<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>The paper provides simulation results for SUP (Stand Up Paddle) board appendage resistance. Additional propulsion is added to the SUP board. It is equipped with a waterjet. The waterjet is attached to the board rudder. This increases the drag coefficient for rudder five times. To reduce the drag variable, design options for the waterjet duct were proposed. The simulation tests were performed using SolidWorks Flow software using two types of simulations, namely, the pressure on the body and the flow around the body. The objective was to streamline the bluff duct of the waterjet and thus to create the appendage design with minimum drag force from fluid flow and possibly greater Inlet Velocity Ratio. Calculations showed that rounding-off the edges of waterjet duct resulted in 35 % of drag coefficient reduction, while further streamlining reduced it by additional 10 %.</p>
</abstract>

The paper provides simulation results for SUP (Stand Up Paddle) board appendage resistance. Additional propulsion is added to the SUP board. It is equipped with a waterjet. The waterjet is attached to the board rudder. This increases the drag coefficient for rudder five times. To reduce the drag variable, design options for the waterjet duct were proposed. The simulation tests were performed using SolidWorks Flow software using two types of simulations, namely, the pressure on the body and the flow around the body. The objective was to streamline the bluff duct of the waterjet and thus to create the appendage design with minimum drag force from fluid flow and possibly greater Inlet Velocity Ratio. Calculations showed that rounding-off the edges of waterjet duct resulted in 35 % of drag coefficient reduction, while further streamlining reduced it by additional 10 %.

Modelling of Drag Force Reduction for a Waterjet Propulsion System

Laboratory of Experimental Mechanics of Materials

Latvian Journal of Physics and Technical Sciences

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

{"article-title":"Modelling of Drag Force Reduction for a Waterjet Propulsion System"}

The paper provides simulation results for SUP (Stand Up Paddle) board appendage resistance. Additional propulsion is added to the SUP board. It is equipped...

Modelling of Drag Force Reduction for a Waterjet Propulsion System

Published Online: Oct 08, 2021

Page range: 3 - 14

DOI: https://doi.org/10.2478/lpts-2021-0035

Keywords
Drag coefficient, propulsion, resistance, SUP board, waterjet

© 2021 M. Cerpinska et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Modelling of Drag Force Reduction for a Waterjet Propulsion System

Published Online: Oct 08, 2021

Page range: 3 - 14

DOI: https://doi.org/10.2478/lpts-2021-0035

KeywordsDrag coefficient, propulsion, resistance, SUP board, waterjet

© 2021 M. Cerpinska et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Keywords
Drag coefficient, propulsion, resistance, SUP board, waterjet