Determination of Natural Frequency of Vibration and Deformation of Centrifugal Pump Open Impeller for Performance Improvement
Abstract
The researchers, studied determination of natural frequency of vibration and deformation of centrifugal pump open impeller for performance improvement, using finite element simulation method. Open impeller model was created using Autodesk inventor with assigned material as Stainless Steel to reduce corrosion and peeling effect. Motor shaft hole was created with M24×H200 cylinder having a right hand ANSI metric thread profile. The diameter of the open impeller was 600 mm; impeller hub diameter was 200mm with central shaft hole of 60mm. Impeller model retained 6 blades with a maintained thickness of 6 mm and height of 8 mm. The radius of impeller at inlet and outlet were 12 mm and 24 mm respectively. The vanes have 80 degrees inlet angle and 130 degrees outlet angle respectively. Impeller model was subjected to turning moment of 200 N mm with a victor fluid force of 6 N acting at XYZ directions, angular velocity of 4 deg?s and angular acceleration of 5.4deg?s^2 with fixed rotational constraints. Pump impeller showed high vibration frequency necessary for heavy duty rotor dynamic pumps. Results showed that the values of vibration frequency of the modeled impeller made of Stainless Steel material was found to be 3395.59 Hz by simulation and 7.4312 Hz by computation whereas maximum deformation was found to be 4.5 mm. Hence, to operate pumps within safety limits, the periodic external load of the pump must be lower than 169.78Hz and 6 N in line with the given conditions.
Keywords
Vibration Frequency, Impeller, Deformation, Finite Element Analysis, Turning Moment, Constraints, Fluid Impact
Citations
IRE Journals:
Ibezim Joseph M , Nkwor Chimezie Agbafor , Efosa Obaseki , Ekanem Oto-obong Aniefiok , Ewurum Tennison I
"Determination of Natural Frequency of Vibration and Deformation of Centrifugal Pump Open Impeller for Performance Improvement" Iconic Research And Engineering Journals Volume 7 Issue 10 2024 Page 74-79
IEEE:
Ibezim Joseph M , Nkwor Chimezie Agbafor , Efosa Obaseki , Ekanem Oto-obong Aniefiok , Ewurum Tennison I
"Determination of Natural Frequency of Vibration and Deformation of Centrifugal Pump Open Impeller for Performance Improvement" Iconic Research And Engineering Journals, 7(10)
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