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Turbulent skin-friction drag reduction on Superhydrophobic ( SHPo ) surfaces

Group meeting report. Turbulent skin-friction drag reduction on Superhydrophobic ( SHPo ) surfaces. Hyungmin Park Advisor: Prof. CJ Kim 28 th September, 2012. Drag reduction flow tests. Finished analyzing all data

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Turbulent skin-friction drag reduction on Superhydrophobic ( SHPo ) surfaces

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  1. Group meeting report Turbulent skin-friction drag reduction on Superhydrophobic (SHPo) surfaces Hyungmin Park Advisor: Prof. CJ Kim 28th September, 2012

  2. Drag reduction flow tests • Finished analyzing all data • Working on journal manuscript – now at the last subsection of the discussion. • Presentation material (for Prof. John Kim) and Muchen’s NSF proposal

  3. DR vs GF ●, Present (50m-pitch, BDLY FLOW, Re~250) ■, Present (100m-pitch, BDLY FLOW, Re~250) ▲, Danielloet al. 2009 (60m-pitch, CH. FLOW (One SHPo wall), Re~180, PIV) △, Danielloet al. 2009 (60m-pitch, CH. FLOW (Two SHPo walls), Re~180, PD) ▽, Danielloet al. 2009 (120m-pitch, CH. FLOW (Two SHPo walls), Re~180, PD) ◆, Woolfordet al. 2009 (40m-pitch, CH. FLOW (One SHPo wall), Re~100, PIV) DR GF

  4. rms displacement fluctuations (d’) vs GF ●, 50m-pitch ■, 100m-pitch GF

  5. Next • Finish the first round of manuscript draft. • Teach Muchen about DR project related stuff.

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