International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395 -0056
Volume: 04 Issue: 05 | May -2017
p-ISSN: 2395-0072
www.irjet.net
CFD ANALYSIS OF CENTRIFUGAL PUMP IMPELLER HAVING DIFFERENT EXIT BLADE WIDTH, EXIT DIAMETER AND TRAILING EDGE BLADE ANGLE TO ENHANCE PERFORMANCE AmitKumar1, Prof. Kamal Kumar Jain2, Dr.R.KDave3, Asst. Prof. Anshul Choudhary4 student, SRIT, Jabalpur,(M.P)482002 Mechanical Dept., SRIT, Jabalpur, (M.P)482002 3Prof., Mechanical Dept. SRITJabalpur,(M.P)482002 4Asst. Prof., MechanicalDept. SRIT, Jabalpur,(M.P)482002 ---------------------------------------------------------------------***-----------------------------------------------------------------2H.O.D,
1P.G
Abstract-A computational fluid dynamics (CFD) three dimensional simulation is done to optimize the pressure head, efficiency and power required of centrifugal pump by changing in impeller exit blade width, exit diameter, trailing edge blade angle and at different RPM. In this study initially the geometry of centrifugal pump impeller is created in Ansys blade gen design modeler and further mesh in Ansys turbo grid meshing tool and finally CFD analysis done in Ansys CFX. From the analysis it is found that the performance of centrifugal pump changes significantly by changing the parameters discussed above. Following are the effects discussed below As the blade width at exit of the impeller increases the performance of centrifugal pump increases. As the exit diameter of the impeller decreases the performance of centrifugal pump increases. As the trailing edge blade angle of the impeller increases the performance of centrifugal pump increases. The results obtained from all these changing parameters a final optimized model is made and through which it is found that its increases the performance of centrifugal pump significantly
Keywords: Computational Fluid Dynamic (CFD), Bladegen Design Modeler, Ansys, Blade width, Trailing edge blade angle (β2).
1. INTRODUCTION Centrifugal pumps are the most common type of pump used in industry, agriculture, municipal (water and wastewater plants), power generation plants, petroleum and many other industries.
driven impeller that rotates (usually at 1750 or 3500 RPM) inside a casing. Liquid flows into the suction port (inlet) of the casing and is thrown to the outside of the casing and then exits the discharge port. The velocity imparted to the liquid by the impeller is converted to pressure energy or "head".
Fig1.1: Centrifugal Pump. Centrifugal pumps are unique because they can provide high or very high flow rates (much higher than most positive displacement pumps) and because their flow rate varies considerably with changes in the Total Dynamic Head (TDH) of the particular piping system. This allows the flow rate from centrifugal pumps to be "throttled" considerably with a simple valve placed into the discharge piping, without causing excessive pressure buildup in the piping or requiring a pressure relief valve. Therefore, centrifugal pumps can cover a very wide range of liquid pumping applications.
Centrifugal pumps are the primary pump type in the class of pumps called "kinetic" pumps and are distinctly different than "positive displacement" pumps shown in Fig1.1 All centrifugal pumps include a shaft© 2017, IRJET
|
Impact Factor value: 5.181
|
ISO 9001:2008 Certified Journal
|
Page 1231