Journal article
Computational fluid dynamics of four-quadrant marine-propulsor flow
Journal of ship research, Vol.43(4), pp.218-228
1999
DOI: 10.5957/jsr.1999.43.4.218
Abstract
Computational fluid dynamics results are presented of four-quadrant flow for marine-propulsor P4381. The solution method is unsteady three-dimensional incompressible Reynolds-averaged Navier-Stokes equations in generalized coordinates with the Baldwin-Lomax turbulence model. The method was used previously for the design condition for marine-propulsor P4119, including detailed verification and validation. Only limited verification is performed for P4381. The validation is limited by the availability of four-quadrant performance data and ring vortex visualizations for the crashback conditions. The predicted performance shows close agreement with the data for the forward and backing conditions, whereas for the crashahead and crashback conditions the agreement is only qualitative and requires an ad hoc cavitation correction. Also, the predicted ring vortices for the crashback conditions are in qualitative agreement with the data. Extensive calculations enable detailed description of flow characteristics over a broad range of propulsor four-quadrant operations, including surface pressure and streamlines, velocity distributions, boundary layer and wake, separation, and tip and ring vortices. The overall results suggest promise for Reynolds-averaged Navier-Stokes methods for simulating marine-propulsor flow, including offdesign. However, important outstanding issues include additional verification and validation, time-accurate solutions, and resolution and turbulence modeling for separation and tip and ring vortices.
Details
- Title: Subtitle
- Computational fluid dynamics of four-quadrant marine-propulsor flow
- Creators
- BIN Chen - University of IowaF Stern - University of Iowa
- Resource Type
- Journal article
- Publication Details
- Journal of ship research, Vol.43(4), pp.218-228
- Publisher
- Society of Naval Architects and Marine Engineers
- DOI
- 10.5957/jsr.1999.43.4.218
- ISSN
- 0022-4502
- eISSN
- 1542-0604
- Language
- English
- Date published
- 1999
- Academic Unit
- Mechanical Engineering
- Record Identifier
- 9984201441602771
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