Optimum Radial Tip Clearance of Gear Pump (2nd Report)
نویسندگان
چکیده
منابع مشابه
Effect of Tip Clearance on Hydraulic Performance of Water-jet Pump
The k-ω Shear Stress Transport (SST) turbulence model is adopted to study the hydrodynamic performance of the water-jet axial pump which is applied in Unmanned Surface Vehicle (USV). The numerical simulation of the whole passage of the water-jet pump is carried out for four different tip clearance with δ = 0.3 mm, δ = 0.8 mm, δ = 1 mm and δ = 1.4 mm. And the results, in term of external charact...
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Tip clearance between blade end and shroud is inevitable in pump operation and of great importance on pump energy performance and pressure fluctuation. As the tip clearance size increases, the head and efficiency of the mixed flow pump drop accordingly. The simulation results show that the development of a leakage vortex is observed as the tip clearance increases, and the trajectory of this lea...
متن کاملInfluence of Tip Clearance on Pressure Fluctuation in Low Specific Speed Mixed-Flow Pump Passage
To explore the influence of tip clearance on pressure fluctuation in a low specific speed mixed-flow pump, tip clearances δ of 0.25 mm, 0.75 mm and 1.00 mm, along with no tip clearance, were selected. The reliability of the simulation was verified by comparison with the experimental data of external characteristics and fluctuation in the guide vane passage. Through ANSYS-CFX, MATLAB code and fa...
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The energy performance and radial force of a mixed flow pump with symmetrical and unsymmetrical tip clearance are investigated in this paper. As the tip clearance increases, the pump head and efficiency both decrease. The center of the radial force on the principal axis is located at the coordinate origin when the tip clearance is symmetrical, and moves to the third quadrant when the tip cleara...
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Introduction Reduction of a radial head subluxation is a gratifying procedure for both clinicians and parents. With a simple maneuver, a child can be restored to full function in minutes, without the need for costly or time-consuming studies. Radial head subluxation also is referred to as nursemaid’s elbow, pulled elbow, or annular ligament displacement. Clinicians working in the office, urgent...
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ژورنال
عنوان ژورنال: Transactions of the Japan Society of Mechanical Engineers
سال: 1952
ISSN: 0029-0270,2185-9485
DOI: 10.1299/kikai1938.18.66_163