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Dive into the research topics where Richard Truesdell is active.

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Featured researches published by Richard Truesdell.


Physics of Fluids | 2005

Effective slip on textured superhydrophobic surfaces

Salil Gogte; Peter Vorobieff; Richard Truesdell; Andrea Mammoli; Frank van Swol; Pratik B. Shah; C. Jeffrey Brinker

We study fluid flow in the vicinity of textured and superhydrophobically coated surfaces with characteristic texture sizes on the order of 10μm. Both for droplets moving down an inclined surface and for an external flow near the surface (hydrofoil), there is evidence of appreciable drag reduction in the presence of surface texture combined with superhydrophobic coating. On textured inclined surfaces, the drops roll faster than on a coated untextured surface at the same angle. The highest drop velocities are achieved on surfaces with irregular textures with characteristic feature size ∼8μm. Application of the same texture and coating to the surface of a hydrofoil in a water tunnel results in drag reduction on the order of 10% or higher. This behavior is explained by the reduction of the contact area between the surface and the fluid, which can be interpreted in terms of changing the macroscopic boundary condition to allow nonzero slip velocity.


MULTISCALE AND FUNCTIONALLY GRADED MATERIALS 2006: (M&FGM 2006) | 2008

Shear Flow on Super‐Hydrophobic Surfaces

Sivakumar R. Challa; Richard Truesdell; Peter Vorobieff; Andrea Mammoli; Frank van Swol

Super‐hydrophobic surfaces, which exhibit large contact angles, can give rise to slip flow of aqueous fluids. We present our work on shear flow of atomistic fluids over simple super‐hydrophobic surfaces. Molecular dynamic simulations are employed to investigate the flow field of fluid between two parallel surfaces, one of which is moving. Exploring a range of fluid thermodynamic state points, we demonstrate the influence of fluid phase and structure near the surfaces on prevalence, and degree, of slip at the super‐hydrophobic surface.


Physical Review Letters | 2006

Drag Reduction on a Patterned Superhydrophobic Surface

Richard Truesdell; Andrea Mammoli; Peter Vorobieff; Frank van Swol; C. Jeffrey Brinker


Physical Review E | 2003

Mixing of a continuous flow of two fluids due to unsteady flow.

Richard Truesdell; Peter Vorobieff; Larry A. Sklar; Andrea Mammoli


Experiments in Fluids | 2005

Direct measurement of mixing quality in a pulsatile flow micromixer

Richard Truesdell; J. W. Bartsch; Tione Buranda; Larry A. Sklar; Andrea Mammoli


Archive | 2003

Wavy interface mixer

Larry A. Sklar; Andrea Mammoli; Richard Truesdell; Peter Vorobieff


publisher | None

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Proposed for publication in the International Journal for Multiscale Computational Engineering. | 2007

Shear flow on super-hydrophobic surfaces.

Frank van Swol; Richard Truesdell; Peter Vorobieff; Sivakumar R. Challa; Andrea Mammoli


Bulletin of the American Physical Society | 2005

Modification of no-slip boundary condition by superhydrophobic wall patterning

Richard Truesdell; Andrea Mammoli; Peter Vorobieff; Frank van Swol


Archive | 2004

Drag reduction in external flows using superhydrophobic patterned surfaces

Salil Gogte; Richard Truesdell; Andrea Mammoli

Collaboration


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Andrea Mammoli

University of New Mexico

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Frank van Swol

Sandia National Laboratories

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Larry A. Sklar

University of New Mexico

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C. Jeffrey Brinker

Sandia National Laboratories

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Salil Gogte

University of New Mexico

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J. W. Bartsch

University of New Mexico

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Pratik B. Shah

University of New Mexico

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Tione Buranda

University of New Mexico

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