Sensitivity Solution of Off-Design Conditions in Centrifugal Pump

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dc.contributor.authorSharma, Sunil
dc.date.accessioned2023-12-19T07:03:42Z
dc.date.available2023-12-19T07:03:42Z
dc.date.issued2023-11
dc.descriptionWhen sensitivity simulation method is tested for defect depth in impeller blade, solution is obtained in one-tenth time compared to baseline simulation for up to 60% increase in defect depth. In case of speed and flow rate deviation, sensitivity simulation time is increasing as deviation from base case is increasing while for defect depth, the sensitivity simulation time do not change significantly for depth changes testeden_US
dc.description.abstractCentrifugal pumps are most widely used pumps in industry and household usage for fluid flow. During usage of pump, pump speed and discharge may need to be varied. Also during continuous usage of pump, different physical defects may arise. These conditions would create off-design conditions in pump which are studied in this paper. The paper outlines a technique for efficiently obtaining the numerical solution of a pump operating in off-design conditions by leveraging the solution obtained under design conditions. This method is referred to as a “sensitivity solution”, wherein small parameter adjustments are made, and simulations are conducted starting from an already converged solution. Test was done for change in impeller speed and it was found that for one percentage change, sensitivity solution was obtained in one-fourth time compared to its baseline simulation. For the flow rate variation, for two percentage change, sensitivity solution is obtained in one-fifth time. Results support use of sensitivity method for solving flows for variations up to ten percent. Variation in output parameter is seen to be higher in case of speed changes compared to the flow rate.en_US
dc.identifier.urihttps://hdl.handle.net/20.500.14540/21033
dc.language.isoenen_US
dc.publisherI.O.E. Pulchowk Campusen_US
dc.subjectSensitivity Solution,en_US
dc.subjectOff-Design Conditions,en_US
dc.subjectCentrifugal Pumpen_US
dc.titleSensitivity Solution of Off-Design Conditions in Centrifugal Pumpen_US
dc.typeThesisen_US
local.academic.levelMastersen_US
local.affiliatedinstitute.titlePulchowk Campusen_US
local.institute.titleInstitute of Engineeringen_US
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