and the size of the rope that is suitable to minimize the loss of force contained in the wire. To find out the type of calculation and comparison of the values for various types of material. From the tensile test that has been done, the highest UTS (Ultimate Tensille Stress) value was obtained in a polypropylene monofilament rope specimen with a stress value of 602.17 kgf with 382.14% elongation. The highest stress calculation value data was obtained by the Polypropylene monofilament rope specimen with a value of 738,85 at elongation to 360%. The highest modulus of elasticity obtained by Nylon rope was 4,564  . This shows that the modulus of elasticity is inversely proportional to the stress value, which was the stress value of nylon straps that was the highest compared to other specimens but had the highest elastic modulus value among other specimens.

Forced and Self-Excited Oscillations in Propellant Lines

1969 ◽  
Vol 91 (4) ◽  
pp. 671-677 ◽  
Author(s):  
W. Zielke ◽  
E. B. Wylie ◽  
R. B. Keller
Keyword(s):  
Centrifugal Pump ◽  
Hydraulic System ◽  
Analytical Techniques ◽  
Experimental Results ◽  
Distributed Parameter ◽  
Rocket Engines ◽  
Pressure Oscillations ◽  
Discharge Pipe ◽  
Suction Pipe ◽  
Parameter Representation

Analytical techniques used to model the dynamics of propellant feed systems of rocket engines are presented as well as experimental results which provide verification. The laboratory hydraulic system, consisting of suction pipe, centrifugal pump, and discharge pipe, provides longitudinal fluid oscillations which are analyzed by use of linear methods employing a distributed parameter representation of the pipes. Of particular interest is the effect of the pump upon pressure oscillations when the pump is operating under cavitating conditions. A self-excited instability caused by the interaction between hydraulic and structural portions of the system is also described.

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