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Simulation work is now commonly done before a propeller is fabricated. Ifan integrated software tool can inelude analysis, design, fabrication geometry and simulation, the design process will be much more convenient for developers. In this thesis, the author is expanding an open source propeller design code to OpenPVL_SW code that is combined with SolidWork software, to analyze, design and fabricate propellers, and also to see how the propeller design can be simulated. A case study ofan autonomous underwater vehiele CAVV) propeller completed by thc OpenPVL_SW code will be presented in this thesis. In this case, the OpenPVL_SW code is used to create an AUV propeller and generate data for propeller geometry and simulation. Second case study used CosmosFloworks to simulate the thrust of the propeller where the geometry was provided by Oceanic Consulting Corporation. Compared with the real testing result of the thrust, this case study is used to prove that CosmosFloworks can provide a reasonable thrust prediction. Aftcr the thrust simulation, CosmosWorks is used to check the strength of the propeller deisgn using Finite Element Analysis (FEA). Ifthe strength result is suitable, then the propeller geometry is ready to be fabricated; ifthe strength result is not desired, engineers can use higher strength material or redcsign the propeller geometry to increase strcngth.
Chapter 2 Literature and Software Review This chapler will review the literature conccming propeller design methods, rcecnt propeller design codes, Computcr·Aidcd Design (CAD) and Computer-Aided Manufacturing (CAM) for propellers and also provide a review ofOpcnPVL. 2.1 Review of Propeller Design 1cthods The development of propeller design methods has evolved for a long time. When propellers were first used for propulsion, very few people knew how propellers operated and the optimal way to design them. Early designs were following the sleps: trial, error and imagination. Momentum theory was applied to propellers in the late nineteenth century. It explained the resulting thrust ofpropellers, but it did not give a detailed reason for these results [1]. Design for blade strength was based on experience and then later on simple beam theory to dctcnnine the minimum root thickness and thickness distribution along the blade span. owadays, finite clement analysis is commonly used to analr-I:e propeller blades in details to ensure structural soundness.
Page 4: A Rapid Development Process for Mar
Page 7 and 8: Table of Contents Abstract ... Ackn
Page 9: List ofTables Table I: Required Inp
Page 12 and 13: Figure 46: Surface Dynamic Pressure
Page 14 and 15: a long time to analyze, draw, fabri
Page 18 and 19: Early theoretical analysis applied
Page 20 and 21: ------------------------- provides
Page 22 and 23: As can be secn in Table I, the lift
Page 24 and 25: propeller geometry has to be entere
Page 27: avoid cavitation; however, it decre
Page 31: l" ........... ,... __ .... :l ,,_
Page 34: Table 2: Advantages and Disadvantag
Page 41 and 42: trend for many companies to reduce
Page 43 and 44: fluxes through a particular control
Page 45 and 46: known as a casting, is usually ejec
Page 47 and 48: Table 3: Prototyping Technology Mat
Page 49: quite accuratc for a testing level.
Page 54 and 55: For given values ofJ, Fn, Rn, En, t
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Page 59 and 60: Using OpenPVL_SW I a propeller desi
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3.3 Simulations using CosmosFloWork
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simulation domain are set to 6m and
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CosmosWorks can be used to check th
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Figure 33: Dynamic Pressure Distrib
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Chapter 4 Case Study: Simulation of
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The plots of RPM and thrust from ou
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Figure 46: Surface Dynamic Pressure
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Figure 48: Deflection ofthe AUV Pro
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In this simulation, two nose cones
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Chapter 6 Propeller Fabrication by
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Figure 60: Stratasys rDM 2000 After
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Material options for Stratasys Fusi
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Chapter 7 Conclusions and Future Wo
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References III Burtner, E., 1953, "
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[20] D'Epagnier, P.K., 2005, "A Com
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Appendix 1\: The Part ofOpcnPVL_SW
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Create all of the function commands
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Appendix B: SolidWorks Macro lor th
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'create loft swModcl.ClearSelcction
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