Stratford

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The Experts below are selected from a list of 279 Experts worldwide ranked by ideXlab platform

Sunango Holidays - One of the best experts on this subject based on the ideXlab platform.

Ron F Blackwelder - One of the best experts on this subject based on the ideXlab platform.

  • whole field velocity measurements around an axisymmetric body with a Stratford smith pressure recovery
    Journal of Fluid Mechanics, 2002
    Co-Authors: Mustapha Hammache, F K Browand, Ron F Blackwelder
    Abstract:

    Wind tunnel experiments are performed on a body of revolution with aft-section designed to be an axisymmetric Stratford ramp (i.e. the flow over the 'ramp' experiences an adverse pressure gradient that causes it to be continuously on the verge of separation). Digital particle image velocimetry (DPIV) measurements over the ramp reveal a thick boundary layer that is characterized by self-similar velocity profiles with a large wake component and organized vorticity structures. The mean skin friction quickly drops to a value near zero. The sensitivity of the boundary layer to the degree of severity of the adverse pressure gradient is investigated by testing two additional ramps; one is slightly more conservative (i.e. less steep) than the Stratford ramp while the other is slightly more radical (i.e. steeper). In comparison to the Stratford ramp, the conservative ramp is characterized by a thinner boundary layer, with velocity profiles that start attached and gradually develop a large wake component, a much more gradual drop in the skin friction, and vorticity that is concentrated very close to the wall. On the other hand, the boundary layer over the radical ramp is unsteady and separates intermittently

Jamie Cookson - One of the best experts on this subject based on the ideXlab platform.

Mustapha Hammache - One of the best experts on this subject based on the ideXlab platform.

  • whole field velocity measurements around an axisymmetric body with a Stratford smith pressure recovery
    Journal of Fluid Mechanics, 2002
    Co-Authors: Mustapha Hammache, F K Browand, Ron F Blackwelder
    Abstract:

    Wind tunnel experiments are performed on a body of revolution with aft-section designed to be an axisymmetric Stratford ramp (i.e. the flow over the 'ramp' experiences an adverse pressure gradient that causes it to be continuously on the verge of separation). Digital particle image velocimetry (DPIV) measurements over the ramp reveal a thick boundary layer that is characterized by self-similar velocity profiles with a large wake component and organized vorticity structures. The mean skin friction quickly drops to a value near zero. The sensitivity of the boundary layer to the degree of severity of the adverse pressure gradient is investigated by testing two additional ramps; one is slightly more conservative (i.e. less steep) than the Stratford ramp while the other is slightly more radical (i.e. steeper). In comparison to the Stratford ramp, the conservative ramp is characterized by a thinner boundary layer, with velocity profiles that start attached and gradually develop a large wake component, a much more gradual drop in the skin friction, and vorticity that is concentrated very close to the wall. On the other hand, the boundary layer over the radical ramp is unsteady and separates intermittently

Hrs Locksmiths - One of the best experts on this subject based on the ideXlab platform.