Effect of Blade Angle on Cavitation Phenomenon in Axial Pump

Mostafa, Nabil H.; Adel, Mohamed

doi:10.4172/2168-9873.1000112

Cited by 2 publications

(6 citation statements)

References 3 publications

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“…In this work, in order to valid the axial pump numerical data, closed flow loop rig done by Mostafa, N. H. [15] have been selected as the research object. The experimental test for the axial flow pump was offered with a different set of equipment and instruments with uncertainty value for each instrument as described at Table 1.…”

Section: Fig 1 Steps Of Computational Methodology Using Cfd Techniquementioning

confidence: 99%

“…The experimental test for the axial flow pump was offered with a different set of equipment and instruments with uncertainty value for each instrument as described at Table 1. Furthermore, specifications of a pump are listed in Table 2 [15]. The speed conditions of the pump was by control panel.…”

Section: Fig 1 Steps Of Computational Methodology Using Cfd Techniquementioning

confidence: 99%

“…The boundary condition simulation is set at the inlet part with variety of inlet velocity, and the outflow is set as outlet condition [16][17][18][19][20]. The pump experimental data are got from Mostafa, N. H. [15] as mentioned earlier. The turbulence model has been modelled with epsilon k-ε model.…”

Section: Computational Flow Domains For the Axial Pump And Boundary Conditionsmentioning

confidence: 99%

See 2 more Smart Citations

Numerical Investigations of Transient Flow Characteristic in Axial Flow Pump and Pressure Fluctuation Analysis Based on the CFD Technique

Al‐Obaidi¹,

Iraq²,

Mohammed³

2019

JESTR

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The technique of Computational fluid dynamics was applied to investigate flow field analysis including static pressure, axial, radial and tangintial velocities vectors as well as fluctuations of pressure analyses in axial pump. Pressure fluctuations are the core causes increase noise level and vibration. For studying pressure mechanism fluctuation in pump changed monitoring rotating points are stalled at an impeller blade. Standard k-epsilon turbulence model and sliding mesh technique are adopted by using CFD. The numerical investagation found that pressure in an axial flow pump rises near inlet impeller region to outer part. Higher value of pressure was take place at impeller outlet region. Also, the computational analysis noted that the when a pump functions in larger mass flow, the area of high-pressure in impeller outlet decreases. Moreover, under low flow rate (5 l/min) in middle surface the high-speed area appears near or closed blade and blade tip region for all velocities under investigations. Furthermore. fluctuations of pressure for different point under different flows has four valleys and peaks the similar number of axial impeller passages blades. The results foun that there are two imprtant regions the first one ispositive and second one is negative pressures, this happends owing to this negative pressure area has lower pressure value. Therefore, due to the decline in the water pressure in this area may cause cavitation.

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Section: Fig 1 Steps Of Computational Methodology Using Cfd Techniquementioning

confidence: 99%

Section: Fig 1 Steps Of Computational Methodology Using Cfd Techniquementioning

confidence: 99%

Section: Computational Flow Domains For the Axial Pump And Boundary Conditionsmentioning

confidence: 99%

See 1 more Smart Citation

Numerical Investigations of Transient Flow Characteristic in Axial Flow Pump and Pressure Fluctuation Analysis Based on the CFD Technique

Al‐Obaidi¹,

Iraq²,

Mohammed³

2019

JESTR

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show abstract

“…To validate the axial pump numerical calculation results with experimental data, in this study, the experimental rig system achieved by Mostafa et al 24 has been chosen as the research object. The experimental test for the axial flow pump consists of a different set of instruments and equipment, as listed in Table 3.…”

Section: Computational Techniquementioning

confidence: 99%

“…The experimental test for the axial flow pump consists of a different set of instruments and equipment, as listed in Table 3. Furthermore, the specifications of the axial pump are summarized in Table 4 24 …”

Section: Computational Techniquementioning

confidence: 99%

Investigation of the influence of various numbers of impeller blades on internal flow field analysis and the pressure pulsation of an axial pump based on transient flow behavior

Al‐Obaidi

2020

Heat Trans

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In the current study, the flow behavior in an axial pump through changing the number of impeller blades is analyzed. Due to the number of blades being very important geometrical parameters in the pump, the study of the influence of various numbers of blades on flow and pressure pulsation in the pump is carried out using the computational fluid dynamics technique. The sliding mesh with the standard turbulence k-ε model is used to investigate the unsteady flow with several flows and impeller blades. Pump performance prediction results with available experimental data indicate reasonable and good agreement with each other. Static pressure, shear stress, and different velocity compounds are qualitatively analyzed. Moreover, the fluctuation pressure and average pressure under different operating conditions and impeller blades are quantitatively investigated. The numerical results show that the impeller blade has a high impact on pressure, shear stress, magnitude velocity, axial velocity, radial velocity, tangential velocity, and average pressure. Furthermore, this numerical study provides good and useful information for the hydraulic design of axial pumps. K E Y W O R D Saverage pressure, axial flow pump, number of impeller blade, pressure fluctuation, shear stress, static pressure

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Effect of Blade Angle on Cavitation Phenomenon in Axial Pump

Cited by 2 publications

References 3 publications

Numerical Investigations of Transient Flow Characteristic in Axial Flow Pump and Pressure Fluctuation Analysis Based on the CFD Technique

Numerical Investigations of Transient Flow Characteristic in Axial Flow Pump and Pressure Fluctuation Analysis Based on the CFD Technique

Investigation of the influence of various numbers of impeller blades on internal flow field analysis and the pressure pulsation of an axial pump based on transient flow behavior

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