Use this URL to cite or link to this record in EThOS: https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.427353
Title: Propeller tip vortex simulation using adaptive grid refinement based on flow feature identification
Author: Pashias, Christos
ISNI:       0000 0001 3475 0027
Awarding Body: University of Southampton
Current Institution: University of Southampton
Date of Award: 2005
Availability of Full Text:
Access from EThOS:
Full text unavailable from EThOS. Please try the link below.
Access from Institution:
Abstract:
In this thesis a novel 2-D vortex identification scheme is refined and extended to 3-D. The developed method is applied to a 3-D wing and two marine propellers; DTMB P4119 and INSEAN E779A. In addition a wake identification scheme is developed and applied to a 3-D wing. The vortex identification method is based on a simple mathematical scheme applied on 2-D planes. The vortex is identified by locating the point closest to the most variance in the velocity direction. The method is extended to 3-D by the use of a series of planes. Multiple cortices can be identified using this method. The cortex and wake identification schemes have been applied in conjunction with adaptive grid refinement on a 3-D wing showing improved agreement with experimental results. The vortex dependency on grid size has been demonstrated. The vortex identification scheme has been extended such that it can identify complex vortex core lines, typical of marine propellers and the results compared to experiments. An improved agreement has been demonstrated for the grid adapted cases.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID: uk.bl.ethos.427353  DOI: Not available
Share: